/*!
 * Quill Editor v1.3.7
 * https://quilljs.com/
 * Copyright (c) 2014, Jason Chen
 * Copyright (c) 2013, salesforce.com
 */
(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
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		define([], factory);
	else if(typeof exports === 'object')
		exports["Quill"] = factory();
	else
		root["Quill"] = factory();
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/* 0 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
var container_1 = __webpack_require__(17);
var format_1 = __webpack_require__(18);
var leaf_1 = __webpack_require__(19);
var scroll_1 = __webpack_require__(45);
var inline_1 = __webpack_require__(46);
var block_1 = __webpack_require__(47);
var embed_1 = __webpack_require__(48);
var text_1 = __webpack_require__(49);
var attributor_1 = __webpack_require__(12);
var class_1 = __webpack_require__(32);
var style_1 = __webpack_require__(33);
var store_1 = __webpack_require__(31);
var Registry = __webpack_require__(1);
var Parchment = {
    Scope: Registry.Scope,
    create: Registry.create,
    find: Registry.find,
    query: Registry.query,
    register: Registry.register,
    Container: container_1.default,
    Format: format_1.default,
    Leaf: leaf_1.default,
    Embed: embed_1.default,
    Scroll: scroll_1.default,
    Block: block_1.default,
    Inline: inline_1.default,
    Text: text_1.default,
    Attributor: {
        Attribute: attributor_1.default,
        Class: class_1.default,
        Style: style_1.default,
        Store: store_1.default,
    },
};
exports.default = Parchment;


/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var ParchmentError = /** @class */ (function (_super) {
    __extends(ParchmentError, _super);
    function ParchmentError(message) {
        var _this = this;
        message = '[Parchment] ' + message;
        _this = _super.call(this, message) || this;
        _this.message = message;
        _this.name = _this.constructor.name;
        return _this;
    }
    return ParchmentError;
}(Error));
exports.ParchmentError = ParchmentError;
var attributes = {};
var classes = {};
var tags = {};
var types = {};
exports.DATA_KEY = '__blot';
var Scope;
(function (Scope) {
    Scope[Scope["TYPE"] = 3] = "TYPE";
    Scope[Scope["LEVEL"] = 12] = "LEVEL";
    Scope[Scope["ATTRIBUTE"] = 13] = "ATTRIBUTE";
    Scope[Scope["BLOT"] = 14] = "BLOT";
    Scope[Scope["INLINE"] = 7] = "INLINE";
    Scope[Scope["BLOCK"] = 11] = "BLOCK";
    Scope[Scope["BLOCK_BLOT"] = 10] = "BLOCK_BLOT";
    Scope[Scope["INLINE_BLOT"] = 6] = "INLINE_BLOT";
    Scope[Scope["BLOCK_ATTRIBUTE"] = 9] = "BLOCK_ATTRIBUTE";
    Scope[Scope["INLINE_ATTRIBUTE"] = 5] = "INLINE_ATTRIBUTE";
    Scope[Scope["ANY"] = 15] = "ANY";
})(Scope = exports.Scope || (exports.Scope = {}));
function create(input, value) {
    var match = query(input);
    if (match == null) {
        throw new ParchmentError("Unable to create " + input + " blot");
    }
    var BlotClass = match;
    var node = 
    // @ts-ignore
    input instanceof Node || input['nodeType'] === Node.TEXT_NODE ? input : BlotClass.create(value);
    return new BlotClass(node, value);
}
exports.create = create;
function find(node, bubble) {
    if (bubble === void 0) { bubble = false; }
    if (node == null)
        return null;
    // @ts-ignore
    if (node[exports.DATA_KEY] != null)
        return node[exports.DATA_KEY].blot;
    if (bubble)
        return find(node.parentNode, bubble);
    return null;
}
exports.find = find;
function query(query, scope) {
    if (scope === void 0) { scope = Scope.ANY; }
    var match;
    if (typeof query === 'string') {
        match = types[query] || attributes[query];
        // @ts-ignore
    }
    else if (query instanceof Text || query['nodeType'] === Node.TEXT_NODE) {
        match = types['text'];
    }
    else if (typeof query === 'number') {
        if (query & Scope.LEVEL & Scope.BLOCK) {
            match = types['block'];
        }
        else if (query & Scope.LEVEL & Scope.INLINE) {
            match = types['inline'];
        }
    }
    else if (query instanceof HTMLElement) {
        var names = (query.getAttribute('class') || '').split(/\s+/);
        for (var i in names) {
            match = classes[names[i]];
            if (match)
                break;
        }
        match = match || tags[query.tagName];
    }
    if (match == null)
        return null;
    // @ts-ignore
    if (scope & Scope.LEVEL & match.scope && scope & Scope.TYPE & match.scope)
        return match;
    return null;
}
exports.query = query;
function register() {
    var Definitions = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        Definitions[_i] = arguments[_i];
    }
    if (Definitions.length > 1) {
        return Definitions.map(function (d) {
            return register(d);
        });
    }
    var Definition = Definitions[0];
    if (typeof Definition.blotName !== 'string' && typeof Definition.attrName !== 'string') {
        throw new ParchmentError('Invalid definition');
    }
    else if (Definition.blotName === 'abstract') {
        throw new ParchmentError('Cannot register abstract class');
    }
    types[Definition.blotName || Definition.attrName] = Definition;
    if (typeof Definition.keyName === 'string') {
        attributes[Definition.keyName] = Definition;
    }
    else {
        if (Definition.className != null) {
            classes[Definition.className] = Definition;
        }
        if (Definition.tagName != null) {
            if (Array.isArray(Definition.tagName)) {
                Definition.tagName = Definition.tagName.map(function (tagName) {
                    return tagName.toUpperCase();
                });
            }
            else {
                Definition.tagName = Definition.tagName.toUpperCase();
            }
            var tagNames = Array.isArray(Definition.tagName) ? Definition.tagName : [Definition.tagName];
            tagNames.forEach(function (tag) {
                if (tags[tag] == null || Definition.className == null) {
                    tags[tag] = Definition;
                }
            });
        }
    }
    return Definition;
}
exports.register = register;


/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {

var diff = __webpack_require__(51);
var equal = __webpack_require__(11);
var extend = __webpack_require__(3);
var op = __webpack_require__(20);


var NULL_CHARACTER = String.fromCharCode(0);  // Placeholder char for embed in diff()


var Delta = function (ops) {
  // Assume we are given a well formed ops
  if (Array.isArray(ops)) {
    this.ops = ops;
  } else if (ops != null && Array.isArray(ops.ops)) {
    this.ops = ops.ops;
  } else {
    this.ops = [];
  }
};


Delta.prototype.insert = function (text, attributes) {
  var newOp = {};
  if (text.length === 0) return this;
  newOp.insert = text;
  if (attributes != null && typeof attributes === 'object' && Object.keys(attributes).length > 0) {
    newOp.attributes = attributes;
  }
  return this.push(newOp);
};

Delta.prototype['delete'] = function (length) {
  if (length <= 0) return this;
  return this.push({ 'delete': length });
};

Delta.prototype.retain = function (length, attributes) {
  if (length <= 0) return this;
  var newOp = { retain: length };
  if (attributes != null && typeof attributes === 'object' && Object.keys(attributes).length > 0) {
    newOp.attributes = attributes;
  }
  return this.push(newOp);
};

Delta.prototype.push = function (newOp) {
  var index = this.ops.length;
  var lastOp = this.ops[index - 1];
  newOp = extend(true, {}, newOp);
  if (typeof lastOp === 'object') {
    if (typeof newOp['delete'] === 'number' && typeof lastOp['delete'] === 'number') {
      this.ops[index - 1] = { 'delete': lastOp['delete'] + newOp['delete'] };
      return this;
    }
    // Since it does not matter if we insert before or after deleting at the same index,
    // always prefer to insert first
    if (typeof lastOp['delete'] === 'number' && newOp.insert != null) {
      index -= 1;
      lastOp = this.ops[index - 1];
      if (typeof lastOp !== 'object') {
        this.ops.unshift(newOp);
        return this;
      }
    }
    if (equal(newOp.attributes, lastOp.attributes)) {
      if (typeof newOp.insert === 'string' && typeof lastOp.insert === 'string') {
        this.ops[index - 1] = { insert: lastOp.insert + newOp.insert };
        if (typeof newOp.attributes === 'object') this.ops[index - 1].attributes = newOp.attributes
        return this;
      } else if (typeof newOp.retain === 'number' && typeof lastOp.retain === 'number') {
        this.ops[index - 1] = { retain: lastOp.retain + newOp.retain };
        if (typeof newOp.attributes === 'object') this.ops[index - 1].attributes = newOp.attributes
        return this;
      }
    }
  }
  if (index === this.ops.length) {
    this.ops.push(newOp);
  } else {
    this.ops.splice(index, 0, newOp);
  }
  return this;
};

Delta.prototype.chop = function () {
  var lastOp = this.ops[this.ops.length - 1];
  if (lastOp && lastOp.retain && !lastOp.attributes) {
    this.ops.pop();
  }
  return this;
};

Delta.prototype.filter = function (predicate) {
  return this.ops.filter(predicate);
};

Delta.prototype.forEach = function (predicate) {
  this.ops.forEach(predicate);
};

Delta.prototype.map = function (predicate) {
  return this.ops.map(predicate);
};

Delta.prototype.partition = function (predicate) {
  var passed = [], failed = [];
  this.forEach(function(op) {
    var target = predicate(op) ? passed : failed;
    target.push(op);
  });
  return [passed, failed];
};

Delta.prototype.reduce = function (predicate, initial) {
  return this.ops.reduce(predicate, initial);
};

Delta.prototype.changeLength = function () {
  return this.reduce(function (length, elem) {
    if (elem.insert) {
      return length + op.length(elem);
    } else if (elem.delete) {
      return length - elem.delete;
    }
    return length;
  }, 0);
};

Delta.prototype.length = function () {
  return this.reduce(function (length, elem) {
    return length + op.length(elem);
  }, 0);
};

Delta.prototype.slice = function (start, end) {
  start = start || 0;
  if (typeof end !== 'number') end = Infinity;
  var ops = [];
  var iter = op.iterator(this.ops);
  var index = 0;
  while (index < end && iter.hasNext()) {
    var nextOp;
    if (index < start) {
      nextOp = iter.next(start - index);
    } else {
      nextOp = iter.next(end - index);
      ops.push(nextOp);
    }
    index += op.length(nextOp);
  }
  return new Delta(ops);
};


Delta.prototype.compose = function (other) {
  var thisIter = op.iterator(this.ops);
  var otherIter = op.iterator(other.ops);
  var ops = [];
  var firstOther = otherIter.peek();
  if (firstOther != null && typeof firstOther.retain === 'number' && firstOther.attributes == null) {
    var firstLeft = firstOther.retain;
    while (thisIter.peekType() === 'insert' && thisIter.peekLength() <= firstLeft) {
      firstLeft -= thisIter.peekLength();
      ops.push(thisIter.next());
    }
    if (firstOther.retain - firstLeft > 0) {
      otherIter.next(firstOther.retain - firstLeft);
    }
  }
  var delta = new Delta(ops);
  while (thisIter.hasNext() || otherIter.hasNext()) {
    if (otherIter.peekType() === 'insert') {
      delta.push(otherIter.next());
    } else if (thisIter.peekType() === 'delete') {
      delta.push(thisIter.next());
    } else {
      var length = Math.min(thisIter.peekLength(), otherIter.peekLength());
      var thisOp = thisIter.next(length);
      var otherOp = otherIter.next(length);
      if (typeof otherOp.retain === 'number') {
        var newOp = {};
        if (typeof thisOp.retain === 'number') {
          newOp.retain = length;
        } else {
          newOp.insert = thisOp.insert;
        }
        // Preserve null when composing with a retain, otherwise remove it for inserts
        var attributes = op.attributes.compose(thisOp.attributes, otherOp.attributes, typeof thisOp.retain === 'number');
        if (attributes) newOp.attributes = attributes;
        delta.push(newOp);

        // Optimization if rest of other is just retain
        if (!otherIter.hasNext() && equal(delta.ops[delta.ops.length - 1], newOp)) {
          var rest = new Delta(thisIter.rest());
          return delta.concat(rest).chop();
        }

      // Other op should be delete, we could be an insert or retain
      // Insert + delete cancels out
      } else if (typeof otherOp['delete'] === 'number' && typeof thisOp.retain === 'number') {
        delta.push(otherOp);
      }
    }
  }
  return delta.chop();
};

Delta.prototype.concat = function (other) {
  var delta = new Delta(this.ops.slice());
  if (other.ops.length > 0) {
    delta.push(other.ops[0]);
    delta.ops = delta.ops.concat(other.ops.slice(1));
  }
  return delta;
};

Delta.prototype.diff = function (other, index) {
  if (this.ops === other.ops) {
    return new Delta();
  }
  var strings = [this, other].map(function (delta) {
    return delta.map(function (op) {
      if (op.insert != null) {
        return typeof op.insert === 'string' ? op.insert : NULL_CHARACTER;
      }
      var prep = (delta === other) ? 'on' : 'with';
      throw new Error('diff() called ' + prep + ' non-document');
    }).join('');
  });
  var delta = new Delta();
  var diffResult = diff(strings[0], strings[1], index);
  var thisIter = op.iterator(this.ops);
  var otherIter = op.iterator(other.ops);
  diffResult.forEach(function (component) {
    var length = component[1].length;
    while (length > 0) {
      var opLength = 0;
      switch (component[0]) {
        case diff.INSERT:
          opLength = Math.min(otherIter.peekLength(), length);
          delta.push(otherIter.next(opLength));
          break;
        case diff.DELETE:
          opLength = Math.min(length, thisIter.peekLength());
          thisIter.next(opLength);
          delta['delete'](opLength);
          break;
        case diff.EQUAL:
          opLength = Math.min(thisIter.peekLength(), otherIter.peekLength(), length);
          var thisOp = thisIter.next(opLength);
          var otherOp = otherIter.next(opLength);
          if (equal(thisOp.insert, otherOp.insert)) {
            delta.retain(opLength, op.attributes.diff(thisOp.attributes, otherOp.attributes));
          } else {
            delta.push(otherOp)['delete'](opLength);
          }
          break;
      }
      length -= opLength;
    }
  });
  return delta.chop();
};

Delta.prototype.eachLine = function (predicate, newline) {
  newline = newline || '\n';
  var iter = op.iterator(this.ops);
  var line = new Delta();
  var i = 0;
  while (iter.hasNext()) {
    if (iter.peekType() !== 'insert') return;
    var thisOp = iter.peek();
    var start = op.length(thisOp) - iter.peekLength();
    var index = typeof thisOp.insert === 'string' ?
      thisOp.insert.indexOf(newline, start) - start : -1;
    if (index < 0) {
      line.push(iter.next());
    } else if (index > 0) {
      line.push(iter.next(index));
    } else {
      if (predicate(line, iter.next(1).attributes || {}, i) === false) {
        return;
      }
      i += 1;
      line = new Delta();
    }
  }
  if (line.length() > 0) {
    predicate(line, {}, i);
  }
};

Delta.prototype.transform = function (other, priority) {
  priority = !!priority;
  if (typeof other === 'number') {
    return this.transformPosition(other, priority);
  }
  var thisIter = op.iterator(this.ops);
  var otherIter = op.iterator(other.ops);
  var delta = new Delta();
  while (thisIter.hasNext() || otherIter.hasNext()) {
    if (thisIter.peekType() === 'insert' && (priority || otherIter.peekType() !== 'insert')) {
      delta.retain(op.length(thisIter.next()));
    } else if (otherIter.peekType() === 'insert') {
      delta.push(otherIter.next());
    } else {
      var length = Math.min(thisIter.peekLength(), otherIter.peekLength());
      var thisOp = thisIter.next(length);
      var otherOp = otherIter.next(length);
      if (thisOp['delete']) {
        // Our delete either makes their delete redundant or removes their retain
        continue;
      } else if (otherOp['delete']) {
        delta.push(otherOp);
      } else {
        // We retain either their retain or insert
        delta.retain(length, op.attributes.transform(thisOp.attributes, otherOp.attributes, priority));
      }
    }
  }
  return delta.chop();
};

Delta.prototype.transformPosition = function (index, priority) {
  priority = !!priority;
  var thisIter = op.iterator(this.ops);
  var offset = 0;
  while (thisIter.hasNext() && offset <= index) {
    var length = thisIter.peekLength();
    var nextType = thisIter.peekType();
    thisIter.next();
    if (nextType === 'delete') {
      index -= Math.min(length, index - offset);
      continue;
    } else if (nextType === 'insert' && (offset < index || !priority)) {
      index += length;
    }
    offset += length;
  }
  return index;
};


module.exports = Delta;


/***/ }),
/* 3 */
/***/ (function(module, exports) {

'use strict';

var hasOwn = Object.prototype.hasOwnProperty;
var toStr = Object.prototype.toString;
var defineProperty = Object.defineProperty;
var gOPD = Object.getOwnPropertyDescriptor;

var isArray = function isArray(arr) {
	if (typeof Array.isArray === 'function') {
		return Array.isArray(arr);
	}

	return toStr.call(arr) === '[object Array]';
};

var isPlainObject = function isPlainObject(obj) {
	if (!obj || toStr.call(obj) !== '[object Object]') {
		return false;
	}

	var hasOwnConstructor = hasOwn.call(obj, 'constructor');
	var hasIsPrototypeOf = obj.constructor && obj.constructor.prototype && hasOwn.call(obj.constructor.prototype, 'isPrototypeOf');
	// Not own constructor property must be Object
	if (obj.constructor && !hasOwnConstructor && !hasIsPrototypeOf) {
		return false;
	}

	// Own properties are enumerated firstly, so to speed up,
	// if last one is own, then all properties are own.
	var key;
	for (key in obj) { /**/ }

	return typeof key === 'undefined' || hasOwn.call(obj, key);
};

// If name is '__proto__', and Object.defineProperty is available, define __proto__ as an own property on target
var setProperty = function setProperty(target, options) {
	if (defineProperty && options.name === '__proto__') {
		defineProperty(target, options.name, {
			enumerable: true,
			configurable: true,
			value: options.newValue,
			writable: true
		});
	} else {
		target[options.name] = options.newValue;
	}
};

// Return undefined instead of __proto__ if '__proto__' is not an own property
var getProperty = function getProperty(obj, name) {
	if (name === '__proto__') {
		if (!hasOwn.call(obj, name)) {
			return void 0;
		} else if (gOPD) {
			// In early versions of node, obj['__proto__'] is buggy when obj has
			// __proto__ as an own property. Object.getOwnPropertyDescriptor() works.
			return gOPD(obj, name).value;
		}
	}

	return obj[name];
};

module.exports = function extend() {
	var options, name, src, copy, copyIsArray, clone;
	var target = arguments[0];
	var i = 1;
	var length = arguments.length;
	var deep = false;

	// Handle a deep copy situation
	if (typeof target === 'boolean') {
		deep = target;
		target = arguments[1] || {};
		// skip the boolean and the target
		i = 2;
	}
	if (target == null || (typeof target !== 'object' && typeof target !== 'function')) {
		target = {};
	}

	for (; i < length; ++i) {
		options = arguments[i];
		// Only deal with non-null/undefined values
		if (options != null) {
			// Extend the base object
			for (name in options) {
				src = getProperty(target, name);
				copy = getProperty(options, name);

				// Prevent never-ending loop
				if (target !== copy) {
					// Recurse if we're merging plain objects or arrays
					if (deep && copy && (isPlainObject(copy) || (copyIsArray = isArray(copy)))) {
						if (copyIsArray) {
							copyIsArray = false;
							clone = src && isArray(src) ? src : [];
						} else {
							clone = src && isPlainObject(src) ? src : {};
						}

						// Never move original objects, clone them
						setProperty(target, { name: name, newValue: extend(deep, clone, copy) });

					// Don't bring in undefined values
					} else if (typeof copy !== 'undefined') {
						setProperty(target, { name: name, newValue: copy });
					}
				}
			}
		}
	}

	// Return the modified object
	return target;
};


/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.BlockEmbed = exports.bubbleFormats = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _extend = __webpack_require__(3);

var _extend2 = _interopRequireDefault(_extend);

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _break = __webpack_require__(16);

var _break2 = _interopRequireDefault(_break);

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

var _text = __webpack_require__(7);

var _text2 = _interopRequireDefault(_text);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var NEWLINE_LENGTH = 1;

var BlockEmbed = function (_Parchment$Embed) {
  _inherits(BlockEmbed, _Parchment$Embed);

  function BlockEmbed() {
    _classCallCheck(this, BlockEmbed);

    return _possibleConstructorReturn(this, (BlockEmbed.__proto__ || Object.getPrototypeOf(BlockEmbed)).apply(this, arguments));
  }

  _createClass(BlockEmbed, [{
    key: 'attach',
    value: function attach() {
      _get(BlockEmbed.prototype.__proto__ || Object.getPrototypeOf(BlockEmbed.prototype), 'attach', this).call(this);
      this.attributes = new _parchment2.default.Attributor.Store(this.domNode);
    }
  }, {
    key: 'delta',
    value: function delta() {
      return new _quillDelta2.default().insert(this.value(), (0, _extend2.default)(this.formats(), this.attributes.values()));
    }
  }, {
    key: 'format',
    value: function format(name, value) {
      var attribute = _parchment2.default.query(name, _parchment2.default.Scope.BLOCK_ATTRIBUTE);
      if (attribute != null) {
        this.attributes.attribute(attribute, value);
      }
    }
  }, {
    key: 'formatAt',
    value: function formatAt(index, length, name, value) {
      this.format(name, value);
    }
  }, {
    key: 'insertAt',
    value: function insertAt(index, value, def) {
      if (typeof value === 'string' && value.endsWith('\n')) {
        var block = _parchment2.default.create(Block.blotName);
        this.parent.insertBefore(block, index === 0 ? this : this.next);
        block.insertAt(0, value.slice(0, -1));
      } else {
        _get(BlockEmbed.prototype.__proto__ || Object.getPrototypeOf(BlockEmbed.prototype), 'insertAt', this).call(this, index, value, def);
      }
    }
  }]);

  return BlockEmbed;
}(_parchment2.default.Embed);

BlockEmbed.scope = _parchment2.default.Scope.BLOCK_BLOT;
// It is important for cursor behavior BlockEmbeds use tags that are block level elements


var Block = function (_Parchment$Block) {
  _inherits(Block, _Parchment$Block);

  function Block(domNode) {
    _classCallCheck(this, Block);

    var _this2 = _possibleConstructorReturn(this, (Block.__proto__ || Object.getPrototypeOf(Block)).call(this, domNode));

    _this2.cache = {};
    return _this2;
  }

  _createClass(Block, [{
    key: 'delta',
    value: function delta() {
      if (this.cache.delta == null) {
        this.cache.delta = this.descendants(_parchment2.default.Leaf).reduce(function (delta, leaf) {
          if (leaf.length() === 0) {
            return delta;
          } else {
            return delta.insert(leaf.value(), bubbleFormats(leaf));
          }
        }, new _quillDelta2.default()).insert('\n', bubbleFormats(this));
      }
      return this.cache.delta;
    }
  }, {
    key: 'deleteAt',
    value: function deleteAt(index, length) {
      _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'deleteAt', this).call(this, index, length);
      this.cache = {};
    }
  }, {
    key: 'formatAt',
    value: function formatAt(index, length, name, value) {
      if (length <= 0) return;
      if (_parchment2.default.query(name, _parchment2.default.Scope.BLOCK)) {
        if (index + length === this.length()) {
          this.format(name, value);
        }
      } else {
        _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'formatAt', this).call(this, index, Math.min(length, this.length() - index - 1), name, value);
      }
      this.cache = {};
    }
  }, {
    key: 'insertAt',
    value: function insertAt(index, value, def) {
      if (def != null) return _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'insertAt', this).call(this, index, value, def);
      if (value.length === 0) return;
      var lines = value.split('\n');
      var text = lines.shift();
      if (text.length > 0) {
        if (index < this.length() - 1 || this.children.tail == null) {
          _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'insertAt', this).call(this, Math.min(index, this.length() - 1), text);
        } else {
          this.children.tail.insertAt(this.children.tail.length(), text);
        }
        this.cache = {};
      }
      var block = this;
      lines.reduce(function (index, line) {
        block = block.split(index, true);
        block.insertAt(0, line);
        return line.length;
      }, index + text.length);
    }
  }, {
    key: 'insertBefore',
    value: function insertBefore(blot, ref) {
      var head = this.children.head;
      _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'insertBefore', this).call(this, blot, ref);
      if (head instanceof _break2.default) {
        head.remove();
      }
      this.cache = {};
    }
  }, {
    key: 'length',
    value: function length() {
      if (this.cache.length == null) {
        this.cache.length = _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'length', this).call(this) + NEWLINE_LENGTH;
      }
      return this.cache.length;
    }
  }, {
    key: 'moveChildren',
    value: function moveChildren(target, ref) {
      _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'moveChildren', this).call(this, target, ref);
      this.cache = {};
    }
  }, {
    key: 'optimize',
    value: function optimize(context) {
      _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'optimize', this).call(this, context);
      this.cache = {};
    }
  }, {
    key: 'path',
    value: function path(index) {
      return _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'path', this).call(this, index, true);
    }
  }, {
    key: 'removeChild',
    value: function removeChild(child) {
      _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'removeChild', this).call(this, child);
      this.cache = {};
    }
  }, {
    key: 'split',
    value: function split(index) {
      var force = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

      if (force && (index === 0 || index >= this.length() - NEWLINE_LENGTH)) {
        var clone = this.clone();
        if (index === 0) {
          this.parent.insertBefore(clone, this);
          return this;
        } else {
          this.parent.insertBefore(clone, this.next);
          return clone;
        }
      } else {
        var next = _get(Block.prototype.__proto__ || Object.getPrototypeOf(Block.prototype), 'split', this).call(this, index, force);
        this.cache = {};
        return next;
      }
    }
  }]);

  return Block;
}(_parchment2.default.Block);

Block.blotName = 'block';
Block.tagName = 'P';
Block.defaultChild = 'break';
Block.allowedChildren = [_inline2.default, _parchment2.default.Embed, _text2.default];

function bubbleFormats(blot) {
  var formats = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  if (blot == null) return formats;
  if (typeof blot.formats === 'function') {
    formats = (0, _extend2.default)(formats, blot.formats());
  }
  if (blot.parent == null || blot.parent.blotName == 'scroll' || blot.parent.statics.scope !== blot.statics.scope) {
    return formats;
  }
  return bubbleFormats(blot.parent, formats);
}

exports.bubbleFormats = bubbleFormats;
exports.BlockEmbed = BlockEmbed;
exports.default = Block;

/***/ }),
/* 5 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.overload = exports.expandConfig = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

__webpack_require__(50);

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _editor = __webpack_require__(14);

var _editor2 = _interopRequireDefault(_editor);

var _emitter3 = __webpack_require__(8);

var _emitter4 = _interopRequireDefault(_emitter3);

var _module = __webpack_require__(9);

var _module2 = _interopRequireDefault(_module);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _selection = __webpack_require__(15);

var _selection2 = _interopRequireDefault(_selection);

var _extend = __webpack_require__(3);

var _extend2 = _interopRequireDefault(_extend);

var _logger = __webpack_require__(10);

var _logger2 = _interopRequireDefault(_logger);

var _theme = __webpack_require__(34);

var _theme2 = _interopRequireDefault(_theme);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var debug = (0, _logger2.default)('quill');

var Quill = function () {
  _createClass(Quill, null, [{
    key: 'debug',
    value: function debug(limit) {
      if (limit === true) {
        limit = 'log';
      }
      _logger2.default.level(limit);
    }
  }, {
    key: 'find',
    value: function find(node) {
      return node.__quill || _parchment2.default.find(node);
    }
  }, {
    key: 'import',
    value: function _import(name) {
      if (this.imports[name] == null) {
        debug.error('Cannot import ' + name + '. Are you sure it was registered?');
      }
      return this.imports[name];
    }
  }, {
    key: 'register',
    value: function register(path, target) {
      var _this = this;

      var overwrite = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;

      if (typeof path !== 'string') {
        var name = path.attrName || path.blotName;
        if (typeof name === 'string') {
          // register(Blot | Attributor, overwrite)
          this.register('formats/' + name, path, target);
        } else {
          Object.keys(path).forEach(function (key) {
            _this.register(key, path[key], target);
          });
        }
      } else {
        if (this.imports[path] != null && !overwrite) {
          debug.warn('Overwriting ' + path + ' with', target);
        }
        this.imports[path] = target;
        if ((path.startsWith('blots/') || path.startsWith('formats/')) && target.blotName !== 'abstract') {
          _parchment2.default.register(target);
        } else if (path.startsWith('modules') && typeof target.register === 'function') {
          target.register();
        }
      }
    }
  }]);

  function Quill(container) {
    var _this2 = this;

    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

    _classCallCheck(this, Quill);

    this.options = expandConfig(container, options);
    this.container = this.options.container;
    if (this.container == null) {
      return debug.error('Invalid Quill container', container);
    }
    if (this.options.debug) {
      Quill.debug(this.options.debug);
    }
    var html = this.container.innerHTML.trim();
    this.container.classList.add('ql-container');
    this.container.innerHTML = '';
    this.container.__quill = this;
    this.root = this.addContainer('ql-editor');
    this.root.classList.add('ql-blank');
    this.root.setAttribute('data-gramm', false);
    this.scrollingContainer = this.options.scrollingContainer || this.root;
    this.emitter = new _emitter4.default();
    this.scroll = _parchment2.default.create(this.root, {
      emitter: this.emitter,
      whitelist: this.options.formats
    });
    this.editor = new _editor2.default(this.scroll);
    this.selection = new _selection2.default(this.scroll, this.emitter);
    this.theme = new this.options.theme(this, this.options);
    this.keyboard = this.theme.addModule('keyboard');
    this.clipboard = this.theme.addModule('clipboard');
    this.history = this.theme.addModule('history');
    this.theme.init();
    this.emitter.on(_emitter4.default.events.EDITOR_CHANGE, function (type) {
      if (type === _emitter4.default.events.TEXT_CHANGE) {
        _this2.root.classList.toggle('ql-blank', _this2.editor.isBlank());
      }
    });
    this.emitter.on(_emitter4.default.events.SCROLL_UPDATE, function (source, mutations) {
      var range = _this2.selection.lastRange;
      var index = range && range.length === 0 ? range.index : undefined;
      modify.call(_this2, function () {
        return _this2.editor.update(null, mutations, index);
      }, source);
    });
    var contents = this.clipboard.convert('<div class=\'ql-editor\' style="white-space: normal;">' + html + '<p><br></p></div>');
    this.setContents(contents);
    this.history.clear();
    if (this.options.placeholder) {
      this.root.setAttribute('data-placeholder', this.options.placeholder);
    }
    if (this.options.readOnly) {
      this.disable();
    }
  }

  _createClass(Quill, [{
    key: 'addContainer',
    value: function addContainer(container) {
      var refNode = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

      if (typeof container === 'string') {
        var className = container;
        container = document.createElement('div');
        container.classList.add(className);
      }
      this.container.insertBefore(container, refNode);
      return container;
    }
  }, {
    key: 'blur',
    value: function blur() {
      this.selection.setRange(null);
    }
  }, {
    key: 'deleteText',
    value: function deleteText(index, length, source) {
      var _this3 = this;

      var _overload = overload(index, length, source);

      var _overload2 = _slicedToArray(_overload, 4);

      index = _overload2[0];
      length = _overload2[1];
      source = _overload2[3];

      return modify.call(this, function () {
        return _this3.editor.deleteText(index, length);
      }, source, index, -1 * length);
    }
  }, {
    key: 'disable',
    value: function disable() {
      this.enable(false);
    }
  }, {
    key: 'enable',
    value: function enable() {
      var enabled = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;

      this.scroll.enable(enabled);
      this.container.classList.toggle('ql-disabled', !enabled);
    }
  }, {
    key: 'focus',
    value: function focus() {
      var scrollTop = this.scrollingContainer.scrollTop;
      this.selection.focus();
      this.scrollingContainer.scrollTop = scrollTop;
      this.scrollIntoView();
    }
  }, {
    key: 'format',
    value: function format(name, value) {
      var _this4 = this;

      var source = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : _emitter4.default.sources.API;

      return modify.call(this, function () {
        var range = _this4.getSelection(true);
        var change = new _quillDelta2.default();
        if (range == null) {
          return change;
        } else if (_parchment2.default.query(name, _parchment2.default.Scope.BLOCK)) {
          change = _this4.editor.formatLine(range.index, range.length, _defineProperty({}, name, value));
        } else if (range.length === 0) {
          _this4.selection.format(name, value);
          return change;
        } else {
          change = _this4.editor.formatText(range.index, range.length, _defineProperty({}, name, value));
        }
        _this4.setSelection(range, _emitter4.default.sources.SILENT);
        return change;
      }, source);
    }
  }, {
    key: 'formatLine',
    value: function formatLine(index, length, name, value, source) {
      var _this5 = this;

      var formats = void 0;

      var _overload3 = overload(index, length, name, value, source);

      var _overload4 = _slicedToArray(_overload3, 4);

      index = _overload4[0];
      length = _overload4[1];
      formats = _overload4[2];
      source = _overload4[3];

      return modify.call(this, function () {
        return _this5.editor.formatLine(index, length, formats);
      }, source, index, 0);
    }
  }, {
    key: 'formatText',
    value: function formatText(index, length, name, value, source) {
      var _this6 = this;

      var formats = void 0;

      var _overload5 = overload(index, length, name, value, source);

      var _overload6 = _slicedToArray(_overload5, 4);

      index = _overload6[0];
      length = _overload6[1];
      formats = _overload6[2];
      source = _overload6[3];

      return modify.call(this, function () {
        return _this6.editor.formatText(index, length, formats);
      }, source, index, 0);
    }
  }, {
    key: 'getBounds',
    value: function getBounds(index) {
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;

      var bounds = void 0;
      if (typeof index === 'number') {
        bounds = this.selection.getBounds(index, length);
      } else {
        bounds = this.selection.getBounds(index.index, index.length);
      }
      var containerBounds = this.container.getBoundingClientRect();
      return {
        bottom: bounds.bottom - containerBounds.top,
        height: bounds.height,
        left: bounds.left - containerBounds.left,
        right: bounds.right - containerBounds.left,
        top: bounds.top - containerBounds.top,
        width: bounds.width
      };
    }
  }, {
    key: 'getContents',
    value: function getContents() {
      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.getLength() - index;

      var _overload7 = overload(index, length);

      var _overload8 = _slicedToArray(_overload7, 2);

      index = _overload8[0];
      length = _overload8[1];

      return this.editor.getContents(index, length);
    }
  }, {
    key: 'getFormat',
    value: function getFormat() {
      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.getSelection(true);
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;

      if (typeof index === 'number') {
        return this.editor.getFormat(index, length);
      } else {
        return this.editor.getFormat(index.index, index.length);
      }
    }
  }, {
    key: 'getIndex',
    value: function getIndex(blot) {
      return blot.offset(this.scroll);
    }
  }, {
    key: 'getLength',
    value: function getLength() {
      return this.scroll.length();
    }
  }, {
    key: 'getLeaf',
    value: function getLeaf(index) {
      return this.scroll.leaf(index);
    }
  }, {
    key: 'getLine',
    value: function getLine(index) {
      return this.scroll.line(index);
    }
  }, {
    key: 'getLines',
    value: function getLines() {
      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Number.MAX_VALUE;

      if (typeof index !== 'number') {
        return this.scroll.lines(index.index, index.length);
      } else {
        return this.scroll.lines(index, length);
      }
    }
  }, {
    key: 'getModule',
    value: function getModule(name) {
      return this.theme.modules[name];
    }
  }, {
    key: 'getSelection',
    value: function getSelection() {
      var focus = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;

      if (focus) this.focus();
      this.update(); // Make sure we access getRange with editor in consistent state
      return this.selection.getRange()[0];
    }
  }, {
    key: 'getText',
    value: function getText() {
      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.getLength() - index;

      var _overload9 = overload(index, length);

      var _overload10 = _slicedToArray(_overload9, 2);

      index = _overload10[0];
      length = _overload10[1];

      return this.editor.getText(index, length);
    }
  }, {
    key: 'hasFocus',
    value: function hasFocus() {
      return this.selection.hasFocus();
    }
  }, {
    key: 'insertEmbed',
    value: function insertEmbed(index, embed, value) {
      var _this7 = this;

      var source = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : Quill.sources.API;

      return modify.call(this, function () {
        return _this7.editor.insertEmbed(index, embed, value);
      }, source, index);
    }
  }, {
    key: 'insertText',
    value: function insertText(index, text, name, value, source) {
      var _this8 = this;

      var formats = void 0;

      var _overload11 = overload(index, 0, name, value, source);

      var _overload12 = _slicedToArray(_overload11, 4);

      index = _overload12[0];
      formats = _overload12[2];
      source = _overload12[3];

      return modify.call(this, function () {
        return _this8.editor.insertText(index, text, formats);
      }, source, index, text.length);
    }
  }, {
    key: 'isEnabled',
    value: function isEnabled() {
      return !this.container.classList.contains('ql-disabled');
    }
  }, {
    key: 'off',
    value: function off() {
      return this.emitter.off.apply(this.emitter, arguments);
    }
  }, {
    key: 'on',
    value: function on() {
      return this.emitter.on.apply(this.emitter, arguments);
    }
  }, {
    key: 'once',
    value: function once() {
      return this.emitter.once.apply(this.emitter, arguments);
    }
  }, {
    key: 'pasteHTML',
    value: function pasteHTML(index, html, source) {
      this.clipboard.dangerouslyPasteHTML(index, html, source);
    }
  }, {
    key: 'removeFormat',
    value: function removeFormat(index, length, source) {
      var _this9 = this;

      var _overload13 = overload(index, length, source);

      var _overload14 = _slicedToArray(_overload13, 4);

      index = _overload14[0];
      length = _overload14[1];
      source = _overload14[3];

      return modify.call(this, function () {
        return _this9.editor.removeFormat(index, length);
      }, source, index);
    }
  }, {
    key: 'scrollIntoView',
    value: function scrollIntoView() {
      this.selection.scrollIntoView(this.scrollingContainer);
    }
  }, {
    key: 'setContents',
    value: function setContents(delta) {
      var _this10 = this;

      var source = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _emitter4.default.sources.API;

      return modify.call(this, function () {
        delta = new _quillDelta2.default(delta);
        var length = _this10.getLength();
        var deleted = _this10.editor.deleteText(0, length);
        var applied = _this10.editor.applyDelta(delta);
        var lastOp = applied.ops[applied.ops.length - 1];
        if (lastOp != null && typeof lastOp.insert === 'string' && lastOp.insert[lastOp.insert.length - 1] === '\n') {
          _this10.editor.deleteText(_this10.getLength() - 1, 1);
          applied.delete(1);
        }
        var ret = deleted.compose(applied);
        return ret;
      }, source);
    }
  }, {
    key: 'setSelection',
    value: function setSelection(index, length, source) {
      if (index == null) {
        this.selection.setRange(null, length || Quill.sources.API);
      } else {
        var _overload15 = overload(index, length, source);

        var _overload16 = _slicedToArray(_overload15, 4);

        index = _overload16[0];
        length = _overload16[1];
        source = _overload16[3];

        this.selection.setRange(new _selection.Range(index, length), source);
        if (source !== _emitter4.default.sources.SILENT) {
          this.selection.scrollIntoView(this.scrollingContainer);
        }
      }
    }
  }, {
    key: 'setText',
    value: function setText(text) {
      var source = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _emitter4.default.sources.API;

      var delta = new _quillDelta2.default().insert(text);
      return this.setContents(delta, source);
    }
  }, {
    key: 'update',
    value: function update() {
      var source = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : _emitter4.default.sources.USER;

      var change = this.scroll.update(source); // Will update selection before selection.update() does if text changes
      this.selection.update(source);
      return change;
    }
  }, {
    key: 'updateContents',
    value: function updateContents(delta) {
      var _this11 = this;

      var source = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : _emitter4.default.sources.API;

      return modify.call(this, function () {
        delta = new _quillDelta2.default(delta);
        return _this11.editor.applyDelta(delta, source);
      }, source, true);
    }
  }]);

  return Quill;
}();

Quill.DEFAULTS = {
  bounds: null,
  formats: null,
  modules: {},
  placeholder: '',
  readOnly: false,
  scrollingContainer: null,
  strict: true,
  theme: 'default'
};
Quill.events = _emitter4.default.events;
Quill.sources = _emitter4.default.sources;
// eslint-disable-next-line no-undef
Quill.version =  false ? 'dev' : "1.3.7";

Quill.imports = {
  'delta': _quillDelta2.default,
  'parchment': _parchment2.default,
  'core/module': _module2.default,
  'core/theme': _theme2.default
};

function expandConfig(container, userConfig) {
  userConfig = (0, _extend2.default)(true, {
    container: container,
    modules: {
      clipboard: true,
      keyboard: true,
      history: true
    }
  }, userConfig);
  if (!userConfig.theme || userConfig.theme === Quill.DEFAULTS.theme) {
    userConfig.theme = _theme2.default;
  } else {
    userConfig.theme = Quill.import('themes/' + userConfig.theme);
    if (userConfig.theme == null) {
      throw new Error('Invalid theme ' + userConfig.theme + '. Did you register it?');
    }
  }
  var themeConfig = (0, _extend2.default)(true, {}, userConfig.theme.DEFAULTS);
  [themeConfig, userConfig].forEach(function (config) {
    config.modules = config.modules || {};
    Object.keys(config.modules).forEach(function (module) {
      if (config.modules[module] === true) {
        config.modules[module] = {};
      }
    });
  });
  var moduleNames = Object.keys(themeConfig.modules).concat(Object.keys(userConfig.modules));
  var moduleConfig = moduleNames.reduce(function (config, name) {
    var moduleClass = Quill.import('modules/' + name);
    if (moduleClass == null) {
      debug.error('Cannot load ' + name + ' module. Are you sure you registered it?');
    } else {
      config[name] = moduleClass.DEFAULTS || {};
    }
    return config;
  }, {});
  // Special case toolbar shorthand
  if (userConfig.modules != null && userConfig.modules.toolbar && userConfig.modules.toolbar.constructor !== Object) {
    userConfig.modules.toolbar = {
      container: userConfig.modules.toolbar
    };
  }
  userConfig = (0, _extend2.default)(true, {}, Quill.DEFAULTS, { modules: moduleConfig }, themeConfig, userConfig);
  ['bounds', 'container', 'scrollingContainer'].forEach(function (key) {
    if (typeof userConfig[key] === 'string') {
      userConfig[key] = document.querySelector(userConfig[key]);
    }
  });
  userConfig.modules = Object.keys(userConfig.modules).reduce(function (config, name) {
    if (userConfig.modules[name]) {
      config[name] = userConfig.modules[name];
    }
    return config;
  }, {});
  return userConfig;
}

// Handle selection preservation and TEXT_CHANGE emission
// common to modification APIs
function modify(modifier, source, index, shift) {
  if (this.options.strict && !this.isEnabled() && source === _emitter4.default.sources.USER) {
    return new _quillDelta2.default();
  }
  var range = index == null ? null : this.getSelection();
  var oldDelta = this.editor.delta;
  var change = modifier();
  if (range != null) {
    if (index === true) index = range.index;
    if (shift == null) {
      range = shiftRange(range, change, source);
    } else if (shift !== 0) {
      range = shiftRange(range, index, shift, source);
    }
    this.setSelection(range, _emitter4.default.sources.SILENT);
  }
  if (change.length() > 0) {
    var _emitter;

    var args = [_emitter4.default.events.TEXT_CHANGE, change, oldDelta, source];
    (_emitter = this.emitter).emit.apply(_emitter, [_emitter4.default.events.EDITOR_CHANGE].concat(args));
    if (source !== _emitter4.default.sources.SILENT) {
      var _emitter2;

      (_emitter2 = this.emitter).emit.apply(_emitter2, args);
    }
  }
  return change;
}

function overload(index, length, name, value, source) {
  var formats = {};
  if (typeof index.index === 'number' && typeof index.length === 'number') {
    // Allow for throwaway end (used by insertText/insertEmbed)
    if (typeof length !== 'number') {
      source = value, value = name, name = length, length = index.length, index = index.index;
    } else {
      length = index.length, index = index.index;
    }
  } else if (typeof length !== 'number') {
    source = value, value = name, name = length, length = 0;
  }
  // Handle format being object, two format name/value strings or excluded
  if ((typeof name === 'undefined' ? 'undefined' : _typeof(name)) === 'object') {
    formats = name;
    source = value;
  } else if (typeof name === 'string') {
    if (value != null) {
      formats[name] = value;
    } else {
      source = name;
    }
  }
  // Handle optional source
  source = source || _emitter4.default.sources.API;
  return [index, length, formats, source];
}

function shiftRange(range, index, length, source) {
  if (range == null) return null;
  var start = void 0,
      end = void 0;
  if (index instanceof _quillDelta2.default) {
    var _map = [range.index, range.index + range.length].map(function (pos) {
      return index.transformPosition(pos, source !== _emitter4.default.sources.USER);
    });

    var _map2 = _slicedToArray(_map, 2);

    start = _map2[0];
    end = _map2[1];
  } else {
    var _map3 = [range.index, range.index + range.length].map(function (pos) {
      if (pos < index || pos === index && source === _emitter4.default.sources.USER) return pos;
      if (length >= 0) {
        return pos + length;
      } else {
        return Math.max(index, pos + length);
      }
    });

    var _map4 = _slicedToArray(_map3, 2);

    start = _map4[0];
    end = _map4[1];
  }
  return new _selection.Range(start, end - start);
}

exports.expandConfig = expandConfig;
exports.overload = overload;
exports.default = Quill;

/***/ }),
/* 6 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _text = __webpack_require__(7);

var _text2 = _interopRequireDefault(_text);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Inline = function (_Parchment$Inline) {
  _inherits(Inline, _Parchment$Inline);

  function Inline() {
    _classCallCheck(this, Inline);

    return _possibleConstructorReturn(this, (Inline.__proto__ || Object.getPrototypeOf(Inline)).apply(this, arguments));
  }

  _createClass(Inline, [{
    key: 'formatAt',
    value: function formatAt(index, length, name, value) {
      if (Inline.compare(this.statics.blotName, name) < 0 && _parchment2.default.query(name, _parchment2.default.Scope.BLOT)) {
        var blot = this.isolate(index, length);
        if (value) {
          blot.wrap(name, value);
        }
      } else {
        _get(Inline.prototype.__proto__ || Object.getPrototypeOf(Inline.prototype), 'formatAt', this).call(this, index, length, name, value);
      }
    }
  }, {
    key: 'optimize',
    value: function optimize(context) {
      _get(Inline.prototype.__proto__ || Object.getPrototypeOf(Inline.prototype), 'optimize', this).call(this, context);
      if (this.parent instanceof Inline && Inline.compare(this.statics.blotName, this.parent.statics.blotName) > 0) {
        var parent = this.parent.isolate(this.offset(), this.length());
        this.moveChildren(parent);
        parent.wrap(this);
      }
    }
  }], [{
    key: 'compare',
    value: function compare(self, other) {
      var selfIndex = Inline.order.indexOf(self);
      var otherIndex = Inline.order.indexOf(other);
      if (selfIndex >= 0 || otherIndex >= 0) {
        return selfIndex - otherIndex;
      } else if (self === other) {
        return 0;
      } else if (self < other) {
        return -1;
      } else {
        return 1;
      }
    }
  }]);

  return Inline;
}(_parchment2.default.Inline);

Inline.allowedChildren = [Inline, _parchment2.default.Embed, _text2.default];
// Lower index means deeper in the DOM tree, since not found (-1) is for embeds
Inline.order = ['cursor', 'inline', // Must be lower
'underline', 'strike', 'italic', 'bold', 'script', 'link', 'code' // Must be higher
];

exports.default = Inline;

/***/ }),
/* 7 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var TextBlot = function (_Parchment$Text) {
  _inherits(TextBlot, _Parchment$Text);

  function TextBlot() {
    _classCallCheck(this, TextBlot);

    return _possibleConstructorReturn(this, (TextBlot.__proto__ || Object.getPrototypeOf(TextBlot)).apply(this, arguments));
  }

  return TextBlot;
}(_parchment2.default.Text);

exports.default = TextBlot;

/***/ }),
/* 8 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _eventemitter = __webpack_require__(54);

var _eventemitter2 = _interopRequireDefault(_eventemitter);

var _logger = __webpack_require__(10);

var _logger2 = _interopRequireDefault(_logger);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var debug = (0, _logger2.default)('quill:events');

var EVENTS = ['selectionchange', 'mousedown', 'mouseup', 'click'];

EVENTS.forEach(function (eventName) {
  document.addEventListener(eventName, function () {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    [].slice.call(document.querySelectorAll('.ql-container')).forEach(function (node) {
      // TODO use WeakMap
      if (node.__quill && node.__quill.emitter) {
        var _node$__quill$emitter;

        (_node$__quill$emitter = node.__quill.emitter).handleDOM.apply(_node$__quill$emitter, args);
      }
    });
  });
});

var Emitter = function (_EventEmitter) {
  _inherits(Emitter, _EventEmitter);

  function Emitter() {
    _classCallCheck(this, Emitter);

    var _this = _possibleConstructorReturn(this, (Emitter.__proto__ || Object.getPrototypeOf(Emitter)).call(this));

    _this.listeners = {};
    _this.on('error', debug.error);
    return _this;
  }

  _createClass(Emitter, [{
    key: 'emit',
    value: function emit() {
      debug.log.apply(debug, arguments);
      _get(Emitter.prototype.__proto__ || Object.getPrototypeOf(Emitter.prototype), 'emit', this).apply(this, arguments);
    }
  }, {
    key: 'handleDOM',
    value: function handleDOM(event) {
      for (var _len2 = arguments.length, args = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
        args[_key2 - 1] = arguments[_key2];
      }

      (this.listeners[event.type] || []).forEach(function (_ref) {
        var node = _ref.node,
            handler = _ref.handler;

        if (event.target === node || node.contains(event.target)) {
          handler.apply(undefined, [event].concat(args));
        }
      });
    }
  }, {
    key: 'listenDOM',
    value: function listenDOM(eventName, node, handler) {
      if (!this.listeners[eventName]) {
        this.listeners[eventName] = [];
      }
      this.listeners[eventName].push({ node: node, handler: handler });
    }
  }]);

  return Emitter;
}(_eventemitter2.default);

Emitter.events = {
  EDITOR_CHANGE: 'editor-change',
  SCROLL_BEFORE_UPDATE: 'scroll-before-update',
  SCROLL_OPTIMIZE: 'scroll-optimize',
  SCROLL_UPDATE: 'scroll-update',
  SELECTION_CHANGE: 'selection-change',
  TEXT_CHANGE: 'text-change'
};
Emitter.sources = {
  API: 'api',
  SILENT: 'silent',
  USER: 'user'
};

exports.default = Emitter;

/***/ }),
/* 9 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Module = function Module(quill) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  _classCallCheck(this, Module);

  this.quill = quill;
  this.options = options;
};

Module.DEFAULTS = {};

exports.default = Module;

/***/ }),
/* 10 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
var levels = ['error', 'warn', 'log', 'info'];
var level = 'warn';

function debug(method) {
  if (levels.indexOf(method) <= levels.indexOf(level)) {
    var _console;

    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      args[_key - 1] = arguments[_key];
    }

    (_console = console)[method].apply(_console, args); // eslint-disable-line no-console
  }
}

function namespace(ns) {
  return levels.reduce(function (logger, method) {
    logger[method] = debug.bind(console, method, ns);
    return logger;
  }, {});
}

debug.level = namespace.level = function (newLevel) {
  level = newLevel;
};

exports.default = namespace;

/***/ }),
/* 11 */
/***/ (function(module, exports, __webpack_require__) {

var pSlice = Array.prototype.slice;
var objectKeys = __webpack_require__(52);
var isArguments = __webpack_require__(53);

var deepEqual = module.exports = function (actual, expected, opts) {
  if (!opts) opts = {};
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (actual instanceof Date && expected instanceof Date) {
    return actual.getTime() === expected.getTime();

  // 7.3. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!actual || !expected || typeof actual != 'object' && typeof expected != 'object') {
    return opts.strict ? actual === expected : actual == expected;

  // 7.4. For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected, opts);
  }
}

function isUndefinedOrNull(value) {
  return value === null || value === undefined;
}

function isBuffer (x) {
  if (!x || typeof x !== 'object' || typeof x.length !== 'number') return false;
  if (typeof x.copy !== 'function' || typeof x.slice !== 'function') {
    return false;
  }
  if (x.length > 0 && typeof x[0] !== 'number') return false;
  return true;
}

function objEquiv(a, b, opts) {
  var i, key;
  if (isUndefinedOrNull(a) || isUndefinedOrNull(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  //~~~I've managed to break Object.keys through screwy arguments passing.
  //   Converting to array solves the problem.
  if (isArguments(a)) {
    if (!isArguments(b)) {
      return false;
    }
    a = pSlice.call(a);
    b = pSlice.call(b);
    return deepEqual(a, b, opts);
  }
  if (isBuffer(a)) {
    if (!isBuffer(b)) {
      return false;
    }
    if (a.length !== b.length) return false;
    for (i = 0; i < a.length; i++) {
      if (a[i] !== b[i]) return false;
    }
    return true;
  }
  try {
    var ka = objectKeys(a),
        kb = objectKeys(b);
  } catch (e) {//happens when one is a string literal and the other isn't
    return false;
  }
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!deepEqual(a[key], b[key], opts)) return false;
  }
  return typeof a === typeof b;
}


/***/ }),
/* 12 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
var Registry = __webpack_require__(1);
var Attributor = /** @class */ (function () {
    function Attributor(attrName, keyName, options) {
        if (options === void 0) { options = {}; }
        this.attrName = attrName;
        this.keyName = keyName;
        var attributeBit = Registry.Scope.TYPE & Registry.Scope.ATTRIBUTE;
        if (options.scope != null) {
            // Ignore type bits, force attribute bit
            this.scope = (options.scope & Registry.Scope.LEVEL) | attributeBit;
        }
        else {
            this.scope = Registry.Scope.ATTRIBUTE;
        }
        if (options.whitelist != null)
            this.whitelist = options.whitelist;
    }
    Attributor.keys = function (node) {
        return [].map.call(node.attributes, function (item) {
            return item.name;
        });
    };
    Attributor.prototype.add = function (node, value) {
        if (!this.canAdd(node, value))
            return false;
        node.setAttribute(this.keyName, value);
        return true;
    };
    Attributor.prototype.canAdd = function (node, value) {
        var match = Registry.query(node, Registry.Scope.BLOT & (this.scope | Registry.Scope.TYPE));
        if (match == null)
            return false;
        if (this.whitelist == null)
            return true;
        if (typeof value === 'string') {
            return this.whitelist.indexOf(value.replace(/["']/g, '')) > -1;
        }
        else {
            return this.whitelist.indexOf(value) > -1;
        }
    };
    Attributor.prototype.remove = function (node) {
        node.removeAttribute(this.keyName);
    };
    Attributor.prototype.value = function (node) {
        var value = node.getAttribute(this.keyName);
        if (this.canAdd(node, value) && value) {
            return value;
        }
        return '';
    };
    return Attributor;
}());
exports.default = Attributor;


/***/ }),
/* 13 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.Code = undefined;

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

var _text = __webpack_require__(7);

var _text2 = _interopRequireDefault(_text);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Code = function (_Inline) {
  _inherits(Code, _Inline);

  function Code() {
    _classCallCheck(this, Code);

    return _possibleConstructorReturn(this, (Code.__proto__ || Object.getPrototypeOf(Code)).apply(this, arguments));
  }

  return Code;
}(_inline2.default);

Code.blotName = 'code';
Code.tagName = 'CODE';

var CodeBlock = function (_Block) {
  _inherits(CodeBlock, _Block);

  function CodeBlock() {
    _classCallCheck(this, CodeBlock);

    return _possibleConstructorReturn(this, (CodeBlock.__proto__ || Object.getPrototypeOf(CodeBlock)).apply(this, arguments));
  }

  _createClass(CodeBlock, [{
    key: 'delta',
    value: function delta() {
      var _this3 = this;

      var text = this.domNode.textContent;
      if (text.endsWith('\n')) {
        // Should always be true
        text = text.slice(0, -1);
      }
      return text.split('\n').reduce(function (delta, frag) {
        return delta.insert(frag).insert('\n', _this3.formats());
      }, new _quillDelta2.default());
    }
  }, {
    key: 'format',
    value: function format(name, value) {
      if (name === this.statics.blotName && value) return;

      var _descendant = this.descendant(_text2.default, this.length() - 1),
          _descendant2 = _slicedToArray(_descendant, 1),
          text = _descendant2[0];

      if (text != null) {
        text.deleteAt(text.length() - 1, 1);
      }
      _get(CodeBlock.prototype.__proto__ || Object.getPrototypeOf(CodeBlock.prototype), 'format', this).call(this, name, value);
    }
  }, {
    key: 'formatAt',
    value: function formatAt(index, length, name, value) {
      if (length === 0) return;
      if (_parchment2.default.query(name, _parchment2.default.Scope.BLOCK) == null || name === this.statics.blotName && value === this.statics.formats(this.domNode)) {
        return;
      }
      var nextNewline = this.newlineIndex(index);
      if (nextNewline < 0 || nextNewline >= index + length) return;
      var prevNewline = this.newlineIndex(index, true) + 1;
      var isolateLength = nextNewline - prevNewline + 1;
      var blot = this.isolate(prevNewline, isolateLength);
      var next = blot.next;
      blot.format(name, value);
      if (next instanceof CodeBlock) {
        next.formatAt(0, index - prevNewline + length - isolateLength, name, value);
      }
    }
  }, {
    key: 'insertAt',
    value: function insertAt(index, value, def) {
      if (def != null) return;

      var _descendant3 = this.descendant(_text2.default, index),
          _descendant4 = _slicedToArray(_descendant3, 2),
          text = _descendant4[0],
          offset = _descendant4[1];

      text.insertAt(offset, value);
    }
  }, {
    key: 'length',
    value: function length() {
      var length = this.domNode.textContent.length;
      if (!this.domNode.textContent.endsWith('\n')) {
        return length + 1;
      }
      return length;
    }
  }, {
    key: 'newlineIndex',
    value: function newlineIndex(searchIndex) {
      var reverse = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

      if (!reverse) {
        var offset = this.domNode.textContent.slice(searchIndex).indexOf('\n');
        return offset > -1 ? searchIndex + offset : -1;
      } else {
        return this.domNode.textContent.slice(0, searchIndex).lastIndexOf('\n');
      }
    }
  }, {
    key: 'optimize',
    value: function optimize(context) {
      if (!this.domNode.textContent.endsWith('\n')) {
        this.appendChild(_parchment2.default.create('text', '\n'));
      }
      _get(CodeBlock.prototype.__proto__ || Object.getPrototypeOf(CodeBlock.prototype), 'optimize', this).call(this, context);
      var next = this.next;
      if (next != null && next.prev === this && next.statics.blotName === this.statics.blotName && this.statics.formats(this.domNode) === next.statics.formats(next.domNode)) {
        next.optimize(context);
        next.moveChildren(this);
        next.remove();
      }
    }
  }, {
    key: 'replace',
    value: function replace(target) {
      _get(CodeBlock.prototype.__proto__ || Object.getPrototypeOf(CodeBlock.prototype), 'replace', this).call(this, target);
      [].slice.call(this.domNode.querySelectorAll('*')).forEach(function (node) {
        var blot = _parchment2.default.find(node);
        if (blot == null) {
          node.parentNode.removeChild(node);
        } else if (blot instanceof _parchment2.default.Embed) {
          blot.remove();
        } else {
          blot.unwrap();
        }
      });
    }
  }], [{
    key: 'create',
    value: function create(value) {
      var domNode = _get(CodeBlock.__proto__ || Object.getPrototypeOf(CodeBlock), 'create', this).call(this, value);
      domNode.setAttribute('spellcheck', false);
      return domNode;
    }
  }, {
    key: 'formats',
    value: function formats() {
      return true;
    }
  }]);

  return CodeBlock;
}(_block2.default);

CodeBlock.blotName = 'code-block';
CodeBlock.tagName = 'PRE';
CodeBlock.TAB = '  ';

exports.Code = Code;
exports.default = CodeBlock;

/***/ }),
/* 14 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _op = __webpack_require__(20);

var _op2 = _interopRequireDefault(_op);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _code = __webpack_require__(13);

var _code2 = _interopRequireDefault(_code);

var _cursor = __webpack_require__(24);

var _cursor2 = _interopRequireDefault(_cursor);

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

var _break = __webpack_require__(16);

var _break2 = _interopRequireDefault(_break);

var _clone = __webpack_require__(21);

var _clone2 = _interopRequireDefault(_clone);

var _deepEqual = __webpack_require__(11);

var _deepEqual2 = _interopRequireDefault(_deepEqual);

var _extend = __webpack_require__(3);

var _extend2 = _interopRequireDefault(_extend);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var ASCII = /^[ -~]*$/;

var Editor = function () {
  function Editor(scroll) {
    _classCallCheck(this, Editor);

    this.scroll = scroll;
    this.delta = this.getDelta();
  }

  _createClass(Editor, [{
    key: 'applyDelta',
    value: function applyDelta(delta) {
      var _this = this;

      var consumeNextNewline = false;
      this.scroll.update();
      var scrollLength = this.scroll.length();
      this.scroll.batchStart();
      delta = normalizeDelta(delta);
      delta.reduce(function (index, op) {
        var length = op.retain || op.delete || op.insert.length || 1;
        var attributes = op.attributes || {};
        if (op.insert != null) {
          if (typeof op.insert === 'string') {
            var text = op.insert;
            if (text.endsWith('\n') && consumeNextNewline) {
              consumeNextNewline = false;
              text = text.slice(0, -1);
            }
            if (index >= scrollLength && !text.endsWith('\n')) {
              consumeNextNewline = true;
            }
            _this.scroll.insertAt(index, text);

            var _scroll$line = _this.scroll.line(index),
                _scroll$line2 = _slicedToArray(_scroll$line, 2),
                line = _scroll$line2[0],
                offset = _scroll$line2[1];

            var formats = (0, _extend2.default)({}, (0, _block.bubbleFormats)(line));
            if (line instanceof _block2.default) {
              var _line$descendant = line.descendant(_parchment2.default.Leaf, offset),
                  _line$descendant2 = _slicedToArray(_line$descendant, 1),
                  leaf = _line$descendant2[0];

              formats = (0, _extend2.default)(formats, (0, _block.bubbleFormats)(leaf));
            }
            attributes = _op2.default.attributes.diff(formats, attributes) || {};
          } else if (_typeof(op.insert) === 'object') {
            var key = Object.keys(op.insert)[0]; // There should only be one key
            if (key == null) return index;
            _this.scroll.insertAt(index, key, op.insert[key]);
          }
          scrollLength += length;
        }
        Object.keys(attributes).forEach(function (name) {
          _this.scroll.formatAt(index, length, name, attributes[name]);
        });
        return index + length;
      }, 0);
      delta.reduce(function (index, op) {
        if (typeof op.delete === 'number') {
          _this.scroll.deleteAt(index, op.delete);
          return index;
        }
        return index + (op.retain || op.insert.length || 1);
      }, 0);
      this.scroll.batchEnd();
      return this.update(delta);
    }
  }, {
    key: 'deleteText',
    value: function deleteText(index, length) {
      this.scroll.deleteAt(index, length);
      return this.update(new _quillDelta2.default().retain(index).delete(length));
    }
  }, {
    key: 'formatLine',
    value: function formatLine(index, length) {
      var _this2 = this;

      var formats = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

      this.scroll.update();
      Object.keys(formats).forEach(function (format) {
        if (_this2.scroll.whitelist != null && !_this2.scroll.whitelist[format]) return;
        var lines = _this2.scroll.lines(index, Math.max(length, 1));
        var lengthRemaining = length;
        lines.forEach(function (line) {
          var lineLength = line.length();
          if (!(line instanceof _code2.default)) {
            line.format(format, formats[format]);
          } else {
            var codeIndex = index - line.offset(_this2.scroll);
            var codeLength = line.newlineIndex(codeIndex + lengthRemaining) - codeIndex + 1;
            line.formatAt(codeIndex, codeLength, format, formats[format]);
          }
          lengthRemaining -= lineLength;
        });
      });
      this.scroll.optimize();
      return this.update(new _quillDelta2.default().retain(index).retain(length, (0, _clone2.default)(formats)));
    }
  }, {
    key: 'formatText',
    value: function formatText(index, length) {
      var _this3 = this;

      var formats = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

      Object.keys(formats).forEach(function (format) {
        _this3.scroll.formatAt(index, length, format, formats[format]);
      });
      return this.update(new _quillDelta2.default().retain(index).retain(length, (0, _clone2.default)(formats)));
    }
  }, {
    key: 'getContents',
    value: function getContents(index, length) {
      return this.delta.slice(index, index + length);
    }
  }, {
    key: 'getDelta',
    value: function getDelta() {
      return this.scroll.lines().reduce(function (delta, line) {
        return delta.concat(line.delta());
      }, new _quillDelta2.default());
    }
  }, {
    key: 'getFormat',
    value: function getFormat(index) {
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;

      var lines = [],
          leaves = [];
      if (length === 0) {
        this.scroll.path(index).forEach(function (path) {
          var _path = _slicedToArray(path, 1),
              blot = _path[0];

          if (blot instanceof _block2.default) {
            lines.push(blot);
          } else if (blot instanceof _parchment2.default.Leaf) {
            leaves.push(blot);
          }
        });
      } else {
        lines = this.scroll.lines(index, length);
        leaves = this.scroll.descendants(_parchment2.default.Leaf, index, length);
      }
      var formatsArr = [lines, leaves].map(function (blots) {
        if (blots.length === 0) return {};
        var formats = (0, _block.bubbleFormats)(blots.shift());
        while (Object.keys(formats).length > 0) {
          var blot = blots.shift();
          if (blot == null) return formats;
          formats = combineFormats((0, _block.bubbleFormats)(blot), formats);
        }
        return formats;
      });
      return _extend2.default.apply(_extend2.default, formatsArr);
    }
  }, {
    key: 'getText',
    value: function getText(index, length) {
      return this.getContents(index, length).filter(function (op) {
        return typeof op.insert === 'string';
      }).map(function (op) {
        return op.insert;
      }).join('');
    }
  }, {
    key: 'insertEmbed',
    value: function insertEmbed(index, embed, value) {
      this.scroll.insertAt(index, embed, value);
      return this.update(new _quillDelta2.default().retain(index).insert(_defineProperty({}, embed, value)));
    }
  }, {
    key: 'insertText',
    value: function insertText(index, text) {
      var _this4 = this;

      var formats = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

      text = text.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
      this.scroll.insertAt(index, text);
      Object.keys(formats).forEach(function (format) {
        _this4.scroll.formatAt(index, text.length, format, formats[format]);
      });
      return this.update(new _quillDelta2.default().retain(index).insert(text, (0, _clone2.default)(formats)));
    }
  }, {
    key: 'isBlank',
    value: function isBlank() {
      if (this.scroll.children.length == 0) return true;
      if (this.scroll.children.length > 1) return false;
      var block = this.scroll.children.head;
      if (block.statics.blotName !== _block2.default.blotName) return false;
      if (block.children.length > 1) return false;
      return block.children.head instanceof _break2.default;
    }
  }, {
    key: 'removeFormat',
    value: function removeFormat(index, length) {
      var text = this.getText(index, length);

      var _scroll$line3 = this.scroll.line(index + length),
          _scroll$line4 = _slicedToArray(_scroll$line3, 2),
          line = _scroll$line4[0],
          offset = _scroll$line4[1];

      var suffixLength = 0,
          suffix = new _quillDelta2.default();
      if (line != null) {
        if (!(line instanceof _code2.default)) {
          suffixLength = line.length() - offset;
        } else {
          suffixLength = line.newlineIndex(offset) - offset + 1;
        }
        suffix = line.delta().slice(offset, offset + suffixLength - 1).insert('\n');
      }
      var contents = this.getContents(index, length + suffixLength);
      var diff = contents.diff(new _quillDelta2.default().insert(text).concat(suffix));
      var delta = new _quillDelta2.default().retain(index).concat(diff);
      return this.applyDelta(delta);
    }
  }, {
    key: 'update',
    value: function update(change) {
      var mutations = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
      var cursorIndex = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : undefined;

      var oldDelta = this.delta;
      if (mutations.length === 1 && mutations[0].type === 'characterData' && mutations[0].target.data.match(ASCII) && _parchment2.default.find(mutations[0].target)) {
        // Optimization for character changes
        var textBlot = _parchment2.default.find(mutations[0].target);
        var formats = (0, _block.bubbleFormats)(textBlot);
        var index = textBlot.offset(this.scroll);
        var oldValue = mutations[0].oldValue.replace(_cursor2.default.CONTENTS, '');
        var oldText = new _quillDelta2.default().insert(oldValue);
        var newText = new _quillDelta2.default().insert(textBlot.value());
        var diffDelta = new _quillDelta2.default().retain(index).concat(oldText.diff(newText, cursorIndex));
        change = diffDelta.reduce(function (delta, op) {
          if (op.insert) {
            return delta.insert(op.insert, formats);
          } else {
            return delta.push(op);
          }
        }, new _quillDelta2.default());
        this.delta = oldDelta.compose(change);
      } else {
        this.delta = this.getDelta();
        if (!change || !(0, _deepEqual2.default)(oldDelta.compose(change), this.delta)) {
          change = oldDelta.diff(this.delta, cursorIndex);
        }
      }
      return change;
    }
  }]);

  return Editor;
}();

function combineFormats(formats, combined) {
  return Object.keys(combined).reduce(function (merged, name) {
    if (formats[name] == null) return merged;
    if (combined[name] === formats[name]) {
      merged[name] = combined[name];
    } else if (Array.isArray(combined[name])) {
      if (combined[name].indexOf(formats[name]) < 0) {
        merged[name] = combined[name].concat([formats[name]]);
      }
    } else {
      merged[name] = [combined[name], formats[name]];
    }
    return merged;
  }, {});
}

function normalizeDelta(delta) {
  return delta.reduce(function (delta, op) {
    if (op.insert === 1) {
      var attributes = (0, _clone2.default)(op.attributes);
      delete attributes['image'];
      return delta.insert({ image: op.attributes.image }, attributes);
    }
    if (op.attributes != null && (op.attributes.list === true || op.attributes.bullet === true)) {
      op = (0, _clone2.default)(op);
      if (op.attributes.list) {
        op.attributes.list = 'ordered';
      } else {
        op.attributes.list = 'bullet';
        delete op.attributes.bullet;
      }
    }
    if (typeof op.insert === 'string') {
      var text = op.insert.replace(/\r\n/g, '\n').replace(/\r/g, '\n');
      return delta.insert(text, op.attributes);
    }
    return delta.push(op);
  }, new _quillDelta2.default());
}

exports.default = Editor;

/***/ }),
/* 15 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.Range = undefined;

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _clone = __webpack_require__(21);

var _clone2 = _interopRequireDefault(_clone);

var _deepEqual = __webpack_require__(11);

var _deepEqual2 = _interopRequireDefault(_deepEqual);

var _emitter3 = __webpack_require__(8);

var _emitter4 = _interopRequireDefault(_emitter3);

var _logger = __webpack_require__(10);

var _logger2 = _interopRequireDefault(_logger);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var debug = (0, _logger2.default)('quill:selection');

var Range = function Range(index) {
  var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;

  _classCallCheck(this, Range);

  this.index = index;
  this.length = length;
};

var Selection = function () {
  function Selection(scroll, emitter) {
    var _this = this;

    _classCallCheck(this, Selection);

    this.emitter = emitter;
    this.scroll = scroll;
    this.composing = false;
    this.mouseDown = false;
    this.root = this.scroll.domNode;
    this.cursor = _parchment2.default.create('cursor', this);
    // savedRange is last non-null range
    this.lastRange = this.savedRange = new Range(0, 0);
    this.handleComposition();
    this.handleDragging();
    this.emitter.listenDOM('selectionchange', document, function () {
      if (!_this.mouseDown) {
        setTimeout(_this.update.bind(_this, _emitter4.default.sources.USER), 1);
      }
    });
    this.emitter.on(_emitter4.default.events.EDITOR_CHANGE, function (type, delta) {
      if (type === _emitter4.default.events.TEXT_CHANGE && delta.length() > 0) {
        _this.update(_emitter4.default.sources.SILENT);
      }
    });
    this.emitter.on(_emitter4.default.events.SCROLL_BEFORE_UPDATE, function () {
      if (!_this.hasFocus()) return;
      var native = _this.getNativeRange();
      if (native == null) return;
      if (native.start.node === _this.cursor.textNode) return; // cursor.restore() will handle
      // TODO unclear if this has negative side effects
      _this.emitter.once(_emitter4.default.events.SCROLL_UPDATE, function () {
        try {
          _this.setNativeRange(native.start.node, native.start.offset, native.end.node, native.end.offset);
        } catch (ignored) {}
      });
    });
    this.emitter.on(_emitter4.default.events.SCROLL_OPTIMIZE, function (mutations, context) {
      if (context.range) {
        var _context$range = context.range,
            startNode = _context$range.startNode,
            startOffset = _context$range.startOffset,
            endNode = _context$range.endNode,
            endOffset = _context$range.endOffset;

        _this.setNativeRange(startNode, startOffset, endNode, endOffset);
      }
    });
    this.update(_emitter4.default.sources.SILENT);
  }

  _createClass(Selection, [{
    key: 'handleComposition',
    value: function handleComposition() {
      var _this2 = this;

      this.root.addEventListener('compositionstart', function () {
        _this2.composing = true;
      });
      this.root.addEventListener('compositionend', function () {
        _this2.composing = false;
        if (_this2.cursor.parent) {
          var range = _this2.cursor.restore();
          if (!range) return;
          setTimeout(function () {
            _this2.setNativeRange(range.startNode, range.startOffset, range.endNode, range.endOffset);
          }, 1);
        }
      });
    }
  }, {
    key: 'handleDragging',
    value: function handleDragging() {
      var _this3 = this;

      this.emitter.listenDOM('mousedown', document.body, function () {
        _this3.mouseDown = true;
      });
      this.emitter.listenDOM('mouseup', document.body, function () {
        _this3.mouseDown = false;
        _this3.update(_emitter4.default.sources.USER);
      });
    }
  }, {
    key: 'focus',
    value: function focus() {
      if (this.hasFocus()) return;
      this.root.focus();
      this.setRange(this.savedRange);
    }
  }, {
    key: 'format',
    value: function format(_format, value) {
      if (this.scroll.whitelist != null && !this.scroll.whitelist[_format]) return;
      this.scroll.update();
      var nativeRange = this.getNativeRange();
      if (nativeRange == null || !nativeRange.native.collapsed || _parchment2.default.query(_format, _parchment2.default.Scope.BLOCK)) return;
      if (nativeRange.start.node !== this.cursor.textNode) {
        var blot = _parchment2.default.find(nativeRange.start.node, false);
        if (blot == null) return;
        // TODO Give blot ability to not split
        if (blot instanceof _parchment2.default.Leaf) {
          var after = blot.split(nativeRange.start.offset);
          blot.parent.insertBefore(this.cursor, after);
        } else {
          blot.insertBefore(this.cursor, nativeRange.start.node); // Should never happen
        }
        this.cursor.attach();
      }
      this.cursor.format(_format, value);
      this.scroll.optimize();
      this.setNativeRange(this.cursor.textNode, this.cursor.textNode.data.length);
      this.update();
    }
  }, {
    key: 'getBounds',
    value: function getBounds(index) {
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;

      var scrollLength = this.scroll.length();
      index = Math.min(index, scrollLength - 1);
      length = Math.min(index + length, scrollLength - 1) - index;
      var node = void 0,
          _scroll$leaf = this.scroll.leaf(index),
          _scroll$leaf2 = _slicedToArray(_scroll$leaf, 2),
          leaf = _scroll$leaf2[0],
          offset = _scroll$leaf2[1];
      if (leaf == null) return null;

      var _leaf$position = leaf.position(offset, true);

      var _leaf$position2 = _slicedToArray(_leaf$position, 2);

      node = _leaf$position2[0];
      offset = _leaf$position2[1];

      var range = document.createRange();
      if (length > 0) {
        range.setStart(node, offset);

        var _scroll$leaf3 = this.scroll.leaf(index + length);

        var _scroll$leaf4 = _slicedToArray(_scroll$leaf3, 2);

        leaf = _scroll$leaf4[0];
        offset = _scroll$leaf4[1];

        if (leaf == null) return null;

        var _leaf$position3 = leaf.position(offset, true);

        var _leaf$position4 = _slicedToArray(_leaf$position3, 2);

        node = _leaf$position4[0];
        offset = _leaf$position4[1];

        range.setEnd(node, offset);
        return range.getBoundingClientRect();
      } else {
        var side = 'left';
        var rect = void 0;
        if (node instanceof Text) {
          if (offset < node.data.length) {
            range.setStart(node, offset);
            range.setEnd(node, offset + 1);
          } else {
            range.setStart(node, offset - 1);
            range.setEnd(node, offset);
            side = 'right';
          }
          rect = range.getBoundingClientRect();
        } else {
          rect = leaf.domNode.getBoundingClientRect();
          if (offset > 0) side = 'right';
        }
        return {
          bottom: rect.top + rect.height,
          height: rect.height,
          left: rect[side],
          right: rect[side],
          top: rect.top,
          width: 0
        };
      }
    }
  }, {
    key: 'getNativeRange',
    value: function getNativeRange() {
      var selection = document.getSelection();
      if (selection == null || selection.rangeCount <= 0) return null;
      var nativeRange = selection.getRangeAt(0);
      if (nativeRange == null) return null;
      var range = this.normalizeNative(nativeRange);
      debug.info('getNativeRange', range);
      return range;
    }
  }, {
    key: 'getRange',
    value: function getRange() {
      var normalized = this.getNativeRange();
      if (normalized == null) return [null, null];
      var range = this.normalizedToRange(normalized);
      return [range, normalized];
    }
  }, {
    key: 'hasFocus',
    value: function hasFocus() {
      return document.activeElement === this.root;
    }
  }, {
    key: 'normalizedToRange',
    value: function normalizedToRange(range) {
      var _this4 = this;

      var positions = [[range.start.node, range.start.offset]];
      if (!range.native.collapsed) {
        positions.push([range.end.node, range.end.offset]);
      }
      var indexes = positions.map(function (position) {
        var _position = _slicedToArray(position, 2),
            node = _position[0],
            offset = _position[1];

        var blot = _parchment2.default.find(node, true);
        var index = blot.offset(_this4.scroll);
        if (offset === 0) {
          return index;
        } else if (blot instanceof _parchment2.default.Container) {
          return index + blot.length();
        } else {
          return index + blot.index(node, offset);
        }
      });
      var end = Math.min(Math.max.apply(Math, _toConsumableArray(indexes)), this.scroll.length() - 1);
      var start = Math.min.apply(Math, [end].concat(_toConsumableArray(indexes)));
      return new Range(start, end - start);
    }
  }, {
    key: 'normalizeNative',
    value: function normalizeNative(nativeRange) {
      if (!contains(this.root, nativeRange.startContainer) || !nativeRange.collapsed && !contains(this.root, nativeRange.endContainer)) {
        return null;
      }
      var range = {
        start: { node: nativeRange.startContainer, offset: nativeRange.startOffset },
        end: { node: nativeRange.endContainer, offset: nativeRange.endOffset },
        native: nativeRange
      };
      [range.start, range.end].forEach(function (position) {
        var node = position.node,
            offset = position.offset;
        while (!(node instanceof Text) && node.childNodes.length > 0) {
          if (node.childNodes.length > offset) {
            node = node.childNodes[offset];
            offset = 0;
          } else if (node.childNodes.length === offset) {
            node = node.lastChild;
            offset = node instanceof Text ? node.data.length : node.childNodes.length + 1;
          } else {
            break;
          }
        }
        position.node = node, position.offset = offset;
      });
      return range;
    }
  }, {
    key: 'rangeToNative',
    value: function rangeToNative(range) {
      var _this5 = this;

      var indexes = range.collapsed ? [range.index] : [range.index, range.index + range.length];
      var args = [];
      var scrollLength = this.scroll.length();
      indexes.forEach(function (index, i) {
        index = Math.min(scrollLength - 1, index);
        var node = void 0,
            _scroll$leaf5 = _this5.scroll.leaf(index),
            _scroll$leaf6 = _slicedToArray(_scroll$leaf5, 2),
            leaf = _scroll$leaf6[0],
            offset = _scroll$leaf6[1];
        var _leaf$position5 = leaf.position(offset, i !== 0);

        var _leaf$position6 = _slicedToArray(_leaf$position5, 2);

        node = _leaf$position6[0];
        offset = _leaf$position6[1];

        args.push(node, offset);
      });
      if (args.length < 2) {
        args = args.concat(args);
      }
      return args;
    }
  }, {
    key: 'scrollIntoView',
    value: function scrollIntoView(scrollingContainer) {
      var range = this.lastRange;
      if (range == null) return;
      var bounds = this.getBounds(range.index, range.length);
      if (bounds == null) return;
      var limit = this.scroll.length() - 1;

      var _scroll$line = this.scroll.line(Math.min(range.index, limit)),
          _scroll$line2 = _slicedToArray(_scroll$line, 1),
          first = _scroll$line2[0];

      var last = first;
      if (range.length > 0) {
        var _scroll$line3 = this.scroll.line(Math.min(range.index + range.length, limit));

        var _scroll$line4 = _slicedToArray(_scroll$line3, 1);

        last = _scroll$line4[0];
      }
      if (first == null || last == null) return;
      var scrollBounds = scrollingContainer.getBoundingClientRect();
      if (bounds.top < scrollBounds.top) {
        scrollingContainer.scrollTop -= scrollBounds.top - bounds.top;
      } else if (bounds.bottom > scrollBounds.bottom) {
        scrollingContainer.scrollTop += bounds.bottom - scrollBounds.bottom;
      }
    }
  }, {
    key: 'setNativeRange',
    value: function setNativeRange(startNode, startOffset) {
      var endNode = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : startNode;
      var endOffset = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : startOffset;
      var force = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;

      debug.info('setNativeRange', startNode, startOffset, endNode, endOffset);
      if (startNode != null && (this.root.parentNode == null || startNode.parentNode == null || endNode.parentNode == null)) {
        return;
      }
      var selection = document.getSelection();
      if (selection == null) return;
      if (startNode != null) {
        if (!this.hasFocus()) this.root.focus();
        var native = (this.getNativeRange() || {}).native;
        if (native == null || force || startNode !== native.startContainer || startOffset !== native.startOffset || endNode !== native.endContainer || endOffset !== native.endOffset) {

          if (startNode.tagName == "BR") {
            startOffset = [].indexOf.call(startNode.parentNode.childNodes, startNode);
            startNode = startNode.parentNode;
          }
          if (endNode.tagName == "BR") {
            endOffset = [].indexOf.call(endNode.parentNode.childNodes, endNode);
            endNode = endNode.parentNode;
          }
          var range = document.createRange();
          range.setStart(startNode, startOffset);
          range.setEnd(endNode, endOffset);
          selection.removeAllRanges();
          selection.addRange(range);
        }
      } else {
        selection.removeAllRanges();
        this.root.blur();
        document.body.focus(); // root.blur() not enough on IE11+Travis+SauceLabs (but not local VMs)
      }
    }
  }, {
    key: 'setRange',
    value: function setRange(range) {
      var force = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
      var source = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : _emitter4.default.sources.API;

      if (typeof force === 'string') {
        source = force;
        force = false;
      }
      debug.info('setRange', range);
      if (range != null) {
        var args = this.rangeToNative(range);
        this.setNativeRange.apply(this, _toConsumableArray(args).concat([force]));
      } else {
        this.setNativeRange(null);
      }
      this.update(source);
    }
  }, {
    key: 'update',
    value: function update() {
      var source = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : _emitter4.default.sources.USER;

      var oldRange = this.lastRange;

      var _getRange = this.getRange(),
          _getRange2 = _slicedToArray(_getRange, 2),
          lastRange = _getRange2[0],
          nativeRange = _getRange2[1];

      this.lastRange = lastRange;
      if (this.lastRange != null) {
        this.savedRange = this.lastRange;
      }
      if (!(0, _deepEqual2.default)(oldRange, this.lastRange)) {
        var _emitter;

        if (!this.composing && nativeRange != null && nativeRange.native.collapsed && nativeRange.start.node !== this.cursor.textNode) {
          this.cursor.restore();
        }
        var args = [_emitter4.default.events.SELECTION_CHANGE, (0, _clone2.default)(this.lastRange), (0, _clone2.default)(oldRange), source];
        (_emitter = this.emitter).emit.apply(_emitter, [_emitter4.default.events.EDITOR_CHANGE].concat(args));
        if (source !== _emitter4.default.sources.SILENT) {
          var _emitter2;

          (_emitter2 = this.emitter).emit.apply(_emitter2, args);
        }
      }
    }
  }]);

  return Selection;
}();

function contains(parent, descendant) {
  try {
    // Firefox inserts inaccessible nodes around video elements
    descendant.parentNode;
  } catch (e) {
    return false;
  }
  // IE11 has bug with Text nodes
  // https://connect.microsoft.com/IE/feedback/details/780874/node-contains-is-incorrect
  if (descendant instanceof Text) {
    descendant = descendant.parentNode;
  }
  return parent.contains(descendant);
}

exports.Range = Range;
exports.default = Selection;

/***/ }),
/* 16 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Break = function (_Parchment$Embed) {
  _inherits(Break, _Parchment$Embed);

  function Break() {
    _classCallCheck(this, Break);

    return _possibleConstructorReturn(this, (Break.__proto__ || Object.getPrototypeOf(Break)).apply(this, arguments));
  }

  _createClass(Break, [{
    key: 'insertInto',
    value: function insertInto(parent, ref) {
      if (parent.children.length === 0) {
        _get(Break.prototype.__proto__ || Object.getPrototypeOf(Break.prototype), 'insertInto', this).call(this, parent, ref);
      } else {
        this.remove();
      }
    }
  }, {
    key: 'length',
    value: function length() {
      return 0;
    }
  }, {
    key: 'value',
    value: function value() {
      return '';
    }
  }], [{
    key: 'value',
    value: function value() {
      return undefined;
    }
  }]);

  return Break;
}(_parchment2.default.Embed);

Break.blotName = 'break';
Break.tagName = 'BR';

exports.default = Break;

/***/ }),
/* 17 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var linked_list_1 = __webpack_require__(44);
var shadow_1 = __webpack_require__(30);
var Registry = __webpack_require__(1);
var ContainerBlot = /** @class */ (function (_super) {
    __extends(ContainerBlot, _super);
    function ContainerBlot(domNode) {
        var _this = _super.call(this, domNode) || this;
        _this.build();
        return _this;
    }
    ContainerBlot.prototype.appendChild = function (other) {
        this.insertBefore(other);
    };
    ContainerBlot.prototype.attach = function () {
        _super.prototype.attach.call(this);
        this.children.forEach(function (child) {
            child.attach();
        });
    };
    ContainerBlot.prototype.build = function () {
        var _this = this;
        this.children = new linked_list_1.default();
        // Need to be reversed for if DOM nodes already in order
        [].slice
            .call(this.domNode.childNodes)
            .reverse()
            .forEach(function (node) {
            try {
                var child = makeBlot(node);
                _this.insertBefore(child, _this.children.head || undefined);
            }
            catch (err) {
                if (err instanceof Registry.ParchmentError)
                    return;
                else
                    throw err;
            }
        });
    };
    ContainerBlot.prototype.deleteAt = function (index, length) {
        if (index === 0 && length === this.length()) {
            return this.remove();
        }
        this.children.forEachAt(index, length, function (child, offset, length) {
            child.deleteAt(offset, length);
        });
    };
    ContainerBlot.prototype.descendant = function (criteria, index) {
        var _a = this.children.find(index), child = _a[0], offset = _a[1];
        if ((criteria.blotName == null && criteria(child)) ||
            (criteria.blotName != null && child instanceof criteria)) {
            return [child, offset];
        }
        else if (child instanceof ContainerBlot) {
            return child.descendant(criteria, offset);
        }
        else {
            return [null, -1];
        }
    };
    ContainerBlot.prototype.descendants = function (criteria, index, length) {
        if (index === void 0) { index = 0; }
        if (length === void 0) { length = Number.MAX_VALUE; }
        var descendants = [];
        var lengthLeft = length;
        this.children.forEachAt(index, length, function (child, index, length) {
            if ((criteria.blotName == null && criteria(child)) ||
                (criteria.blotName != null && child instanceof criteria)) {
                descendants.push(child);
            }
            if (child instanceof ContainerBlot) {
                descendants = descendants.concat(child.descendants(criteria, index, lengthLeft));
            }
            lengthLeft -= length;
        });
        return descendants;
    };
    ContainerBlot.prototype.detach = function () {
        this.children.forEach(function (child) {
            child.detach();
        });
        _super.prototype.detach.call(this);
    };
    ContainerBlot.prototype.formatAt = function (index, length, name, value) {
        this.children.forEachAt(index, length, function (child, offset, length) {
            child.formatAt(offset, length, name, value);
        });
    };
    ContainerBlot.prototype.insertAt = function (index, value, def) {
        var _a = this.children.find(index), child = _a[0], offset = _a[1];
        if (child) {
            child.insertAt(offset, value, def);
        }
        else {
            var blot = def == null ? Registry.create('text', value) : Registry.create(value, def);
            this.appendChild(blot);
        }
    };
    ContainerBlot.prototype.insertBefore = function (childBlot, refBlot) {
        if (this.statics.allowedChildren != null &&
            !this.statics.allowedChildren.some(function (child) {
                return childBlot instanceof child;
            })) {
            throw new Registry.ParchmentError("Cannot insert " + childBlot.statics.blotName + " into " + this.statics.blotName);
        }
        childBlot.insertInto(this, refBlot);
    };
    ContainerBlot.prototype.length = function () {
        return this.children.reduce(function (memo, child) {
            return memo + child.length();
        }, 0);
    };
    ContainerBlot.prototype.moveChildren = function (targetParent, refNode) {
        this.children.forEach(function (child) {
            targetParent.insertBefore(child, refNode);
        });
    };
    ContainerBlot.prototype.optimize = function (context) {
        _super.prototype.optimize.call(this, context);
        if (this.children.length === 0) {
            if (this.statics.defaultChild != null) {
                var child = Registry.create(this.statics.defaultChild);
                this.appendChild(child);
                child.optimize(context);
            }
            else {
                this.remove();
            }
        }
    };
    ContainerBlot.prototype.path = function (index, inclusive) {
        if (inclusive === void 0) { inclusive = false; }
        var _a = this.children.find(index, inclusive), child = _a[0], offset = _a[1];
        var position = [[this, index]];
        if (child instanceof ContainerBlot) {
            return position.concat(child.path(offset, inclusive));
        }
        else if (child != null) {
            position.push([child, offset]);
        }
        return position;
    };
    ContainerBlot.prototype.removeChild = function (child) {
        this.children.remove(child);
    };
    ContainerBlot.prototype.replace = function (target) {
        if (target instanceof ContainerBlot) {
            target.moveChildren(this);
        }
        _super.prototype.replace.call(this, target);
    };
    ContainerBlot.prototype.split = function (index, force) {
        if (force === void 0) { force = false; }
        if (!force) {
            if (index === 0)
                return this;
            if (index === this.length())
                return this.next;
        }
        var after = this.clone();
        this.parent.insertBefore(after, this.next);
        this.children.forEachAt(index, this.length(), function (child, offset, length) {
            child = child.split(offset, force);
            after.appendChild(child);
        });
        return after;
    };
    ContainerBlot.prototype.unwrap = function () {
        this.moveChildren(this.parent, this.next);
        this.remove();
    };
    ContainerBlot.prototype.update = function (mutations, context) {
        var _this = this;
        var addedNodes = [];
        var removedNodes = [];
        mutations.forEach(function (mutation) {
            if (mutation.target === _this.domNode && mutation.type === 'childList') {
                addedNodes.push.apply(addedNodes, mutation.addedNodes);
                removedNodes.push.apply(removedNodes, mutation.removedNodes);
            }
        });
        removedNodes.forEach(function (node) {
            // Check node has actually been removed
            // One exception is Chrome does not immediately remove IFRAMEs
            // from DOM but MutationRecord is correct in its reported removal
            if (node.parentNode != null &&
                // @ts-ignore
                node.tagName !== 'IFRAME' &&
                document.body.compareDocumentPosition(node) & Node.DOCUMENT_POSITION_CONTAINED_BY) {
                return;
            }
            var blot = Registry.find(node);
            if (blot == null)
                return;
            if (blot.domNode.parentNode == null || blot.domNode.parentNode === _this.domNode) {
                blot.detach();
            }
        });
        addedNodes
            .filter(function (node) {
            return node.parentNode == _this.domNode;
        })
            .sort(function (a, b) {
            if (a === b)
                return 0;
            if (a.compareDocumentPosition(b) & Node.DOCUMENT_POSITION_FOLLOWING) {
                return 1;
            }
            return -1;
        })
            .forEach(function (node) {
            var refBlot = null;
            if (node.nextSibling != null) {
                refBlot = Registry.find(node.nextSibling);
            }
            var blot = makeBlot(node);
            if (blot.next != refBlot || blot.next == null) {
                if (blot.parent != null) {
                    blot.parent.removeChild(_this);
                }
                _this.insertBefore(blot, refBlot || undefined);
            }
        });
    };
    return ContainerBlot;
}(shadow_1.default));
function makeBlot(node) {
    var blot = Registry.find(node);
    if (blot == null) {
        try {
            blot = Registry.create(node);
        }
        catch (e) {
            blot = Registry.create(Registry.Scope.INLINE);
            [].slice.call(node.childNodes).forEach(function (child) {
                // @ts-ignore
                blot.domNode.appendChild(child);
            });
            if (node.parentNode) {
                node.parentNode.replaceChild(blot.domNode, node);
            }
            blot.attach();
        }
    }
    return blot;
}
exports.default = ContainerBlot;


/***/ }),
/* 18 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var attributor_1 = __webpack_require__(12);
var store_1 = __webpack_require__(31);
var container_1 = __webpack_require__(17);
var Registry = __webpack_require__(1);
var FormatBlot = /** @class */ (function (_super) {
    __extends(FormatBlot, _super);
    function FormatBlot(domNode) {
        var _this = _super.call(this, domNode) || this;
        _this.attributes = new store_1.default(_this.domNode);
        return _this;
    }
    FormatBlot.formats = function (domNode) {
        if (typeof this.tagName === 'string') {
            return true;
        }
        else if (Array.isArray(this.tagName)) {
            return domNode.tagName.toLowerCase();
        }
        return undefined;
    };
    FormatBlot.prototype.format = function (name, value) {
        var format = Registry.query(name);
        if (format instanceof attributor_1.default) {
            this.attributes.attribute(format, value);
        }
        else if (value) {
            if (format != null && (name !== this.statics.blotName || this.formats()[name] !== value)) {
                this.replaceWith(name, value);
            }
        }
    };
    FormatBlot.prototype.formats = function () {
        var formats = this.attributes.values();
        var format = this.statics.formats(this.domNode);
        if (format != null) {
            formats[this.statics.blotName] = format;
        }
        return formats;
    };
    FormatBlot.prototype.replaceWith = function (name, value) {
        var replacement = _super.prototype.replaceWith.call(this, name, value);
        this.attributes.copy(replacement);
        return replacement;
    };
    FormatBlot.prototype.update = function (mutations, context) {
        var _this = this;
        _super.prototype.update.call(this, mutations, context);
        if (mutations.some(function (mutation) {
            return mutation.target === _this.domNode && mutation.type === 'attributes';
        })) {
            this.attributes.build();
        }
    };
    FormatBlot.prototype.wrap = function (name, value) {
        var wrapper = _super.prototype.wrap.call(this, name, value);
        if (wrapper instanceof FormatBlot && wrapper.statics.scope === this.statics.scope) {
            this.attributes.move(wrapper);
        }
        return wrapper;
    };
    return FormatBlot;
}(container_1.default));
exports.default = FormatBlot;


/***/ }),
/* 19 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var shadow_1 = __webpack_require__(30);
var Registry = __webpack_require__(1);
var LeafBlot = /** @class */ (function (_super) {
    __extends(LeafBlot, _super);
    function LeafBlot() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    LeafBlot.value = function (domNode) {
        return true;
    };
    LeafBlot.prototype.index = function (node, offset) {
        if (this.domNode === node ||
            this.domNode.compareDocumentPosition(node) & Node.DOCUMENT_POSITION_CONTAINED_BY) {
            return Math.min(offset, 1);
        }
        return -1;
    };
    LeafBlot.prototype.position = function (index, inclusive) {
        var offset = [].indexOf.call(this.parent.domNode.childNodes, this.domNode);
        if (index > 0)
            offset += 1;
        return [this.parent.domNode, offset];
    };
    LeafBlot.prototype.value = function () {
        var _a;
        return _a = {}, _a[this.statics.blotName] = this.statics.value(this.domNode) || true, _a;
    };
    LeafBlot.scope = Registry.Scope.INLINE_BLOT;
    return LeafBlot;
}(shadow_1.default));
exports.default = LeafBlot;


/***/ }),
/* 20 */
/***/ (function(module, exports, __webpack_require__) {

var equal = __webpack_require__(11);
var extend = __webpack_require__(3);


var lib = {
  attributes: {
    compose: function (a, b, keepNull) {
      if (typeof a !== 'object') a = {};
      if (typeof b !== 'object') b = {};
      var attributes = extend(true, {}, b);
      if (!keepNull) {
        attributes = Object.keys(attributes).reduce(function (copy, key) {
          if (attributes[key] != null) {
            copy[key] = attributes[key];
          }
          return copy;
        }, {});
      }
      for (var key in a) {
        if (a[key] !== undefined && b[key] === undefined) {
          attributes[key] = a[key];
        }
      }
      return Object.keys(attributes).length > 0 ? attributes : undefined;
    },

    diff: function(a, b) {
      if (typeof a !== 'object') a = {};
      if (typeof b !== 'object') b = {};
      var attributes = Object.keys(a).concat(Object.keys(b)).reduce(function (attributes, key) {
        if (!equal(a[key], b[key])) {
          attributes[key] = b[key] === undefined ? null : b[key];
        }
        return attributes;
      }, {});
      return Object.keys(attributes).length > 0 ? attributes : undefined;
    },

    transform: function (a, b, priority) {
      if (typeof a !== 'object') return b;
      if (typeof b !== 'object') return undefined;
      if (!priority) return b;  // b simply overwrites us without priority
      var attributes = Object.keys(b).reduce(function (attributes, key) {
        if (a[key] === undefined) attributes[key] = b[key];  // null is a valid value
        return attributes;
      }, {});
      return Object.keys(attributes).length > 0 ? attributes : undefined;
    }
  },

  iterator: function (ops) {
    return new Iterator(ops);
  },

  length: function (op) {
    if (typeof op['delete'] === 'number') {
      return op['delete'];
    } else if (typeof op.retain === 'number') {
      return op.retain;
    } else {
      return typeof op.insert === 'string' ? op.insert.length : 1;
    }
  }
};


function Iterator(ops) {
  this.ops = ops;
  this.index = 0;
  this.offset = 0;
};

Iterator.prototype.hasNext = function () {
  return this.peekLength() < Infinity;
};

Iterator.prototype.next = function (length) {
  if (!length) length = Infinity;
  var nextOp = this.ops[this.index];
  if (nextOp) {
    var offset = this.offset;
    var opLength = lib.length(nextOp)
    if (length >= opLength - offset) {
      length = opLength - offset;
      this.index += 1;
      this.offset = 0;
    } else {
      this.offset += length;
    }
    if (typeof nextOp['delete'] === 'number') {
      return { 'delete': length };
    } else {
      var retOp = {};
      if (nextOp.attributes) {
        retOp.attributes = nextOp.attributes;
      }
      if (typeof nextOp.retain === 'number') {
        retOp.retain = length;
      } else if (typeof nextOp.insert === 'string') {
        retOp.insert = nextOp.insert.substr(offset, length);
      } else {
        // offset should === 0, length should === 1
        retOp.insert = nextOp.insert;
      }
      return retOp;
    }
  } else {
    return { retain: Infinity };
  }
};

Iterator.prototype.peek = function () {
  return this.ops[this.index];
};

Iterator.prototype.peekLength = function () {
  if (this.ops[this.index]) {
    // Should never return 0 if our index is being managed correctly
    return lib.length(this.ops[this.index]) - this.offset;
  } else {
    return Infinity;
  }
};

Iterator.prototype.peekType = function () {
  if (this.ops[this.index]) {
    if (typeof this.ops[this.index]['delete'] === 'number') {
      return 'delete';
    } else if (typeof this.ops[this.index].retain === 'number') {
      return 'retain';
    } else {
      return 'insert';
    }
  }
  return 'retain';
};

Iterator.prototype.rest = function () {
  if (!this.hasNext()) {
    return [];
  } else if (this.offset === 0) {
    return this.ops.slice(this.index);
  } else {
    var offset = this.offset;
    var index = this.index;
    var next = this.next();
    var rest = this.ops.slice(this.index);
    this.offset = offset;
    this.index = index;
    return [next].concat(rest);
  }
};


module.exports = lib;


/***/ }),
/* 21 */
/***/ (function(module, exports) {

var clone = (function() {
'use strict';

function _instanceof(obj, type) {
  return type != null && obj instanceof type;
}

var nativeMap;
try {
  nativeMap = Map;
} catch(_) {
  // maybe a reference error because no `Map`. Give it a dummy value that no
  // value will ever be an instanceof.
  nativeMap = function() {};
}

var nativeSet;
try {
  nativeSet = Set;
} catch(_) {
  nativeSet = function() {};
}

var nativePromise;
try {
  nativePromise = Promise;
} catch(_) {
  nativePromise = function() {};
}

/**
 * Clones (copies) an Object using deep copying.
 *
 * This function supports circular references by default, but if you are certain
 * there are no circular references in your object, you can save some CPU time
 * by calling clone(obj, false).
 *
 * Caution: if `circular` is false and `parent` contains circular references,
 * your program may enter an infinite loop and crash.
 *
 * @param `parent` - the object to be cloned
 * @param `circular` - set to true if the object to be cloned may contain
 *    circular references. (optional - true by default)
 * @param `depth` - set to a number if the object is only to be cloned to
 *    a particular depth. (optional - defaults to Infinity)
 * @param `prototype` - sets the prototype to be used when cloning an object.
 *    (optional - defaults to parent prototype).
 * @param `includeNonEnumerable` - set to true if the non-enumerable properties
 *    should be cloned as well. Non-enumerable properties on the prototype
 *    chain will be ignored. (optional - false by default)
*/
function clone(parent, circular, depth, prototype, includeNonEnumerable) {
  if (typeof circular === 'object') {
    depth = circular.depth;
    prototype = circular.prototype;
    includeNonEnumerable = circular.includeNonEnumerable;
    circular = circular.circular;
  }
  // maintain two arrays for circular references, where corresponding parents
  // and children have the same index
  var allParents = [];
  var allChildren = [];

  var useBuffer = typeof Buffer != 'undefined';

  if (typeof circular == 'undefined')
    circular = true;

  if (typeof depth == 'undefined')
    depth = Infinity;

  // recurse this function so we don't reset allParents and allChildren
  function _clone(parent, depth) {
    // cloning null always returns null
    if (parent === null)
      return null;

    if (depth === 0)
      return parent;

    var child;
    var proto;
    if (typeof parent != 'object') {
      return parent;
    }

    if (_instanceof(parent, nativeMap)) {
      child = new nativeMap();
    } else if (_instanceof(parent, nativeSet)) {
      child = new nativeSet();
    } else if (_instanceof(parent, nativePromise)) {
      child = new nativePromise(function (resolve, reject) {
        parent.then(function(value) {
          resolve(_clone(value, depth - 1));
        }, function(err) {
          reject(_clone(err, depth - 1));
        });
      });
    } else if (clone.__isArray(parent)) {
      child = [];
    } else if (clone.__isRegExp(parent)) {
      child = new RegExp(parent.source, __getRegExpFlags(parent));
      if (parent.lastIndex) child.lastIndex = parent.lastIndex;
    } else if (clone.__isDate(parent)) {
      child = new Date(parent.getTime());
    } else if (useBuffer && Buffer.isBuffer(parent)) {
      if (Buffer.allocUnsafe) {
        // Node.js >= 4.5.0
        child = Buffer.allocUnsafe(parent.length);
      } else {
        // Older Node.js versions
        child = new Buffer(parent.length);
      }
      parent.copy(child);
      return child;
    } else if (_instanceof(parent, Error)) {
      child = Object.create(parent);
    } else {
      if (typeof prototype == 'undefined') {
        proto = Object.getPrototypeOf(parent);
        child = Object.create(proto);
      }
      else {
        child = Object.create(prototype);
        proto = prototype;
      }
    }

    if (circular) {
      var index = allParents.indexOf(parent);

      if (index != -1) {
        return allChildren[index];
      }
      allParents.push(parent);
      allChildren.push(child);
    }

    if (_instanceof(parent, nativeMap)) {
      parent.forEach(function(value, key) {
        var keyChild = _clone(key, depth - 1);
        var valueChild = _clone(value, depth - 1);
        child.set(keyChild, valueChild);
      });
    }
    if (_instanceof(parent, nativeSet)) {
      parent.forEach(function(value) {
        var entryChild = _clone(value, depth - 1);
        child.add(entryChild);
      });
    }

    for (var i in parent) {
      var attrs;
      if (proto) {
        attrs = Object.getOwnPropertyDescriptor(proto, i);
      }

      if (attrs && attrs.set == null) {
        continue;
      }
      child[i] = _clone(parent[i], depth - 1);
    }

    if (Object.getOwnPropertySymbols) {
      var symbols = Object.getOwnPropertySymbols(parent);
      for (var i = 0; i < symbols.length; i++) {
        // Don't need to worry about cloning a symbol because it is a primitive,
        // like a number or string.
        var symbol = symbols[i];
        var descriptor = Object.getOwnPropertyDescriptor(parent, symbol);
        if (descriptor && !descriptor.enumerable && !includeNonEnumerable) {
          continue;
        }
        child[symbol] = _clone(parent[symbol], depth - 1);
        if (!descriptor.enumerable) {
          Object.defineProperty(child, symbol, {
            enumerable: false
          });
        }
      }
    }

    if (includeNonEnumerable) {
      var allPropertyNames = Object.getOwnPropertyNames(parent);
      for (var i = 0; i < allPropertyNames.length; i++) {
        var propertyName = allPropertyNames[i];
        var descriptor = Object.getOwnPropertyDescriptor(parent, propertyName);
        if (descriptor && descriptor.enumerable) {
          continue;
        }
        child[propertyName] = _clone(parent[propertyName], depth - 1);
        Object.defineProperty(child, propertyName, {
          enumerable: false
        });
      }
    }

    return child;
  }

  return _clone(parent, depth);
}

/**
 * Simple flat clone using prototype, accepts only objects, usefull for property
 * override on FLAT configuration object (no nested props).
 *
 * USE WITH CAUTION! This may not behave as you wish if you do not know how this
 * works.
 */
clone.clonePrototype = function clonePrototype(parent) {
  if (parent === null)
    return null;

  var c = function () {};
  c.prototype = parent;
  return new c();
};

// private utility functions

function __objToStr(o) {
  return Object.prototype.toString.call(o);
}
clone.__objToStr = __objToStr;

function __isDate(o) {
  return typeof o === 'object' && __objToStr(o) === '[object Date]';
}
clone.__isDate = __isDate;

function __isArray(o) {
  return typeof o === 'object' && __objToStr(o) === '[object Array]';
}
clone.__isArray = __isArray;

function __isRegExp(o) {
  return typeof o === 'object' && __objToStr(o) === '[object RegExp]';
}
clone.__isRegExp = __isRegExp;

function __getRegExpFlags(re) {
  var flags = '';
  if (re.global) flags += 'g';
  if (re.ignoreCase) flags += 'i';
  if (re.multiline) flags += 'm';
  return flags;
}
clone.__getRegExpFlags = __getRegExpFlags;

return clone;
})();

if (typeof module === 'object' && module.exports) {
  module.exports = clone;
}


/***/ }),
/* 22 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _emitter = __webpack_require__(8);

var _emitter2 = _interopRequireDefault(_emitter);

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

var _break = __webpack_require__(16);

var _break2 = _interopRequireDefault(_break);

var _code = __webpack_require__(13);

var _code2 = _interopRequireDefault(_code);

var _container = __webpack_require__(25);

var _container2 = _interopRequireDefault(_container);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

function isLine(blot) {
  return blot instanceof _block2.default || blot instanceof _block.BlockEmbed;
}

var Scroll = function (_Parchment$Scroll) {
  _inherits(Scroll, _Parchment$Scroll);

  function Scroll(domNode, config) {
    _classCallCheck(this, Scroll);

    var _this = _possibleConstructorReturn(this, (Scroll.__proto__ || Object.getPrototypeOf(Scroll)).call(this, domNode));

    _this.emitter = config.emitter;
    if (Array.isArray(config.whitelist)) {
      _this.whitelist = config.whitelist.reduce(function (whitelist, format) {
        whitelist[format] = true;
        return whitelist;
      }, {});
    }
    // Some reason fixes composition issues with character languages in Windows/Chrome, Safari
    _this.domNode.addEventListener('DOMNodeInserted', function () {});
    _this.optimize();
    _this.enable();
    return _this;
  }

  _createClass(Scroll, [{
    key: 'batchStart',
    value: function batchStart() {
      this.batch = true;
    }
  }, {
    key: 'batchEnd',
    value: function batchEnd() {
      this.batch = false;
      this.optimize();
    }
  }, {
    key: 'deleteAt',
    value: function deleteAt(index, length) {
      var _line = this.line(index),
          _line2 = _slicedToArray(_line, 2),
          first = _line2[0],
          offset = _line2[1];

      var _line3 = this.line(index + length),
          _line4 = _slicedToArray(_line3, 1),
          last = _line4[0];

      _get(Scroll.prototype.__proto__ || Object.getPrototypeOf(Scroll.prototype), 'deleteAt', this).call(this, index, length);
      if (last != null && first !== last && offset > 0) {
        if (first instanceof _block.BlockEmbed || last instanceof _block.BlockEmbed) {
          this.optimize();
          return;
        }
        if (first instanceof _code2.default) {
          var newlineIndex = first.newlineIndex(first.length(), true);
          if (newlineIndex > -1) {
            first = first.split(newlineIndex + 1);
            if (first === last) {
              this.optimize();
              return;
            }
          }
        } else if (last instanceof _code2.default) {
          var _newlineIndex = last.newlineIndex(0);
          if (_newlineIndex > -1) {
            last.split(_newlineIndex + 1);
          }
        }
        var ref = last.children.head instanceof _break2.default ? null : last.children.head;
        first.moveChildren(last, ref);
        first.remove();
      }
      this.optimize();
    }
  }, {
    key: 'enable',
    value: function enable() {
      var enabled = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;

      this.domNode.setAttribute('contenteditable', enabled);
    }
  }, {
    key: 'formatAt',
    value: function formatAt(index, length, format, value) {
      if (this.whitelist != null && !this.whitelist[format]) return;
      _get(Scroll.prototype.__proto__ || Object.getPrototypeOf(Scroll.prototype), 'formatAt', this).call(this, index, length, format, value);
      this.optimize();
    }
  }, {
    key: 'insertAt',
    value: function insertAt(index, value, def) {
      if (def != null && this.whitelist != null && !this.whitelist[value]) return;
      if (index >= this.length()) {
        if (def == null || _parchment2.default.query(value, _parchment2.default.Scope.BLOCK) == null) {
          var blot = _parchment2.default.create(this.statics.defaultChild);
          this.appendChild(blot);
          if (def == null && value.endsWith('\n')) {
            value = value.slice(0, -1);
          }
          blot.insertAt(0, value, def);
        } else {
          var embed = _parchment2.default.create(value, def);
          this.appendChild(embed);
        }
      } else {
        _get(Scroll.prototype.__proto__ || Object.getPrototypeOf(Scroll.prototype), 'insertAt', this).call(this, index, value, def);
      }
      this.optimize();
    }
  }, {
    key: 'insertBefore',
    value: function insertBefore(blot, ref) {
      if (blot.statics.scope === _parchment2.default.Scope.INLINE_BLOT) {
        var wrapper = _parchment2.default.create(this.statics.defaultChild);
        wrapper.appendChild(blot);
        blot = wrapper;
      }
      _get(Scroll.prototype.__proto__ || Object.getPrototypeOf(Scroll.prototype), 'insertBefore', this).call(this, blot, ref);
    }
  }, {
    key: 'leaf',
    value: function leaf(index) {
      return this.path(index).pop() || [null, -1];
    }
  }, {
    key: 'line',
    value: function line(index) {
      if (index === this.length()) {
        return this.line(index - 1);
      }
      return this.descendant(isLine, index);
    }
  }, {
    key: 'lines',
    value: function lines() {
      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
      var length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : Number.MAX_VALUE;

      var getLines = function getLines(blot, index, length) {
        var lines = [],
            lengthLeft = length;
        blot.children.forEachAt(index, length, function (child, index, length) {
          if (isLine(child)) {
            lines.push(child);
          } else if (child instanceof _parchment2.default.Container) {
            lines = lines.concat(getLines(child, index, lengthLeft));
          }
          lengthLeft -= length;
        });
        return lines;
      };
      return getLines(this, index, length);
    }
  }, {
    key: 'optimize',
    value: function optimize() {
      var mutations = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

      if (this.batch === true) return;
      _get(Scroll.prototype.__proto__ || Object.getPrototypeOf(Scroll.prototype), 'optimize', this).call(this, mutations, context);
      if (mutations.length > 0) {
        this.emitter.emit(_emitter2.default.events.SCROLL_OPTIMIZE, mutations, context);
      }
    }
  }, {
    key: 'path',
    value: function path(index) {
      return _get(Scroll.prototype.__proto__ || Object.getPrototypeOf(Scroll.prototype), 'path', this).call(this, index).slice(1); // Exclude self
    }
  }, {
    key: 'update',
    value: function update(mutations) {
      if (this.batch === true) return;
      var source = _emitter2.default.sources.USER;
      if (typeof mutations === 'string') {
        source = mutations;
      }
      if (!Array.isArray(mutations)) {
        mutations = this.observer.takeRecords();
      }
      if (mutations.length > 0) {
        this.emitter.emit(_emitter2.default.events.SCROLL_BEFORE_UPDATE, source, mutations);
      }
      _get(Scroll.prototype.__proto__ || Object.getPrototypeOf(Scroll.prototype), 'update', this).call(this, mutations.concat([])); // pass copy
      if (mutations.length > 0) {
        this.emitter.emit(_emitter2.default.events.SCROLL_UPDATE, source, mutations);
      }
    }
  }]);

  return Scroll;
}(_parchment2.default.Scroll);

Scroll.blotName = 'scroll';
Scroll.className = 'ql-editor';
Scroll.tagName = 'DIV';
Scroll.defaultChild = 'block';
Scroll.allowedChildren = [_block2.default, _block.BlockEmbed, _container2.default];

exports.default = Scroll;

/***/ }),
/* 23 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.SHORTKEY = exports.default = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _clone = __webpack_require__(21);

var _clone2 = _interopRequireDefault(_clone);

var _deepEqual = __webpack_require__(11);

var _deepEqual2 = _interopRequireDefault(_deepEqual);

var _extend = __webpack_require__(3);

var _extend2 = _interopRequireDefault(_extend);

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _op = __webpack_require__(20);

var _op2 = _interopRequireDefault(_op);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _quill = __webpack_require__(5);

var _quill2 = _interopRequireDefault(_quill);

var _logger = __webpack_require__(10);

var _logger2 = _interopRequireDefault(_logger);

var _module = __webpack_require__(9);

var _module2 = _interopRequireDefault(_module);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var debug = (0, _logger2.default)('quill:keyboard');

var SHORTKEY = /Mac/i.test(navigator.platform) ? 'metaKey' : 'ctrlKey';

var Keyboard = function (_Module) {
  _inherits(Keyboard, _Module);

  _createClass(Keyboard, null, [{
    key: 'match',
    value: function match(evt, binding) {
      binding = normalize(binding);
      if (['altKey', 'ctrlKey', 'metaKey', 'shiftKey'].some(function (key) {
        return !!binding[key] !== evt[key] && binding[key] !== null;
      })) {
        return false;
      }
      return binding.key === (evt.which || evt.keyCode);
    }
  }]);

  function Keyboard(quill, options) {
    _classCallCheck(this, Keyboard);

    var _this = _possibleConstructorReturn(this, (Keyboard.__proto__ || Object.getPrototypeOf(Keyboard)).call(this, quill, options));

    _this.bindings = {};
    Object.keys(_this.options.bindings).forEach(function (name) {
      if (name === 'list autofill' && quill.scroll.whitelist != null && !quill.scroll.whitelist['list']) {
        return;
      }
      if (_this.options.bindings[name]) {
        _this.addBinding(_this.options.bindings[name]);
      }
    });
    _this.addBinding({ key: Keyboard.keys.ENTER, shiftKey: null }, handleEnter);
    _this.addBinding({ key: Keyboard.keys.ENTER, metaKey: null, ctrlKey: null, altKey: null }, function () {});
    if (/Firefox/i.test(navigator.userAgent)) {
      // Need to handle delete and backspace for Firefox in the general case #1171
      _this.addBinding({ key: Keyboard.keys.BACKSPACE }, { collapsed: true }, handleBackspace);
      _this.addBinding({ key: Keyboard.keys.DELETE }, { collapsed: true }, handleDelete);
    } else {
      _this.addBinding({ key: Keyboard.keys.BACKSPACE }, { collapsed: true, prefix: /^.?$/ }, handleBackspace);
      _this.addBinding({ key: Keyboard.keys.DELETE }, { collapsed: true, suffix: /^.?$/ }, handleDelete);
    }
    _this.addBinding({ key: Keyboard.keys.BACKSPACE }, { collapsed: false }, handleDeleteRange);
    _this.addBinding({ key: Keyboard.keys.DELETE }, { collapsed: false }, handleDeleteRange);
    _this.addBinding({ key: Keyboard.keys.BACKSPACE, altKey: null, ctrlKey: null, metaKey: null, shiftKey: null }, { collapsed: true, offset: 0 }, handleBackspace);
    _this.listen();
    return _this;
  }

  _createClass(Keyboard, [{
    key: 'addBinding',
    value: function addBinding(key) {
      var context = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
      var handler = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

      var binding = normalize(key);
      if (binding == null || binding.key == null) {
        return debug.warn('Attempted to add invalid keyboard binding', binding);
      }
      if (typeof context === 'function') {
        context = { handler: context };
      }
      if (typeof handler === 'function') {
        handler = { handler: handler };
      }
      binding = (0, _extend2.default)(binding, context, handler);
      this.bindings[binding.key] = this.bindings[binding.key] || [];
      this.bindings[binding.key].push(binding);
    }
  }, {
    key: 'listen',
    value: function listen() {
      var _this2 = this;

      this.quill.root.addEventListener('keydown', function (evt) {
        if (evt.defaultPrevented) return;
        var which = evt.which || evt.keyCode;
        var bindings = (_this2.bindings[which] || []).filter(function (binding) {
          return Keyboard.match(evt, binding);
        });
        if (bindings.length === 0) return;
        var range = _this2.quill.getSelection();
        if (range == null || !_this2.quill.hasFocus()) return;

        var _quill$getLine = _this2.quill.getLine(range.index),
            _quill$getLine2 = _slicedToArray(_quill$getLine, 2),
            line = _quill$getLine2[0],
            offset = _quill$getLine2[1];

        var _quill$getLeaf = _this2.quill.getLeaf(range.index),
            _quill$getLeaf2 = _slicedToArray(_quill$getLeaf, 2),
            leafStart = _quill$getLeaf2[0],
            offsetStart = _quill$getLeaf2[1];

        var _ref = range.length === 0 ? [leafStart, offsetStart] : _this2.quill.getLeaf(range.index + range.length),
            _ref2 = _slicedToArray(_ref, 2),
            leafEnd = _ref2[0],
            offsetEnd = _ref2[1];

        var prefixText = leafStart instanceof _parchment2.default.Text ? leafStart.value().slice(0, offsetStart) : '';
        var suffixText = leafEnd instanceof _parchment2.default.Text ? leafEnd.value().slice(offsetEnd) : '';
        var curContext = {
          collapsed: range.length === 0,
          empty: range.length === 0 && line.length() <= 1,
          format: _this2.quill.getFormat(range),
          offset: offset,
          prefix: prefixText,
          suffix: suffixText
        };
        var prevented = bindings.some(function (binding) {
          if (binding.collapsed != null && binding.collapsed !== curContext.collapsed) return false;
          if (binding.empty != null && binding.empty !== curContext.empty) return false;
          if (binding.offset != null && binding.offset !== curContext.offset) return false;
          if (Array.isArray(binding.format)) {
            // any format is present
            if (binding.format.every(function (name) {
              return curContext.format[name] == null;
            })) {
              return false;
            }
          } else if (_typeof(binding.format) === 'object') {
            // all formats must match
            if (!Object.keys(binding.format).every(function (name) {
              if (binding.format[name] === true) return curContext.format[name] != null;
              if (binding.format[name] === false) return curContext.format[name] == null;
              return (0, _deepEqual2.default)(binding.format[name], curContext.format[name]);
            })) {
              return false;
            }
          }
          if (binding.prefix != null && !binding.prefix.test(curContext.prefix)) return false;
          if (binding.suffix != null && !binding.suffix.test(curContext.suffix)) return false;
          return binding.handler.call(_this2, range, curContext) !== true;
        });
        if (prevented) {
          evt.preventDefault();
        }
      });
    }
  }]);

  return Keyboard;
}(_module2.default);

Keyboard.keys = {
  BACKSPACE: 8,
  TAB: 9,
  ENTER: 13,
  ESCAPE: 27,
  LEFT: 37,
  UP: 38,
  RIGHT: 39,
  DOWN: 40,
  DELETE: 46
};

Keyboard.DEFAULTS = {
  bindings: {
    'bold': makeFormatHandler('bold'),
    'italic': makeFormatHandler('italic'),
    'underline': makeFormatHandler('underline'),
    'indent': {
      // highlight tab or tab at beginning of list, indent or blockquote
      key: Keyboard.keys.TAB,
      format: ['blockquote', 'indent', 'list'],
      handler: function handler(range, context) {
        if (context.collapsed && context.offset !== 0) return true;
        this.quill.format('indent', '+1', _quill2.default.sources.USER);
      }
    },
    'outdent': {
      key: Keyboard.keys.TAB,
      shiftKey: true,
      format: ['blockquote', 'indent', 'list'],
      // highlight tab or tab at beginning of list, indent or blockquote
      handler: function handler(range, context) {
        if (context.collapsed && context.offset !== 0) return true;
        this.quill.format('indent', '-1', _quill2.default.sources.USER);
      }
    },
    'outdent backspace': {
      key: Keyboard.keys.BACKSPACE,
      collapsed: true,
      shiftKey: null,
      metaKey: null,
      ctrlKey: null,
      altKey: null,
      format: ['indent', 'list'],
      offset: 0,
      handler: function handler(range, context) {
        if (context.format.indent != null) {
          this.quill.format('indent', '-1', _quill2.default.sources.USER);
        } else if (context.format.list != null) {
          this.quill.format('list', false, _quill2.default.sources.USER);
        }
      }
    },
    'indent code-block': makeCodeBlockHandler(true),
    'outdent code-block': makeCodeBlockHandler(false),
    'remove tab': {
      key: Keyboard.keys.TAB,
      shiftKey: true,
      collapsed: true,
      prefix: /\t$/,
      handler: function handler(range) {
        this.quill.deleteText(range.index - 1, 1, _quill2.default.sources.USER);
      }
    },
    'tab': {
      key: Keyboard.keys.TAB,
      handler: function handler(range) {
        this.quill.history.cutoff();
        var delta = new _quillDelta2.default().retain(range.index).delete(range.length).insert('\t');
        this.quill.updateContents(delta, _quill2.default.sources.USER);
        this.quill.history.cutoff();
        this.quill.setSelection(range.index + 1, _quill2.default.sources.SILENT);
      }
    },
    'list empty enter': {
      key: Keyboard.keys.ENTER,
      collapsed: true,
      format: ['list'],
      empty: true,
      handler: function handler(range, context) {
        this.quill.format('list', false, _quill2.default.sources.USER);
        if (context.format.indent) {
          this.quill.format('indent', false, _quill2.default.sources.USER);
        }
      }
    },
    'checklist enter': {
      key: Keyboard.keys.ENTER,
      collapsed: true,
      format: { list: 'checked' },
      handler: function handler(range) {
        var _quill$getLine3 = this.quill.getLine(range.index),
            _quill$getLine4 = _slicedToArray(_quill$getLine3, 2),
            line = _quill$getLine4[0],
            offset = _quill$getLine4[1];

        var formats = (0, _extend2.default)({}, line.formats(), { list: 'checked' });
        var delta = new _quillDelta2.default().retain(range.index).insert('\n', formats).retain(line.length() - offset - 1).retain(1, { list: 'unchecked' });
        this.quill.updateContents(delta, _quill2.default.sources.USER);
        this.quill.setSelection(range.index + 1, _quill2.default.sources.SILENT);
        this.quill.scrollIntoView();
      }
    },
    'header enter': {
      key: Keyboard.keys.ENTER,
      collapsed: true,
      format: ['header'],
      suffix: /^$/,
      handler: function handler(range, context) {
        var _quill$getLine5 = this.quill.getLine(range.index),
            _quill$getLine6 = _slicedToArray(_quill$getLine5, 2),
            line = _quill$getLine6[0],
            offset = _quill$getLine6[1];

        var delta = new _quillDelta2.default().retain(range.index).insert('\n', context.format).retain(line.length() - offset - 1).retain(1, { header: null });
        this.quill.updateContents(delta, _quill2.default.sources.USER);
        this.quill.setSelection(range.index + 1, _quill2.default.sources.SILENT);
        this.quill.scrollIntoView();
      }
    },
    'list autofill': {
      key: ' ',
      collapsed: true,
      format: { list: false },
      prefix: /^\s*?(\d+\.|-|\*|\[ ?\]|\[x\])$/,
      handler: function handler(range, context) {
        var length = context.prefix.length;

        var _quill$getLine7 = this.quill.getLine(range.index),
            _quill$getLine8 = _slicedToArray(_quill$getLine7, 2),
            line = _quill$getLine8[0],
            offset = _quill$getLine8[1];

        if (offset > length) return true;
        var value = void 0;
        switch (context.prefix.trim()) {
          case '[]':case '[ ]':
            value = 'unchecked';
            break;
          case '[x]':
            value = 'checked';
            break;
          case '-':case '*':
            value = 'bullet';
            break;
          default:
            value = 'ordered';
        }
        this.quill.insertText(range.index, ' ', _quill2.default.sources.USER);
        this.quill.history.cutoff();
        var delta = new _quillDelta2.default().retain(range.index - offset).delete(length + 1).retain(line.length() - 2 - offset).retain(1, { list: value });
        this.quill.updateContents(delta, _quill2.default.sources.USER);
        this.quill.history.cutoff();
        this.quill.setSelection(range.index - length, _quill2.default.sources.SILENT);
      }
    },
    'code exit': {
      key: Keyboard.keys.ENTER,
      collapsed: true,
      format: ['code-block'],
      prefix: /\n\n$/,
      suffix: /^\s+$/,
      handler: function handler(range) {
        var _quill$getLine9 = this.quill.getLine(range.index),
            _quill$getLine10 = _slicedToArray(_quill$getLine9, 2),
            line = _quill$getLine10[0],
            offset = _quill$getLine10[1];

        var delta = new _quillDelta2.default().retain(range.index + line.length() - offset - 2).retain(1, { 'code-block': null }).delete(1);
        this.quill.updateContents(delta, _quill2.default.sources.USER);
      }
    },
    'embed left': makeEmbedArrowHandler(Keyboard.keys.LEFT, false),
    'embed left shift': makeEmbedArrowHandler(Keyboard.keys.LEFT, true),
    'embed right': makeEmbedArrowHandler(Keyboard.keys.RIGHT, false),
    'embed right shift': makeEmbedArrowHandler(Keyboard.keys.RIGHT, true)
  }
};

function makeEmbedArrowHandler(key, shiftKey) {
  var _ref3;

  var where = key === Keyboard.keys.LEFT ? 'prefix' : 'suffix';
  return _ref3 = {
    key: key,
    shiftKey: shiftKey,
    altKey: null
  }, _defineProperty(_ref3, where, /^$/), _defineProperty(_ref3, 'handler', function handler(range) {
    var index = range.index;
    if (key === Keyboard.keys.RIGHT) {
      index += range.length + 1;
    }

    var _quill$getLeaf3 = this.quill.getLeaf(index),
        _quill$getLeaf4 = _slicedToArray(_quill$getLeaf3, 1),
        leaf = _quill$getLeaf4[0];

    if (!(leaf instanceof _parchment2.default.Embed)) return true;
    if (key === Keyboard.keys.LEFT) {
      if (shiftKey) {
        this.quill.setSelection(range.index - 1, range.length + 1, _quill2.default.sources.USER);
      } else {
        this.quill.setSelection(range.index - 1, _quill2.default.sources.USER);
      }
    } else {
      if (shiftKey) {
        this.quill.setSelection(range.index, range.length + 1, _quill2.default.sources.USER);
      } else {
        this.quill.setSelection(range.index + range.length + 1, _quill2.default.sources.USER);
      }
    }
    return false;
  }), _ref3;
}

function handleBackspace(range, context) {
  if (range.index === 0 || this.quill.getLength() <= 1) return;

  var _quill$getLine11 = this.quill.getLine(range.index),
      _quill$getLine12 = _slicedToArray(_quill$getLine11, 1),
      line = _quill$getLine12[0];

  var formats = {};
  if (context.offset === 0) {
    var _quill$getLine13 = this.quill.getLine(range.index - 1),
        _quill$getLine14 = _slicedToArray(_quill$getLine13, 1),
        prev = _quill$getLine14[0];

    if (prev != null && prev.length() > 1) {
      var curFormats = line.formats();
      var prevFormats = this.quill.getFormat(range.index - 1, 1);
      formats = _op2.default.attributes.diff(curFormats, prevFormats) || {};
    }
  }
  // Check for astral symbols
  var length = /[\uD800-\uDBFF][\uDC00-\uDFFF]$/.test(context.prefix) ? 2 : 1;
  this.quill.deleteText(range.index - length, length, _quill2.default.sources.USER);
  if (Object.keys(formats).length > 0) {
    this.quill.formatLine(range.index - length, length, formats, _quill2.default.sources.USER);
  }
  this.quill.focus();
}

function handleDelete(range, context) {
  // Check for astral symbols
  var length = /^[\uD800-\uDBFF][\uDC00-\uDFFF]/.test(context.suffix) ? 2 : 1;
  if (range.index >= this.quill.getLength() - length) return;
  var formats = {},
      nextLength = 0;

  var _quill$getLine15 = this.quill.getLine(range.index),
      _quill$getLine16 = _slicedToArray(_quill$getLine15, 1),
      line = _quill$getLine16[0];

  if (context.offset >= line.length() - 1) {
    var _quill$getLine17 = this.quill.getLine(range.index + 1),
        _quill$getLine18 = _slicedToArray(_quill$getLine17, 1),
        next = _quill$getLine18[0];

    if (next) {
      var curFormats = line.formats();
      var nextFormats = this.quill.getFormat(range.index, 1);
      formats = _op2.default.attributes.diff(curFormats, nextFormats) || {};
      nextLength = next.length();
    }
  }
  this.quill.deleteText(range.index, length, _quill2.default.sources.USER);
  if (Object.keys(formats).length > 0) {
    this.quill.formatLine(range.index + nextLength - 1, length, formats, _quill2.default.sources.USER);
  }
}

function handleDeleteRange(range) {
  var lines = this.quill.getLines(range);
  var formats = {};
  if (lines.length > 1) {
    var firstFormats = lines[0].formats();
    var lastFormats = lines[lines.length - 1].formats();
    formats = _op2.default.attributes.diff(lastFormats, firstFormats) || {};
  }
  this.quill.deleteText(range, _quill2.default.sources.USER);
  if (Object.keys(formats).length > 0) {
    this.quill.formatLine(range.index, 1, formats, _quill2.default.sources.USER);
  }
  this.quill.setSelection(range.index, _quill2.default.sources.SILENT);
  this.quill.focus();
}

function handleEnter(range, context) {
  var _this3 = this;

  if (range.length > 0) {
    this.quill.scroll.deleteAt(range.index, range.length); // So we do not trigger text-change
  }
  var lineFormats = Object.keys(context.format).reduce(function (lineFormats, format) {
    if (_parchment2.default.query(format, _parchment2.default.Scope.BLOCK) && !Array.isArray(context.format[format])) {
      lineFormats[format] = context.format[format];
    }
    return lineFormats;
  }, {});
  this.quill.insertText(range.index, '\n', lineFormats, _quill2.default.sources.USER);
  // Earlier scroll.deleteAt might have messed up our selection,
  // so insertText's built in selection preservation is not reliable
  this.quill.setSelection(range.index + 1, _quill2.default.sources.SILENT);
  this.quill.focus();
  Object.keys(context.format).forEach(function (name) {
    if (lineFormats[name] != null) return;
    if (Array.isArray(context.format[name])) return;
    if (name === 'link') return;
    _this3.quill.format(name, context.format[name], _quill2.default.sources.USER);
  });
}

function makeCodeBlockHandler(indent) {
  return {
    key: Keyboard.keys.TAB,
    shiftKey: !indent,
    format: { 'code-block': true },
    handler: function handler(range) {
      var CodeBlock = _parchment2.default.query('code-block');
      var index = range.index,
          length = range.length;

      var _quill$scroll$descend = this.quill.scroll.descendant(CodeBlock, index),
          _quill$scroll$descend2 = _slicedToArray(_quill$scroll$descend, 2),
          block = _quill$scroll$descend2[0],
          offset = _quill$scroll$descend2[1];

      if (block == null) return;
      var scrollIndex = this.quill.getIndex(block);
      var start = block.newlineIndex(offset, true) + 1;
      var end = block.newlineIndex(scrollIndex + offset + length);
      var lines = block.domNode.textContent.slice(start, end).split('\n');
      offset = 0;
      lines.forEach(function (line, i) {
        if (indent) {
          block.insertAt(start + offset, CodeBlock.TAB);
          offset += CodeBlock.TAB.length;
          if (i === 0) {
            index += CodeBlock.TAB.length;
          } else {
            length += CodeBlock.TAB.length;
          }
        } else if (line.startsWith(CodeBlock.TAB)) {
          block.deleteAt(start + offset, CodeBlock.TAB.length);
          offset -= CodeBlock.TAB.length;
          if (i === 0) {
            index -= CodeBlock.TAB.length;
          } else {
            length -= CodeBlock.TAB.length;
          }
        }
        offset += line.length + 1;
      });
      this.quill.update(_quill2.default.sources.USER);
      this.quill.setSelection(index, length, _quill2.default.sources.SILENT);
    }
  };
}

function makeFormatHandler(format) {
  return {
    key: format[0].toUpperCase(),
    shortKey: true,
    handler: function handler(range, context) {
      this.quill.format(format, !context.format[format], _quill2.default.sources.USER);
    }
  };
}

function normalize(binding) {
  if (typeof binding === 'string' || typeof binding === 'number') {
    return normalize({ key: binding });
  }
  if ((typeof binding === 'undefined' ? 'undefined' : _typeof(binding)) === 'object') {
    binding = (0, _clone2.default)(binding, false);
  }
  if (typeof binding.key === 'string') {
    if (Keyboard.keys[binding.key.toUpperCase()] != null) {
      binding.key = Keyboard.keys[binding.key.toUpperCase()];
    } else if (binding.key.length === 1) {
      binding.key = binding.key.toUpperCase().charCodeAt(0);
    } else {
      return null;
    }
  }
  if (binding.shortKey) {
    binding[SHORTKEY] = binding.shortKey;
    delete binding.shortKey;
  }
  return binding;
}

exports.default = Keyboard;
exports.SHORTKEY = SHORTKEY;

/***/ }),
/* 24 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _text = __webpack_require__(7);

var _text2 = _interopRequireDefault(_text);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Cursor = function (_Parchment$Embed) {
  _inherits(Cursor, _Parchment$Embed);

  _createClass(Cursor, null, [{
    key: 'value',
    value: function value() {
      return undefined;
    }
  }]);

  function Cursor(domNode, selection) {
    _classCallCheck(this, Cursor);

    var _this = _possibleConstructorReturn(this, (Cursor.__proto__ || Object.getPrototypeOf(Cursor)).call(this, domNode));

    _this.selection = selection;
    _this.textNode = document.createTextNode(Cursor.CONTENTS);
    _this.domNode.appendChild(_this.textNode);
    _this._length = 0;
    return _this;
  }

  _createClass(Cursor, [{
    key: 'detach',
    value: function detach() {
      // super.detach() will also clear domNode.__blot
      if (this.parent != null) this.parent.removeChild(this);
    }
  }, {
    key: 'format',
    value: function format(name, value) {
      if (this._length !== 0) {
        return _get(Cursor.prototype.__proto__ || Object.getPrototypeOf(Cursor.prototype), 'format', this).call(this, name, value);
      }
      var target = this,
          index = 0;
      while (target != null && target.statics.scope !== _parchment2.default.Scope.BLOCK_BLOT) {
        index += target.offset(target.parent);
        target = target.parent;
      }
      if (target != null) {
        this._length = Cursor.CONTENTS.length;
        target.optimize();
        target.formatAt(index, Cursor.CONTENTS.length, name, value);
        this._length = 0;
      }
    }
  }, {
    key: 'index',
    value: function index(node, offset) {
      if (node === this.textNode) return 0;
      return _get(Cursor.prototype.__proto__ || Object.getPrototypeOf(Cursor.prototype), 'index', this).call(this, node, offset);
    }
  }, {
    key: 'length',
    value: function length() {
      return this._length;
    }
  }, {
    key: 'position',
    value: function position() {
      return [this.textNode, this.textNode.data.length];
    }
  }, {
    key: 'remove',
    value: function remove() {
      _get(Cursor.prototype.__proto__ || Object.getPrototypeOf(Cursor.prototype), 'remove', this).call(this);
      this.parent = null;
    }
  }, {
    key: 'restore',
    value: function restore() {
      if (this.selection.composing || this.parent == null) return;
      var textNode = this.textNode;
      var range = this.selection.getNativeRange();
      var restoreText = void 0,
          start = void 0,
          end = void 0;
      if (range != null && range.start.node === textNode && range.end.node === textNode) {
        var _ref = [textNode, range.start.offset, range.end.offset];
        restoreText = _ref[0];
        start = _ref[1];
        end = _ref[2];
      }
      // Link format will insert text outside of anchor tag
      while (this.domNode.lastChild != null && this.domNode.lastChild !== this.textNode) {
        this.domNode.parentNode.insertBefore(this.domNode.lastChild, this.domNode);
      }
      if (this.textNode.data !== Cursor.CONTENTS) {
        var text = this.textNode.data.split(Cursor.CONTENTS).join('');
        if (this.next instanceof _text2.default) {
          restoreText = this.next.domNode;
          this.next.insertAt(0, text);
          this.textNode.data = Cursor.CONTENTS;
        } else {
          this.textNode.data = text;
          this.parent.insertBefore(_parchment2.default.create(this.textNode), this);
          this.textNode = document.createTextNode(Cursor.CONTENTS);
          this.domNode.appendChild(this.textNode);
        }
      }
      this.remove();
      if (start != null) {
        var _map = [start, end].map(function (offset) {
          return Math.max(0, Math.min(restoreText.data.length, offset - 1));
        });

        var _map2 = _slicedToArray(_map, 2);

        start = _map2[0];
        end = _map2[1];

        return {
          startNode: restoreText,
          startOffset: start,
          endNode: restoreText,
          endOffset: end
        };
      }
    }
  }, {
    key: 'update',
    value: function update(mutations, context) {
      var _this2 = this;

      if (mutations.some(function (mutation) {
        return mutation.type === 'characterData' && mutation.target === _this2.textNode;
      })) {
        var range = this.restore();
        if (range) context.range = range;
      }
    }
  }, {
    key: 'value',
    value: function value() {
      return '';
    }
  }]);

  return Cursor;
}(_parchment2.default.Embed);

Cursor.blotName = 'cursor';
Cursor.className = 'ql-cursor';
Cursor.tagName = 'span';
Cursor.CONTENTS = '\uFEFF'; // Zero width no break space


exports.default = Cursor;

/***/ }),
/* 25 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Container = function (_Parchment$Container) {
  _inherits(Container, _Parchment$Container);

  function Container() {
    _classCallCheck(this, Container);

    return _possibleConstructorReturn(this, (Container.__proto__ || Object.getPrototypeOf(Container)).apply(this, arguments));
  }

  return Container;
}(_parchment2.default.Container);

Container.allowedChildren = [_block2.default, _block.BlockEmbed, Container];

exports.default = Container;

/***/ }),
/* 26 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.ColorStyle = exports.ColorClass = exports.ColorAttributor = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var ColorAttributor = function (_Parchment$Attributor) {
  _inherits(ColorAttributor, _Parchment$Attributor);

  function ColorAttributor() {
    _classCallCheck(this, ColorAttributor);

    return _possibleConstructorReturn(this, (ColorAttributor.__proto__ || Object.getPrototypeOf(ColorAttributor)).apply(this, arguments));
  }

  _createClass(ColorAttributor, [{
    key: 'value',
    value: function value(domNode) {
      var value = _get(ColorAttributor.prototype.__proto__ || Object.getPrototypeOf(ColorAttributor.prototype), 'value', this).call(this, domNode);
      if (!value.startsWith('rgb(')) return value;
      value = value.replace(/^[^\d]+/, '').replace(/[^\d]+$/, '');
      return '#' + value.split(',').map(function (component) {
        return ('00' + parseInt(component).toString(16)).slice(-2);
      }).join('');
    }
  }]);

  return ColorAttributor;
}(_parchment2.default.Attributor.Style);

var ColorClass = new _parchment2.default.Attributor.Class('color', 'ql-color', {
  scope: _parchment2.default.Scope.INLINE
});
var ColorStyle = new ColorAttributor('color', 'color', {
  scope: _parchment2.default.Scope.INLINE
});

exports.ColorAttributor = ColorAttributor;
exports.ColorClass = ColorClass;
exports.ColorStyle = ColorStyle;

/***/ }),
/* 27 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.sanitize = exports.default = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Link = function (_Inline) {
  _inherits(Link, _Inline);

  function Link() {
    _classCallCheck(this, Link);

    return _possibleConstructorReturn(this, (Link.__proto__ || Object.getPrototypeOf(Link)).apply(this, arguments));
  }

  _createClass(Link, [{
    key: 'format',
    value: function format(name, value) {
      if (name !== this.statics.blotName || !value) return _get(Link.prototype.__proto__ || Object.getPrototypeOf(Link.prototype), 'format', this).call(this, name, value);
      value = this.constructor.sanitize(value);
      this.domNode.setAttribute('href', value);
    }
  }], [{
    key: 'create',
    value: function create(value) {
      var node = _get(Link.__proto__ || Object.getPrototypeOf(Link), 'create', this).call(this, value);
      value = this.sanitize(value);
      node.setAttribute('href', value);
      node.setAttribute('rel', 'noopener noreferrer');
      node.setAttribute('target', '_blank');
      return node;
    }
  }, {
    key: 'formats',
    value: function formats(domNode) {
      return domNode.getAttribute('href');
    }
  }, {
    key: 'sanitize',
    value: function sanitize(url) {
      return _sanitize(url, this.PROTOCOL_WHITELIST) ? url : this.SANITIZED_URL;
    }
  }]);

  return Link;
}(_inline2.default);

Link.blotName = 'link';
Link.tagName = 'A';
Link.SANITIZED_URL = 'about:blank';
Link.PROTOCOL_WHITELIST = ['http', 'https', 'mailto', 'tel'];

function _sanitize(url, protocols) {
  var anchor = document.createElement('a');
  anchor.href = url;
  var protocol = anchor.href.slice(0, anchor.href.indexOf(':'));
  return protocols.indexOf(protocol) > -1;
}

exports.default = Link;
exports.sanitize = _sanitize;

/***/ }),
/* 28 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _keyboard = __webpack_require__(23);

var _keyboard2 = _interopRequireDefault(_keyboard);

var _dropdown = __webpack_require__(107);

var _dropdown2 = _interopRequireDefault(_dropdown);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var optionsCounter = 0;

function toggleAriaAttribute(element, attribute) {
  element.setAttribute(attribute, !(element.getAttribute(attribute) === 'true'));
}

var Picker = function () {
  function Picker(select) {
    var _this = this;

    _classCallCheck(this, Picker);

    this.select = select;
    this.container = document.createElement('span');
    this.buildPicker();
    this.select.style.display = 'none';
    this.select.parentNode.insertBefore(this.container, this.select);

    this.label.addEventListener('mousedown', function () {
      _this.togglePicker();
    });
    this.label.addEventListener('keydown', function (event) {
      switch (event.keyCode) {
        // Allows the "Enter" key to open the picker
        case _keyboard2.default.keys.ENTER:
          _this.togglePicker();
          break;

        // Allows the "Escape" key to close the picker
        case _keyboard2.default.keys.ESCAPE:
          _this.escape();
          event.preventDefault();
          break;
        default:
      }
    });
    this.select.addEventListener('change', this.update.bind(this));
  }

  _createClass(Picker, [{
    key: 'togglePicker',
    value: function togglePicker() {
      this.container.classList.toggle('ql-expanded');
      // Toggle aria-expanded and aria-hidden to make the picker accessible
      toggleAriaAttribute(this.label, 'aria-expanded');
      toggleAriaAttribute(this.options, 'aria-hidden');
    }
  }, {
    key: 'buildItem',
    value: function buildItem(option) {
      var _this2 = this;

      var item = document.createElement('span');
      item.tabIndex = '0';
      item.setAttribute('role', 'button');

      item.classList.add('ql-picker-item');
      if (option.hasAttribute('value')) {
        item.setAttribute('data-value', option.getAttribute('value'));
      }
      if (option.textContent) {
        item.setAttribute('data-label', option.textContent);
      }
      item.addEventListener('click', function () {
        _this2.selectItem(item, true);
      });
      item.addEventListener('keydown', function (event) {
        switch (event.keyCode) {
          // Allows the "Enter" key to select an item
          case _keyboard2.default.keys.ENTER:
            _this2.selectItem(item, true);
            event.preventDefault();
            break;

          // Allows the "Escape" key to close the picker
          case _keyboard2.default.keys.ESCAPE:
            _this2.escape();
            event.preventDefault();
            break;
          default:
        }
      });

      return item;
    }
  }, {
    key: 'buildLabel',
    value: function buildLabel() {
      var label = document.createElement('span');
      label.classList.add('ql-picker-label');
      label.innerHTML = _dropdown2.default;
      label.tabIndex = '0';
      label.setAttribute('role', 'button');
      label.setAttribute('aria-expanded', 'false');
      this.container.appendChild(label);
      return label;
    }
  }, {
    key: 'buildOptions',
    value: function buildOptions() {
      var _this3 = this;

      var options = document.createElement('span');
      options.classList.add('ql-picker-options');

      // Don't want screen readers to read this until options are visible
      options.setAttribute('aria-hidden', 'true');
      options.tabIndex = '-1';

      // Need a unique id for aria-controls
      options.id = 'ql-picker-options-' + optionsCounter;
      optionsCounter += 1;
      this.label.setAttribute('aria-controls', options.id);

      this.options = options;

      [].slice.call(this.select.options).forEach(function (option) {
        var item = _this3.buildItem(option);
        options.appendChild(item);
        if (option.selected === true) {
          _this3.selectItem(item);
        }
      });
      this.container.appendChild(options);
    }
  }, {
    key: 'buildPicker',
    value: function buildPicker() {
      var _this4 = this;

      [].slice.call(this.select.attributes).forEach(function (item) {
        _this4.container.setAttribute(item.name, item.value);
      });
      this.container.classList.add('ql-picker');
      this.label = this.buildLabel();
      this.buildOptions();
    }
  }, {
    key: 'escape',
    value: function escape() {
      var _this5 = this;

      // Close menu and return focus to trigger label
      this.close();
      // Need setTimeout for accessibility to ensure that the browser executes
      // focus on the next process thread and after any DOM content changes
      setTimeout(function () {
        return _this5.label.focus();
      }, 1);
    }
  }, {
    key: 'close',
    value: function close() {
      this.container.classList.remove('ql-expanded');
      this.label.setAttribute('aria-expanded', 'false');
      this.options.setAttribute('aria-hidden', 'true');
    }
  }, {
    key: 'selectItem',
    value: function selectItem(item) {
      var trigger = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

      var selected = this.container.querySelector('.ql-selected');
      if (item === selected) return;
      if (selected != null) {
        selected.classList.remove('ql-selected');
      }
      if (item == null) return;
      item.classList.add('ql-selected');
      this.select.selectedIndex = [].indexOf.call(item.parentNode.children, item);
      if (item.hasAttribute('data-value')) {
        this.label.setAttribute('data-value', item.getAttribute('data-value'));
      } else {
        this.label.removeAttribute('data-value');
      }
      if (item.hasAttribute('data-label')) {
        this.label.setAttribute('data-label', item.getAttribute('data-label'));
      } else {
        this.label.removeAttribute('data-label');
      }
      if (trigger) {
        if (typeof Event === 'function') {
          this.select.dispatchEvent(new Event('change'));
        } else if ((typeof Event === 'undefined' ? 'undefined' : _typeof(Event)) === 'object') {
          // IE11
          var event = document.createEvent('Event');
          event.initEvent('change', true, true);
          this.select.dispatchEvent(event);
        }
        this.close();
      }
    }
  }, {
    key: 'update',
    value: function update() {
      var option = void 0;
      if (this.select.selectedIndex > -1) {
        var item = this.container.querySelector('.ql-picker-options').children[this.select.selectedIndex];
        option = this.select.options[this.select.selectedIndex];
        this.selectItem(item);
      } else {
        this.selectItem(null);
      }
      var isActive = option != null && option !== this.select.querySelector('option[selected]');
      this.label.classList.toggle('ql-active', isActive);
    }
  }]);

  return Picker;
}();

exports.default = Picker;

/***/ }),
/* 29 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _quill = __webpack_require__(5);

var _quill2 = _interopRequireDefault(_quill);

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

var _break = __webpack_require__(16);

var _break2 = _interopRequireDefault(_break);

var _container = __webpack_require__(25);

var _container2 = _interopRequireDefault(_container);

var _cursor = __webpack_require__(24);

var _cursor2 = _interopRequireDefault(_cursor);

var _embed = __webpack_require__(35);

var _embed2 = _interopRequireDefault(_embed);

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

var _scroll = __webpack_require__(22);

var _scroll2 = _interopRequireDefault(_scroll);

var _text = __webpack_require__(7);

var _text2 = _interopRequireDefault(_text);

var _clipboard = __webpack_require__(55);

var _clipboard2 = _interopRequireDefault(_clipboard);

var _history = __webpack_require__(42);

var _history2 = _interopRequireDefault(_history);

var _keyboard = __webpack_require__(23);

var _keyboard2 = _interopRequireDefault(_keyboard);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

_quill2.default.register({
  'blots/block': _block2.default,
  'blots/block/embed': _block.BlockEmbed,
  'blots/break': _break2.default,
  'blots/container': _container2.default,
  'blots/cursor': _cursor2.default,
  'blots/embed': _embed2.default,
  'blots/inline': _inline2.default,
  'blots/scroll': _scroll2.default,
  'blots/text': _text2.default,

  'modules/clipboard': _clipboard2.default,
  'modules/history': _history2.default,
  'modules/keyboard': _keyboard2.default
});

_parchment2.default.register(_block2.default, _break2.default, _cursor2.default, _inline2.default, _scroll2.default, _text2.default);

exports.default = _quill2.default;

/***/ }),
/* 30 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
var Registry = __webpack_require__(1);
var ShadowBlot = /** @class */ (function () {
    function ShadowBlot(domNode) {
        this.domNode = domNode;
        // @ts-ignore
        this.domNode[Registry.DATA_KEY] = { blot: this };
    }
    Object.defineProperty(ShadowBlot.prototype, "statics", {
        // Hack for accessing inherited static methods
        get: function () {
            return this.constructor;
        },
        enumerable: true,
        configurable: true
    });
    ShadowBlot.create = function (value) {
        if (this.tagName == null) {
            throw new Registry.ParchmentError('Blot definition missing tagName');
        }
        var node;
        if (Array.isArray(this.tagName)) {
            if (typeof value === 'string') {
                value = value.toUpperCase();
                if (parseInt(value).toString() === value) {
                    value = parseInt(value);
                }
            }
            if (typeof value === 'number') {
                node = document.createElement(this.tagName[value - 1]);
            }
            else if (this.tagName.indexOf(value) > -1) {
                node = document.createElement(value);
            }
            else {
                node = document.createElement(this.tagName[0]);
            }
        }
        else {
            node = document.createElement(this.tagName);
        }
        if (this.className) {
            node.classList.add(this.className);
        }
        return node;
    };
    ShadowBlot.prototype.attach = function () {
        if (this.parent != null) {
            this.scroll = this.parent.scroll;
        }
    };
    ShadowBlot.prototype.clone = function () {
        var domNode = this.domNode.cloneNode(false);
        return Registry.create(domNode);
    };
    ShadowBlot.prototype.detach = function () {
        if (this.parent != null)
            this.parent.removeChild(this);
        // @ts-ignore
        delete this.domNode[Registry.DATA_KEY];
    };
    ShadowBlot.prototype.deleteAt = function (index, length) {
        var blot = this.isolate(index, length);
        blot.remove();
    };
    ShadowBlot.prototype.formatAt = function (index, length, name, value) {
        var blot = this.isolate(index, length);
        if (Registry.query(name, Registry.Scope.BLOT) != null && value) {
            blot.wrap(name, value);
        }
        else if (Registry.query(name, Registry.Scope.ATTRIBUTE) != null) {
            var parent = Registry.create(this.statics.scope);
            blot.wrap(parent);
            parent.format(name, value);
        }
    };
    ShadowBlot.prototype.insertAt = function (index, value, def) {
        var blot = def == null ? Registry.create('text', value) : Registry.create(value, def);
        var ref = this.split(index);
        this.parent.insertBefore(blot, ref);
    };
    ShadowBlot.prototype.insertInto = function (parentBlot, refBlot) {
        if (refBlot === void 0) { refBlot = null; }
        if (this.parent != null) {
            this.parent.children.remove(this);
        }
        var refDomNode = null;
        parentBlot.children.insertBefore(this, refBlot);
        if (refBlot != null) {
            refDomNode = refBlot.domNode;
        }
        if (this.domNode.parentNode != parentBlot.domNode ||
            this.domNode.nextSibling != refDomNode) {
            parentBlot.domNode.insertBefore(this.domNode, refDomNode);
        }
        this.parent = parentBlot;
        this.attach();
    };
    ShadowBlot.prototype.isolate = function (index, length) {
        var target = this.split(index);
        target.split(length);
        return target;
    };
    ShadowBlot.prototype.length = function () {
        return 1;
    };
    ShadowBlot.prototype.offset = function (root) {
        if (root === void 0) { root = this.parent; }
        if (this.parent == null || this == root)
            return 0;
        return this.parent.children.offset(this) + this.parent.offset(root);
    };
    ShadowBlot.prototype.optimize = function (context) {
        // TODO clean up once we use WeakMap
        // @ts-ignore
        if (this.domNode[Registry.DATA_KEY] != null) {
            // @ts-ignore
            delete this.domNode[Registry.DATA_KEY].mutations;
        }
    };
    ShadowBlot.prototype.remove = function () {
        if (this.domNode.parentNode != null) {
            this.domNode.parentNode.removeChild(this.domNode);
        }
        this.detach();
    };
    ShadowBlot.prototype.replace = function (target) {
        if (target.parent == null)
            return;
        target.parent.insertBefore(this, target.next);
        target.remove();
    };
    ShadowBlot.prototype.replaceWith = function (name, value) {
        var replacement = typeof name === 'string' ? Registry.create(name, value) : name;
        replacement.replace(this);
        return replacement;
    };
    ShadowBlot.prototype.split = function (index, force) {
        return index === 0 ? this : this.next;
    };
    ShadowBlot.prototype.update = function (mutations, context) {
        // Nothing to do by default
    };
    ShadowBlot.prototype.wrap = function (name, value) {
        var wrapper = typeof name === 'string' ? Registry.create(name, value) : name;
        if (this.parent != null) {
            this.parent.insertBefore(wrapper, this.next);
        }
        wrapper.appendChild(this);
        return wrapper;
    };
    ShadowBlot.blotName = 'abstract';
    return ShadowBlot;
}());
exports.default = ShadowBlot;


/***/ }),
/* 31 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
var attributor_1 = __webpack_require__(12);
var class_1 = __webpack_require__(32);
var style_1 = __webpack_require__(33);
var Registry = __webpack_require__(1);
var AttributorStore = /** @class */ (function () {
    function AttributorStore(domNode) {
        this.attributes = {};
        this.domNode = domNode;
        this.build();
    }
    AttributorStore.prototype.attribute = function (attribute, value) {
        // verb
        if (value) {
            if (attribute.add(this.domNode, value)) {
                if (attribute.value(this.domNode) != null) {
                    this.attributes[attribute.attrName] = attribute;
                }
                else {
                    delete this.attributes[attribute.attrName];
                }
            }
        }
        else {
            attribute.remove(this.domNode);
            delete this.attributes[attribute.attrName];
        }
    };
    AttributorStore.prototype.build = function () {
        var _this = this;
        this.attributes = {};
        var attributes = attributor_1.default.keys(this.domNode);
        var classes = class_1.default.keys(this.domNode);
        var styles = style_1.default.keys(this.domNode);
        attributes
            .concat(classes)
            .concat(styles)
            .forEach(function (name) {
            var attr = Registry.query(name, Registry.Scope.ATTRIBUTE);
            if (attr instanceof attributor_1.default) {
                _this.attributes[attr.attrName] = attr;
            }
        });
    };
    AttributorStore.prototype.copy = function (target) {
        var _this = this;
        Object.keys(this.attributes).forEach(function (key) {
            var value = _this.attributes[key].value(_this.domNode);
            target.format(key, value);
        });
    };
    AttributorStore.prototype.move = function (target) {
        var _this = this;
        this.copy(target);
        Object.keys(this.attributes).forEach(function (key) {
            _this.attributes[key].remove(_this.domNode);
        });
        this.attributes = {};
    };
    AttributorStore.prototype.values = function () {
        var _this = this;
        return Object.keys(this.attributes).reduce(function (attributes, name) {
            attributes[name] = _this.attributes[name].value(_this.domNode);
            return attributes;
        }, {});
    };
    return AttributorStore;
}());
exports.default = AttributorStore;


/***/ }),
/* 32 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var attributor_1 = __webpack_require__(12);
function match(node, prefix) {
    var className = node.getAttribute('class') || '';
    return className.split(/\s+/).filter(function (name) {
        return name.indexOf(prefix + "-") === 0;
    });
}
var ClassAttributor = /** @class */ (function (_super) {
    __extends(ClassAttributor, _super);
    function ClassAttributor() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    ClassAttributor.keys = function (node) {
        return (node.getAttribute('class') || '').split(/\s+/).map(function (name) {
            return name
                .split('-')
                .slice(0, -1)
                .join('-');
        });
    };
    ClassAttributor.prototype.add = function (node, value) {
        if (!this.canAdd(node, value))
            return false;
        this.remove(node);
        node.classList.add(this.keyName + "-" + value);
        return true;
    };
    ClassAttributor.prototype.remove = function (node) {
        var matches = match(node, this.keyName);
        matches.forEach(function (name) {
            node.classList.remove(name);
        });
        if (node.classList.length === 0) {
            node.removeAttribute('class');
        }
    };
    ClassAttributor.prototype.value = function (node) {
        var result = match(node, this.keyName)[0] || '';
        var value = result.slice(this.keyName.length + 1); // +1 for hyphen
        return this.canAdd(node, value) ? value : '';
    };
    return ClassAttributor;
}(attributor_1.default));
exports.default = ClassAttributor;


/***/ }),
/* 33 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var attributor_1 = __webpack_require__(12);
function camelize(name) {
    var parts = name.split('-');
    var rest = parts
        .slice(1)
        .map(function (part) {
        return part[0].toUpperCase() + part.slice(1);
    })
        .join('');
    return parts[0] + rest;
}
var StyleAttributor = /** @class */ (function (_super) {
    __extends(StyleAttributor, _super);
    function StyleAttributor() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    StyleAttributor.keys = function (node) {
        return (node.getAttribute('style') || '').split(';').map(function (value) {
            var arr = value.split(':');
            return arr[0].trim();
        });
    };
    StyleAttributor.prototype.add = function (node, value) {
        if (!this.canAdd(node, value))
            return false;
        // @ts-ignore
        node.style[camelize(this.keyName)] = value;
        return true;
    };
    StyleAttributor.prototype.remove = function (node) {
        // @ts-ignore
        node.style[camelize(this.keyName)] = '';
        if (!node.getAttribute('style')) {
            node.removeAttribute('style');
        }
    };
    StyleAttributor.prototype.value = function (node) {
        // @ts-ignore
        var value = node.style[camelize(this.keyName)];
        return this.canAdd(node, value) ? value : '';
    };
    return StyleAttributor;
}(attributor_1.default));
exports.default = StyleAttributor;


/***/ }),
/* 34 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Theme = function () {
  function Theme(quill, options) {
    _classCallCheck(this, Theme);

    this.quill = quill;
    this.options = options;
    this.modules = {};
  }

  _createClass(Theme, [{
    key: 'init',
    value: function init() {
      var _this = this;

      Object.keys(this.options.modules).forEach(function (name) {
        if (_this.modules[name] == null) {
          _this.addModule(name);
        }
      });
    }
  }, {
    key: 'addModule',
    value: function addModule(name) {
      var moduleClass = this.quill.constructor.import('modules/' + name);
      this.modules[name] = new moduleClass(this.quill, this.options.modules[name] || {});
      return this.modules[name];
    }
  }]);

  return Theme;
}();

Theme.DEFAULTS = {
  modules: {}
};
Theme.themes = {
  'default': Theme
};

exports.default = Theme;

/***/ }),
/* 35 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _text = __webpack_require__(7);

var _text2 = _interopRequireDefault(_text);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var GUARD_TEXT = '\uFEFF';

var Embed = function (_Parchment$Embed) {
  _inherits(Embed, _Parchment$Embed);

  function Embed(node) {
    _classCallCheck(this, Embed);

    var _this = _possibleConstructorReturn(this, (Embed.__proto__ || Object.getPrototypeOf(Embed)).call(this, node));

    _this.contentNode = document.createElement('span');
    _this.contentNode.setAttribute('contenteditable', false);
    [].slice.call(_this.domNode.childNodes).forEach(function (childNode) {
      _this.contentNode.appendChild(childNode);
    });
    _this.leftGuard = document.createTextNode(GUARD_TEXT);
    _this.rightGuard = document.createTextNode(GUARD_TEXT);
    _this.domNode.appendChild(_this.leftGuard);
    _this.domNode.appendChild(_this.contentNode);
    _this.domNode.appendChild(_this.rightGuard);
    return _this;
  }

  _createClass(Embed, [{
    key: 'index',
    value: function index(node, offset) {
      if (node === this.leftGuard) return 0;
      if (node === this.rightGuard) return 1;
      return _get(Embed.prototype.__proto__ || Object.getPrototypeOf(Embed.prototype), 'index', this).call(this, node, offset);
    }
  }, {
    key: 'restore',
    value: function restore(node) {
      var range = void 0,
          textNode = void 0;
      var text = node.data.split(GUARD_TEXT).join('');
      if (node === this.leftGuard) {
        if (this.prev instanceof _text2.default) {
          var prevLength = this.prev.length();
          this.prev.insertAt(prevLength, text);
          range = {
            startNode: this.prev.domNode,
            startOffset: prevLength + text.length
          };
        } else {
          textNode = document.createTextNode(text);
          this.parent.insertBefore(_parchment2.default.create(textNode), this);
          range = {
            startNode: textNode,
            startOffset: text.length
          };
        }
      } else if (node === this.rightGuard) {
        if (this.next instanceof _text2.default) {
          this.next.insertAt(0, text);
          range = {
            startNode: this.next.domNode,
            startOffset: text.length
          };
        } else {
          textNode = document.createTextNode(text);
          this.parent.insertBefore(_parchment2.default.create(textNode), this.next);
          range = {
            startNode: textNode,
            startOffset: text.length
          };
        }
      }
      node.data = GUARD_TEXT;
      return range;
    }
  }, {
    key: 'update',
    value: function update(mutations, context) {
      var _this2 = this;

      mutations.forEach(function (mutation) {
        if (mutation.type === 'characterData' && (mutation.target === _this2.leftGuard || mutation.target === _this2.rightGuard)) {
          var range = _this2.restore(mutation.target);
          if (range) context.range = range;
        }
      });
    }
  }]);

  return Embed;
}(_parchment2.default.Embed);

exports.default = Embed;

/***/ }),
/* 36 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.AlignStyle = exports.AlignClass = exports.AlignAttribute = undefined;

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var config = {
  scope: _parchment2.default.Scope.BLOCK,
  whitelist: ['right', 'center', 'justify']
};

var AlignAttribute = new _parchment2.default.Attributor.Attribute('align', 'align', config);
var AlignClass = new _parchment2.default.Attributor.Class('align', 'ql-align', config);
var AlignStyle = new _parchment2.default.Attributor.Style('align', 'text-align', config);

exports.AlignAttribute = AlignAttribute;
exports.AlignClass = AlignClass;
exports.AlignStyle = AlignStyle;

/***/ }),
/* 37 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.BackgroundStyle = exports.BackgroundClass = undefined;

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _color = __webpack_require__(26);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var BackgroundClass = new _parchment2.default.Attributor.Class('background', 'ql-bg', {
  scope: _parchment2.default.Scope.INLINE
});
var BackgroundStyle = new _color.ColorAttributor('background', 'background-color', {
  scope: _parchment2.default.Scope.INLINE
});

exports.BackgroundClass = BackgroundClass;
exports.BackgroundStyle = BackgroundStyle;

/***/ }),
/* 38 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.DirectionStyle = exports.DirectionClass = exports.DirectionAttribute = undefined;

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var config = {
  scope: _parchment2.default.Scope.BLOCK,
  whitelist: ['rtl']
};

var DirectionAttribute = new _parchment2.default.Attributor.Attribute('direction', 'dir', config);
var DirectionClass = new _parchment2.default.Attributor.Class('direction', 'ql-direction', config);
var DirectionStyle = new _parchment2.default.Attributor.Style('direction', 'direction', config);

exports.DirectionAttribute = DirectionAttribute;
exports.DirectionClass = DirectionClass;
exports.DirectionStyle = DirectionStyle;

/***/ }),
/* 39 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.FontClass = exports.FontStyle = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var config = {
  scope: _parchment2.default.Scope.INLINE,
  whitelist: ['serif', 'monospace']
};

var FontClass = new _parchment2.default.Attributor.Class('font', 'ql-font', config);

var FontStyleAttributor = function (_Parchment$Attributor) {
  _inherits(FontStyleAttributor, _Parchment$Attributor);

  function FontStyleAttributor() {
    _classCallCheck(this, FontStyleAttributor);

    return _possibleConstructorReturn(this, (FontStyleAttributor.__proto__ || Object.getPrototypeOf(FontStyleAttributor)).apply(this, arguments));
  }

  _createClass(FontStyleAttributor, [{
    key: 'value',
    value: function value(node) {
      return _get(FontStyleAttributor.prototype.__proto__ || Object.getPrototypeOf(FontStyleAttributor.prototype), 'value', this).call(this, node).replace(/["']/g, '');
    }
  }]);

  return FontStyleAttributor;
}(_parchment2.default.Attributor.Style);

var FontStyle = new FontStyleAttributor('font', 'font-family', config);

exports.FontStyle = FontStyle;
exports.FontClass = FontClass;

/***/ }),
/* 40 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.SizeStyle = exports.SizeClass = undefined;

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var SizeClass = new _parchment2.default.Attributor.Class('size', 'ql-size', {
  scope: _parchment2.default.Scope.INLINE,
  whitelist: ['small', 'large', 'huge']
});
var SizeStyle = new _parchment2.default.Attributor.Style('size', 'font-size', {
  scope: _parchment2.default.Scope.INLINE,
  whitelist: ['10px', '18px', '32px']
});

exports.SizeClass = SizeClass;
exports.SizeStyle = SizeStyle;

/***/ }),
/* 41 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


module.exports = {
  'align': {
    '': __webpack_require__(76),
    'center': __webpack_require__(77),
    'right': __webpack_require__(78),
    'justify': __webpack_require__(79)
  },
  'background': __webpack_require__(80),
  'blockquote': __webpack_require__(81),
  'bold': __webpack_require__(82),
  'clean': __webpack_require__(83),
  'code': __webpack_require__(58),
  'code-block': __webpack_require__(58),
  'color': __webpack_require__(84),
  'direction': {
    '': __webpack_require__(85),
    'rtl': __webpack_require__(86)
  },
  'float': {
    'center': __webpack_require__(87),
    'full': __webpack_require__(88),
    'left': __webpack_require__(89),
    'right': __webpack_require__(90)
  },
  'formula': __webpack_require__(91),
  'header': {
    '1': __webpack_require__(92),
    '2': __webpack_require__(93)
  },
  'italic': __webpack_require__(94),
  'image': __webpack_require__(95),
  'indent': {
    '+1': __webpack_require__(96),
    '-1': __webpack_require__(97)
  },
  'link': __webpack_require__(98),
  'list': {
    'ordered': __webpack_require__(99),
    'bullet': __webpack_require__(100),
    'check': __webpack_require__(101)
  },
  'script': {
    'sub': __webpack_require__(102),
    'super': __webpack_require__(103)
  },
  'strike': __webpack_require__(104),
  'underline': __webpack_require__(105),
  'video': __webpack_require__(106)
};

/***/ }),
/* 42 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getLastChangeIndex = exports.default = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _quill = __webpack_require__(5);

var _quill2 = _interopRequireDefault(_quill);

var _module = __webpack_require__(9);

var _module2 = _interopRequireDefault(_module);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var History = function (_Module) {
  _inherits(History, _Module);

  function History(quill, options) {
    _classCallCheck(this, History);

    var _this = _possibleConstructorReturn(this, (History.__proto__ || Object.getPrototypeOf(History)).call(this, quill, options));

    _this.lastRecorded = 0;
    _this.ignoreChange = false;
    _this.clear();
    _this.quill.on(_quill2.default.events.EDITOR_CHANGE, function (eventName, delta, oldDelta, source) {
      if (eventName !== _quill2.default.events.TEXT_CHANGE || _this.ignoreChange) return;
      if (!_this.options.userOnly || source === _quill2.default.sources.USER) {
        _this.record(delta, oldDelta);
      } else {
        _this.transform(delta);
      }
    });
    _this.quill.keyboard.addBinding({ key: 'Z', shortKey: true }, _this.undo.bind(_this));
    _this.quill.keyboard.addBinding({ key: 'Z', shortKey: true, shiftKey: true }, _this.redo.bind(_this));
    if (/Win/i.test(navigator.platform)) {
      _this.quill.keyboard.addBinding({ key: 'Y', shortKey: true }, _this.redo.bind(_this));
    }
    return _this;
  }

  _createClass(History, [{
    key: 'change',
    value: function change(source, dest) {
      if (this.stack[source].length === 0) return;
      var delta = this.stack[source].pop();
      this.stack[dest].push(delta);
      this.lastRecorded = 0;
      this.ignoreChange = true;
      this.quill.updateContents(delta[source], _quill2.default.sources.USER);
      this.ignoreChange = false;
      var index = getLastChangeIndex(delta[source]);
      this.quill.setSelection(index);
    }
  }, {
    key: 'clear',
    value: function clear() {
      this.stack = { undo: [], redo: [] };
    }
  }, {
    key: 'cutoff',
    value: function cutoff() {
      this.lastRecorded = 0;
    }
  }, {
    key: 'record',
    value: function record(changeDelta, oldDelta) {
      if (changeDelta.ops.length === 0) return;
      this.stack.redo = [];
      var undoDelta = this.quill.getContents().diff(oldDelta);
      var timestamp = Date.now();
      if (this.lastRecorded + this.options.delay > timestamp && this.stack.undo.length > 0) {
        var delta = this.stack.undo.pop();
        undoDelta = undoDelta.compose(delta.undo);
        changeDelta = delta.redo.compose(changeDelta);
      } else {
        this.lastRecorded = timestamp;
      }
      this.stack.undo.push({
        redo: changeDelta,
        undo: undoDelta
      });
      if (this.stack.undo.length > this.options.maxStack) {
        this.stack.undo.shift();
      }
    }
  }, {
    key: 'redo',
    value: function redo() {
      this.change('redo', 'undo');
    }
  }, {
    key: 'transform',
    value: function transform(delta) {
      this.stack.undo.forEach(function (change) {
        change.undo = delta.transform(change.undo, true);
        change.redo = delta.transform(change.redo, true);
      });
      this.stack.redo.forEach(function (change) {
        change.undo = delta.transform(change.undo, true);
        change.redo = delta.transform(change.redo, true);
      });
    }
  }, {
    key: 'undo',
    value: function undo() {
      this.change('undo', 'redo');
    }
  }]);

  return History;
}(_module2.default);

History.DEFAULTS = {
  delay: 1000,
  maxStack: 100,
  userOnly: false
};

function endsWithNewlineChange(delta) {
  var lastOp = delta.ops[delta.ops.length - 1];
  if (lastOp == null) return false;
  if (lastOp.insert != null) {
    return typeof lastOp.insert === 'string' && lastOp.insert.endsWith('\n');
  }
  if (lastOp.attributes != null) {
    return Object.keys(lastOp.attributes).some(function (attr) {
      return _parchment2.default.query(attr, _parchment2.default.Scope.BLOCK) != null;
    });
  }
  return false;
}

function getLastChangeIndex(delta) {
  var deleteLength = delta.reduce(function (length, op) {
    length += op.delete || 0;
    return length;
  }, 0);
  var changeIndex = delta.length() - deleteLength;
  if (endsWithNewlineChange(delta)) {
    changeIndex -= 1;
  }
  return changeIndex;
}

exports.default = History;
exports.getLastChangeIndex = getLastChangeIndex;

/***/ }),
/* 43 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.BaseTooltip = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _extend = __webpack_require__(3);

var _extend2 = _interopRequireDefault(_extend);

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _emitter = __webpack_require__(8);

var _emitter2 = _interopRequireDefault(_emitter);

var _keyboard = __webpack_require__(23);

var _keyboard2 = _interopRequireDefault(_keyboard);

var _theme = __webpack_require__(34);

var _theme2 = _interopRequireDefault(_theme);

var _colorPicker = __webpack_require__(59);

var _colorPicker2 = _interopRequireDefault(_colorPicker);

var _iconPicker = __webpack_require__(60);

var _iconPicker2 = _interopRequireDefault(_iconPicker);

var _picker = __webpack_require__(28);

var _picker2 = _interopRequireDefault(_picker);

var _tooltip = __webpack_require__(61);

var _tooltip2 = _interopRequireDefault(_tooltip);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var ALIGNS = [false, 'center', 'right', 'justify'];

var COLORS = ["#000000", "#e60000", "#ff9900", "#ffff00", "#008a00", "#0066cc", "#9933ff", "#ffffff", "#facccc", "#ffebcc", "#ffffcc", "#cce8cc", "#cce0f5", "#ebd6ff", "#bbbbbb", "#f06666", "#ffc266", "#ffff66", "#66b966", "#66a3e0", "#c285ff", "#888888", "#a10000", "#b26b00", "#b2b200", "#006100", "#0047b2", "#6b24b2", "#444444", "#5c0000", "#663d00", "#666600", "#003700", "#002966", "#3d1466"];

var FONTS = [false, 'serif', 'monospace'];

var HEADERS = ['1', '2', '3', false];

var SIZES = ['small', false, 'large', 'huge'];

var BaseTheme = function (_Theme) {
  _inherits(BaseTheme, _Theme);

  function BaseTheme(quill, options) {
    _classCallCheck(this, BaseTheme);

    var _this = _possibleConstructorReturn(this, (BaseTheme.__proto__ || Object.getPrototypeOf(BaseTheme)).call(this, quill, options));

    var listener = function listener(e) {
      if (!document.body.contains(quill.root)) {
        return document.body.removeEventListener('click', listener);
      }
      if (_this.tooltip != null && !_this.tooltip.root.contains(e.target) && document.activeElement !== _this.tooltip.textbox && !_this.quill.hasFocus()) {
        _this.tooltip.hide();
      }
      if (_this.pickers != null) {
        _this.pickers.forEach(function (picker) {
          if (!picker.container.contains(e.target)) {
            picker.close();
          }
        });
      }
    };
    quill.emitter.listenDOM('click', document.body, listener);
    return _this;
  }

  _createClass(BaseTheme, [{
    key: 'addModule',
    value: function addModule(name) {
      var module = _get(BaseTheme.prototype.__proto__ || Object.getPrototypeOf(BaseTheme.prototype), 'addModule', this).call(this, name);
      if (name === 'toolbar') {
        this.extendToolbar(module);
      }
      return module;
    }
  }, {
    key: 'buildButtons',
    value: function buildButtons(buttons, icons) {
      buttons.forEach(function (button) {
        var className = button.getAttribute('class') || '';
        className.split(/\s+/).forEach(function (name) {
          if (!name.startsWith('ql-')) return;
          name = name.slice('ql-'.length);
          if (icons[name] == null) return;
          if (name === 'direction') {
            button.innerHTML = icons[name][''] + icons[name]['rtl'];
          } else if (typeof icons[name] === 'string') {
            button.innerHTML = icons[name];
          } else {
            var value = button.value || '';
            if (value != null && icons[name][value]) {
              button.innerHTML = icons[name][value];
            }
          }
        });
      });
    }
  }, {
    key: 'buildPickers',
    value: function buildPickers(selects, icons) {
      var _this2 = this;

      this.pickers = selects.map(function (select) {
        if (select.classList.contains('ql-align')) {
          if (select.querySelector('option') == null) {
            fillSelect(select, ALIGNS);
          }
          return new _iconPicker2.default(select, icons.align);
        } else if (select.classList.contains('ql-background') || select.classList.contains('ql-color')) {
          var format = select.classList.contains('ql-background') ? 'background' : 'color';
          if (select.querySelector('option') == null) {
            fillSelect(select, COLORS, format === 'background' ? '#ffffff' : '#000000');
          }
          return new _colorPicker2.default(select, icons[format]);
        } else {
          if (select.querySelector('option') == null) {
            if (select.classList.contains('ql-font')) {
              fillSelect(select, FONTS);
            } else if (select.classList.contains('ql-header')) {
              fillSelect(select, HEADERS);
            } else if (select.classList.contains('ql-size')) {
              fillSelect(select, SIZES);
            }
          }
          return new _picker2.default(select);
        }
      });
      var update = function update() {
        _this2.pickers.forEach(function (picker) {
          picker.update();
        });
      };
      this.quill.on(_emitter2.default.events.EDITOR_CHANGE, update);
    }
  }]);

  return BaseTheme;
}(_theme2.default);

BaseTheme.DEFAULTS = (0, _extend2.default)(true, {}, _theme2.default.DEFAULTS, {
  modules: {
    toolbar: {
      handlers: {
        formula: function formula() {
          this.quill.theme.tooltip.edit('formula');
        },
        image: function image() {
          var _this3 = this;

          var fileInput = this.container.querySelector('input.ql-image[type=file]');
          if (fileInput == null) {
            fileInput = document.createElement('input');
            fileInput.setAttribute('type', 'file');
            fileInput.setAttribute('accept', 'image/png, image/gif, image/jpeg, image/bmp, image/x-icon');
            fileInput.classList.add('ql-image');
            fileInput.addEventListener('change', function () {
              if (fileInput.files != null && fileInput.files[0] != null) {
                var reader = new FileReader();
                reader.onload = function (e) {
                  var range = _this3.quill.getSelection(true);
                  _this3.quill.updateContents(new _quillDelta2.default().retain(range.index).delete(range.length).insert({ image: e.target.result }), _emitter2.default.sources.USER);
                  _this3.quill.setSelection(range.index + 1, _emitter2.default.sources.SILENT);
                  fileInput.value = "";
                };
                reader.readAsDataURL(fileInput.files[0]);
              }
            });
            this.container.appendChild(fileInput);
          }
          fileInput.click();
        },
        video: function video() {
          this.quill.theme.tooltip.edit('video');
        }
      }
    }
  }
});

var BaseTooltip = function (_Tooltip) {
  _inherits(BaseTooltip, _Tooltip);

  function BaseTooltip(quill, boundsContainer) {
    _classCallCheck(this, BaseTooltip);

    var _this4 = _possibleConstructorReturn(this, (BaseTooltip.__proto__ || Object.getPrototypeOf(BaseTooltip)).call(this, quill, boundsContainer));

    _this4.textbox = _this4.root.querySelector('input[type="text"]');
    _this4.listen();
    return _this4;
  }

  _createClass(BaseTooltip, [{
    key: 'listen',
    value: function listen() {
      var _this5 = this;

      this.textbox.addEventListener('keydown', function (event) {
        if (_keyboard2.default.match(event, 'enter')) {
          _this5.save();
          event.preventDefault();
        } else if (_keyboard2.default.match(event, 'escape')) {
          _this5.cancel();
          event.preventDefault();
        }
      });
    }
  }, {
    key: 'cancel',
    value: function cancel() {
      this.hide();
    }
  }, {
    key: 'edit',
    value: function edit() {
      var mode = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'link';
      var preview = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

      this.root.classList.remove('ql-hidden');
      this.root.classList.add('ql-editing');
      if (preview != null) {
        this.textbox.value = preview;
      } else if (mode !== this.root.getAttribute('data-mode')) {
        this.textbox.value = '';
      }
      this.position(this.quill.getBounds(this.quill.selection.savedRange));
      this.textbox.select();
      this.textbox.setAttribute('placeholder', this.textbox.getAttribute('data-' + mode) || '');
      this.root.setAttribute('data-mode', mode);
    }
  }, {
    key: 'restoreFocus',
    value: function restoreFocus() {
      var scrollTop = this.quill.scrollingContainer.scrollTop;
      this.quill.focus();
      this.quill.scrollingContainer.scrollTop = scrollTop;
    }
  }, {
    key: 'save',
    value: function save() {
      var value = this.textbox.value;
      switch (this.root.getAttribute('data-mode')) {
        case 'link':
          {
            var scrollTop = this.quill.root.scrollTop;
            if (this.linkRange) {
              this.quill.formatText(this.linkRange, 'link', value, _emitter2.default.sources.USER);
              delete this.linkRange;
            } else {
              this.restoreFocus();
              this.quill.format('link', value, _emitter2.default.sources.USER);
            }
            this.quill.root.scrollTop = scrollTop;
            break;
          }
        case 'video':
          {
            value = extractVideoUrl(value);
          } // eslint-disable-next-line no-fallthrough
        case 'formula':
          {
            if (!value) break;
            var range = this.quill.getSelection(true);
            if (range != null) {
              var index = range.index + range.length;
              this.quill.insertEmbed(index, this.root.getAttribute('data-mode'), value, _emitter2.default.sources.USER);
              if (this.root.getAttribute('data-mode') === 'formula') {
                this.quill.insertText(index + 1, ' ', _emitter2.default.sources.USER);
              }
              this.quill.setSelection(index + 2, _emitter2.default.sources.USER);
            }
            break;
          }
        default:
      }
      this.textbox.value = '';
      this.hide();
    }
  }]);

  return BaseTooltip;
}(_tooltip2.default);

function extractVideoUrl(url) {
  var match = url.match(/^(?:(https?):\/\/)?(?:(?:www|m)\.)?youtube\.com\/watch.*v=([a-zA-Z0-9_-]+)/) || url.match(/^(?:(https?):\/\/)?(?:(?:www|m)\.)?youtu\.be\/([a-zA-Z0-9_-]+)/);
  if (match) {
    return (match[1] || 'https') + '://www.youtube.com/embed/' + match[2] + '?showinfo=0';
  }
  if (match = url.match(/^(?:(https?):\/\/)?(?:www\.)?vimeo\.com\/(\d+)/)) {
    // eslint-disable-line no-cond-assign
    return (match[1] || 'https') + '://player.vimeo.com/video/' + match[2] + '/';
  }
  return url;
}

function fillSelect(select, values) {
  var defaultValue = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;

  values.forEach(function (value) {
    var option = document.createElement('option');
    if (value === defaultValue) {
      option.setAttribute('selected', 'selected');
    } else {
      option.setAttribute('value', value);
    }
    select.appendChild(option);
  });
}

exports.BaseTooltip = BaseTooltip;
exports.default = BaseTheme;

/***/ }),
/* 44 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

Object.defineProperty(exports, "__esModule", { value: true });
var LinkedList = /** @class */ (function () {
    function LinkedList() {
        this.head = this.tail = null;
        this.length = 0;
    }
    LinkedList.prototype.append = function () {
        var nodes = [];
        for (var _i = 0; _i < arguments.length; _i++) {
            nodes[_i] = arguments[_i];
        }
        this.insertBefore(nodes[0], null);
        if (nodes.length > 1) {
            this.append.apply(this, nodes.slice(1));
        }
    };
    LinkedList.prototype.contains = function (node) {
        var cur, next = this.iterator();
        while ((cur = next())) {
            if (cur === node)
                return true;
        }
        return false;
    };
    LinkedList.prototype.insertBefore = function (node, refNode) {
        if (!node)
            return;
        node.next = refNode;
        if (refNode != null) {
            node.prev = refNode.prev;
            if (refNode.prev != null) {
                refNode.prev.next = node;
            }
            refNode.prev = node;
            if (refNode === this.head) {
                this.head = node;
            }
        }
        else if (this.tail != null) {
            this.tail.next = node;
            node.prev = this.tail;
            this.tail = node;
        }
        else {
            node.prev = null;
            this.head = this.tail = node;
        }
        this.length += 1;
    };
    LinkedList.prototype.offset = function (target) {
        var index = 0, cur = this.head;
        while (cur != null) {
            if (cur === target)
                return index;
            index += cur.length();
            cur = cur.next;
        }
        return -1;
    };
    LinkedList.prototype.remove = function (node) {
        if (!this.contains(node))
            return;
        if (node.prev != null)
            node.prev.next = node.next;
        if (node.next != null)
            node.next.prev = node.prev;
        if (node === this.head)
            this.head = node.next;
        if (node === this.tail)
            this.tail = node.prev;
        this.length -= 1;
    };
    LinkedList.prototype.iterator = function (curNode) {
        if (curNode === void 0) { curNode = this.head; }
        // TODO use yield when we can
        return function () {
            var ret = curNode;
            if (curNode != null)
                curNode = curNode.next;
            return ret;
        };
    };
    LinkedList.prototype.find = function (index, inclusive) {
        if (inclusive === void 0) { inclusive = false; }
        var cur, next = this.iterator();
        while ((cur = next())) {
            var length = cur.length();
            if (index < length ||
                (inclusive && index === length && (cur.next == null || cur.next.length() !== 0))) {
                return [cur, index];
            }
            index -= length;
        }
        return [null, 0];
    };
    LinkedList.prototype.forEach = function (callback) {
        var cur, next = this.iterator();
        while ((cur = next())) {
            callback(cur);
        }
    };
    LinkedList.prototype.forEachAt = function (index, length, callback) {
        if (length <= 0)
            return;
        var _a = this.find(index), startNode = _a[0], offset = _a[1];
        var cur, curIndex = index - offset, next = this.iterator(startNode);
        while ((cur = next()) && curIndex < index + length) {
            var curLength = cur.length();
            if (index > curIndex) {
                callback(cur, index - curIndex, Math.min(length, curIndex + curLength - index));
            }
            else {
                callback(cur, 0, Math.min(curLength, index + length - curIndex));
            }
            curIndex += curLength;
        }
    };
    LinkedList.prototype.map = function (callback) {
        return this.reduce(function (memo, cur) {
            memo.push(callback(cur));
            return memo;
        }, []);
    };
    LinkedList.prototype.reduce = function (callback, memo) {
        var cur, next = this.iterator();
        while ((cur = next())) {
            memo = callback(memo, cur);
        }
        return memo;
    };
    return LinkedList;
}());
exports.default = LinkedList;


/***/ }),
/* 45 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var container_1 = __webpack_require__(17);
var Registry = __webpack_require__(1);
var OBSERVER_CONFIG = {
    attributes: true,
    characterData: true,
    characterDataOldValue: true,
    childList: true,
    subtree: true,
};
var MAX_OPTIMIZE_ITERATIONS = 100;
var ScrollBlot = /** @class */ (function (_super) {
    __extends(ScrollBlot, _super);
    function ScrollBlot(node) {
        var _this = _super.call(this, node) || this;
        _this.scroll = _this;
        _this.observer = new MutationObserver(function (mutations) {
            _this.update(mutations);
        });
        _this.observer.observe(_this.domNode, OBSERVER_CONFIG);
        _this.attach();
        return _this;
    }
    ScrollBlot.prototype.detach = function () {
        _super.prototype.detach.call(this);
        this.observer.disconnect();
    };
    ScrollBlot.prototype.deleteAt = function (index, length) {
        this.update();
        if (index === 0 && length === this.length()) {
            this.children.forEach(function (child) {
                child.remove();
            });
        }
        else {
            _super.prototype.deleteAt.call(this, index, length);
        }
    };
    ScrollBlot.prototype.formatAt = function (index, length, name, value) {
        this.update();
        _super.prototype.formatAt.call(this, index, length, name, value);
    };
    ScrollBlot.prototype.insertAt = function (index, value, def) {
        this.update();
        _super.prototype.insertAt.call(this, index, value, def);
    };
    ScrollBlot.prototype.optimize = function (mutations, context) {
        var _this = this;
        if (mutations === void 0) { mutations = []; }
        if (context === void 0) { context = {}; }
        _super.prototype.optimize.call(this, context);
        // We must modify mutations directly, cannot make copy and then modify
        var records = [].slice.call(this.observer.takeRecords());
        // Array.push currently seems to be implemented by a non-tail recursive function
        // so we cannot just mutations.push.apply(mutations, this.observer.takeRecords());
        while (records.length > 0)
            mutations.push(records.pop());
        // TODO use WeakMap
        var mark = function (blot, markParent) {
            if (markParent === void 0) { markParent = true; }
            if (blot == null || blot === _this)
                return;
            if (blot.domNode.parentNode == null)
                return;
            // @ts-ignore
            if (blot.domNode[Registry.DATA_KEY].mutations == null) {
                // @ts-ignore
                blot.domNode[Registry.DATA_KEY].mutations = [];
            }
            if (markParent)
                mark(blot.parent);
        };
        var optimize = function (blot) {
            // Post-order traversal
            if (
            // @ts-ignore
            blot.domNode[Registry.DATA_KEY] == null ||
                // @ts-ignore
                blot.domNode[Registry.DATA_KEY].mutations == null) {
                return;
            }
            if (blot instanceof container_1.default) {
                blot.children.forEach(optimize);
            }
            blot.optimize(context);
        };
        var remaining = mutations;
        for (var i = 0; remaining.length > 0; i += 1) {
            if (i >= MAX_OPTIMIZE_ITERATIONS) {
                throw new Error('[Parchment] Maximum optimize iterations reached');
            }
            remaining.forEach(function (mutation) {
                var blot = Registry.find(mutation.target, true);
                if (blot == null)
                    return;
                if (blot.domNode === mutation.target) {
                    if (mutation.type === 'childList') {
                        mark(Registry.find(mutation.previousSibling, false));
                        [].forEach.call(mutation.addedNodes, function (node) {
                            var child = Registry.find(node, false);
                            mark(child, false);
                            if (child instanceof container_1.default) {
                                child.children.forEach(function (grandChild) {
                                    mark(grandChild, false);
                                });
                            }
                        });
                    }
                    else if (mutation.type === 'attributes') {
                        mark(blot.prev);
                    }
                }
                mark(blot);
            });
            this.children.forEach(optimize);
            remaining = [].slice.call(this.observer.takeRecords());
            records = remaining.slice();
            while (records.length > 0)
                mutations.push(records.pop());
        }
    };
    ScrollBlot.prototype.update = function (mutations, context) {
        var _this = this;
        if (context === void 0) { context = {}; }
        mutations = mutations || this.observer.takeRecords();
        // TODO use WeakMap
        mutations
            .map(function (mutation) {
            var blot = Registry.find(mutation.target, true);
            if (blot == null)
                return null;
            // @ts-ignore
            if (blot.domNode[Registry.DATA_KEY].mutations == null) {
                // @ts-ignore
                blot.domNode[Registry.DATA_KEY].mutations = [mutation];
                return blot;
            }
            else {
                // @ts-ignore
                blot.domNode[Registry.DATA_KEY].mutations.push(mutation);
                return null;
            }
        })
            .forEach(function (blot) {
            if (blot == null ||
                blot === _this ||
                //@ts-ignore
                blot.domNode[Registry.DATA_KEY] == null)
                return;
            // @ts-ignore
            blot.update(blot.domNode[Registry.DATA_KEY].mutations || [], context);
        });
        // @ts-ignore
        if (this.domNode[Registry.DATA_KEY].mutations != null) {
            // @ts-ignore
            _super.prototype.update.call(this, this.domNode[Registry.DATA_KEY].mutations, context);
        }
        this.optimize(mutations, context);
    };
    ScrollBlot.blotName = 'scroll';
    ScrollBlot.defaultChild = 'block';
    ScrollBlot.scope = Registry.Scope.BLOCK_BLOT;
    ScrollBlot.tagName = 'DIV';
    return ScrollBlot;
}(container_1.default));
exports.default = ScrollBlot;


/***/ }),
/* 46 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var format_1 = __webpack_require__(18);
var Registry = __webpack_require__(1);
// Shallow object comparison
function isEqual(obj1, obj2) {
    if (Object.keys(obj1).length !== Object.keys(obj2).length)
        return false;
    // @ts-ignore
    for (var prop in obj1) {
        // @ts-ignore
        if (obj1[prop] !== obj2[prop])
            return false;
    }
    return true;
}
var InlineBlot = /** @class */ (function (_super) {
    __extends(InlineBlot, _super);
    function InlineBlot() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    InlineBlot.formats = function (domNode) {
        if (domNode.tagName === InlineBlot.tagName)
            return undefined;
        return _super.formats.call(this, domNode);
    };
    InlineBlot.prototype.format = function (name, value) {
        var _this = this;
        if (name === this.statics.blotName && !value) {
            this.children.forEach(function (child) {
                if (!(child instanceof format_1.default)) {
                    child = child.wrap(InlineBlot.blotName, true);
                }
                _this.attributes.copy(child);
            });
            this.unwrap();
        }
        else {
            _super.prototype.format.call(this, name, value);
        }
    };
    InlineBlot.prototype.formatAt = function (index, length, name, value) {
        if (this.formats()[name] != null || Registry.query(name, Registry.Scope.ATTRIBUTE)) {
            var blot = this.isolate(index, length);
            blot.format(name, value);
        }
        else {
            _super.prototype.formatAt.call(this, index, length, name, value);
        }
    };
    InlineBlot.prototype.optimize = function (context) {
        _super.prototype.optimize.call(this, context);
        var formats = this.formats();
        if (Object.keys(formats).length === 0) {
            return this.unwrap(); // unformatted span
        }
        var next = this.next;
        if (next instanceof InlineBlot && next.prev === this && isEqual(formats, next.formats())) {
            next.moveChildren(this);
            next.remove();
        }
    };
    InlineBlot.blotName = 'inline';
    InlineBlot.scope = Registry.Scope.INLINE_BLOT;
    InlineBlot.tagName = 'SPAN';
    return InlineBlot;
}(format_1.default));
exports.default = InlineBlot;


/***/ }),
/* 47 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var format_1 = __webpack_require__(18);
var Registry = __webpack_require__(1);
var BlockBlot = /** @class */ (function (_super) {
    __extends(BlockBlot, _super);
    function BlockBlot() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    BlockBlot.formats = function (domNode) {
        var tagName = Registry.query(BlockBlot.blotName).tagName;
        if (domNode.tagName === tagName)
            return undefined;
        return _super.formats.call(this, domNode);
    };
    BlockBlot.prototype.format = function (name, value) {
        if (Registry.query(name, Registry.Scope.BLOCK) == null) {
            return;
        }
        else if (name === this.statics.blotName && !value) {
            this.replaceWith(BlockBlot.blotName);
        }
        else {
            _super.prototype.format.call(this, name, value);
        }
    };
    BlockBlot.prototype.formatAt = function (index, length, name, value) {
        if (Registry.query(name, Registry.Scope.BLOCK) != null) {
            this.format(name, value);
        }
        else {
            _super.prototype.formatAt.call(this, index, length, name, value);
        }
    };
    BlockBlot.prototype.insertAt = function (index, value, def) {
        if (def == null || Registry.query(value, Registry.Scope.INLINE) != null) {
            // Insert text or inline
            _super.prototype.insertAt.call(this, index, value, def);
        }
        else {
            var after = this.split(index);
            var blot = Registry.create(value, def);
            after.parent.insertBefore(blot, after);
        }
    };
    BlockBlot.prototype.update = function (mutations, context) {
        if (navigator.userAgent.match(/Trident/)) {
            this.build();
        }
        else {
            _super.prototype.update.call(this, mutations, context);
        }
    };
    BlockBlot.blotName = 'block';
    BlockBlot.scope = Registry.Scope.BLOCK_BLOT;
    BlockBlot.tagName = 'P';
    return BlockBlot;
}(format_1.default));
exports.default = BlockBlot;


/***/ }),
/* 48 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var leaf_1 = __webpack_require__(19);
var EmbedBlot = /** @class */ (function (_super) {
    __extends(EmbedBlot, _super);
    function EmbedBlot() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    EmbedBlot.formats = function (domNode) {
        return undefined;
    };
    EmbedBlot.prototype.format = function (name, value) {
        // super.formatAt wraps, which is what we want in general,
        // but this allows subclasses to overwrite for formats
        // that just apply to particular embeds
        _super.prototype.formatAt.call(this, 0, this.length(), name, value);
    };
    EmbedBlot.prototype.formatAt = function (index, length, name, value) {
        if (index === 0 && length === this.length()) {
            this.format(name, value);
        }
        else {
            _super.prototype.formatAt.call(this, index, length, name, value);
        }
    };
    EmbedBlot.prototype.formats = function () {
        return this.statics.formats(this.domNode);
    };
    return EmbedBlot;
}(leaf_1.default));
exports.default = EmbedBlot;


/***/ }),
/* 49 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var leaf_1 = __webpack_require__(19);
var Registry = __webpack_require__(1);
var TextBlot = /** @class */ (function (_super) {
    __extends(TextBlot, _super);
    function TextBlot(node) {
        var _this = _super.call(this, node) || this;
        _this.text = _this.statics.value(_this.domNode);
        return _this;
    }
    TextBlot.create = function (value) {
        return document.createTextNode(value);
    };
    TextBlot.value = function (domNode) {
        var text = domNode.data;
        // @ts-ignore
        if (text['normalize'])
            text = text['normalize']();
        return text;
    };
    TextBlot.prototype.deleteAt = function (index, length) {
        this.domNode.data = this.text = this.text.slice(0, index) + this.text.slice(index + length);
    };
    TextBlot.prototype.index = function (node, offset) {
        if (this.domNode === node) {
            return offset;
        }
        return -1;
    };
    TextBlot.prototype.insertAt = function (index, value, def) {
        if (def == null) {
            this.text = this.text.slice(0, index) + value + this.text.slice(index);
            this.domNode.data = this.text;
        }
        else {
            _super.prototype.insertAt.call(this, index, value, def);
        }
    };
    TextBlot.prototype.length = function () {
        return this.text.length;
    };
    TextBlot.prototype.optimize = function (context) {
        _super.prototype.optimize.call(this, context);
        this.text = this.statics.value(this.domNode);
        if (this.text.length === 0) {
            this.remove();
        }
        else if (this.next instanceof TextBlot && this.next.prev === this) {
            this.insertAt(this.length(), this.next.value());
            this.next.remove();
        }
    };
    TextBlot.prototype.position = function (index, inclusive) {
        if (inclusive === void 0) { inclusive = false; }
        return [this.domNode, index];
    };
    TextBlot.prototype.split = function (index, force) {
        if (force === void 0) { force = false; }
        if (!force) {
            if (index === 0)
                return this;
            if (index === this.length())
                return this.next;
        }
        var after = Registry.create(this.domNode.splitText(index));
        this.parent.insertBefore(after, this.next);
        this.text = this.statics.value(this.domNode);
        return after;
    };
    TextBlot.prototype.update = function (mutations, context) {
        var _this = this;
        if (mutations.some(function (mutation) {
            return mutation.type === 'characterData' && mutation.target === _this.domNode;
        })) {
            this.text = this.statics.value(this.domNode);
        }
    };
    TextBlot.prototype.value = function () {
        return this.text;
    };
    TextBlot.blotName = 'text';
    TextBlot.scope = Registry.Scope.INLINE_BLOT;
    return TextBlot;
}(leaf_1.default));
exports.default = TextBlot;


/***/ }),
/* 50 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var elem = document.createElement('div');
elem.classList.toggle('test-class', false);
if (elem.classList.contains('test-class')) {
  var _toggle = DOMTokenList.prototype.toggle;
  DOMTokenList.prototype.toggle = function (token, force) {
    if (arguments.length > 1 && !this.contains(token) === !force) {
      return force;
    } else {
      return _toggle.call(this, token);
    }
  };
}

if (!String.prototype.startsWith) {
  String.prototype.startsWith = function (searchString, position) {
    position = position || 0;
    return this.substr(position, searchString.length) === searchString;
  };
}

if (!String.prototype.endsWith) {
  String.prototype.endsWith = function (searchString, position) {
    var subjectString = this.toString();
    if (typeof position !== 'number' || !isFinite(position) || Math.floor(position) !== position || position > subjectString.length) {
      position = subjectString.length;
    }
    position -= searchString.length;
    var lastIndex = subjectString.indexOf(searchString, position);
    return lastIndex !== -1 && lastIndex === position;
  };
}

if (!Array.prototype.find) {
  Object.defineProperty(Array.prototype, "find", {
    value: function value(predicate) {
      if (this === null) {
        throw new TypeError('Array.prototype.find called on null or undefined');
      }
      if (typeof predicate !== 'function') {
        throw new TypeError('predicate must be a function');
      }
      var list = Object(this);
      var length = list.length >>> 0;
      var thisArg = arguments[1];
      var value;

      for (var i = 0; i < length; i++) {
        value = list[i];
        if (predicate.call(thisArg, value, i, list)) {
          return value;
        }
      }
      return undefined;
    }
  });
}

document.addEventListener("DOMContentLoaded", function () {
  // Disable resizing in Firefox
  document.execCommand("enableObjectResizing", false, false);
  // Disable automatic linkifying in IE11
  document.execCommand("autoUrlDetect", false, false);
});

/***/ }),
/* 51 */
/***/ (function(module, exports) {

/**
 * This library modifies the diff-patch-match library by Neil Fraser
 * by removing the patch and match functionality and certain advanced
 * options in the diff function. The original license is as follows:
 *
 * ===
 *
 * Diff Match and Patch
 *
 * Copyright 2006 Google Inc.
 * http://code.google.com/p/google-diff-match-patch/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


/**
 * The data structure representing a diff is an array of tuples:
 * [[DIFF_DELETE, 'Hello'], [DIFF_INSERT, 'Goodbye'], [DIFF_EQUAL, ' world.']]
 * which means: delete 'Hello', add 'Goodbye' and keep ' world.'
 */
var DIFF_DELETE = -1;
var DIFF_INSERT = 1;
var DIFF_EQUAL = 0;


/**
 * Find the differences between two texts.  Simplifies the problem by stripping
 * any common prefix or suffix off the texts before diffing.
 * @param {string} text1 Old string to be diffed.
 * @param {string} text2 New string to be diffed.
 * @param {Int} cursor_pos Expected edit position in text1 (optional)
 * @return {Array} Array of diff tuples.
 */
function diff_main(text1, text2, cursor_pos) {
  // Check for equality (speedup).
  if (text1 == text2) {
    if (text1) {
      return [[DIFF_EQUAL, text1]];
    }
    return [];
  }

  // Check cursor_pos within bounds
  if (cursor_pos < 0 || text1.length < cursor_pos) {
    cursor_pos = null;
  }

  // Trim off common prefix (speedup).
  var commonlength = diff_commonPrefix(text1, text2);
  var commonprefix = text1.substring(0, commonlength);
  text1 = text1.substring(commonlength);
  text2 = text2.substring(commonlength);

  // Trim off common suffix (speedup).
  commonlength = diff_commonSuffix(text1, text2);
  var commonsuffix = text1.substring(text1.length - commonlength);
  text1 = text1.substring(0, text1.length - commonlength);
  text2 = text2.substring(0, text2.length - commonlength);

  // Compute the diff on the middle block.
  var diffs = diff_compute_(text1, text2);

  // Restore the prefix and suffix.
  if (commonprefix) {
    diffs.unshift([DIFF_EQUAL, commonprefix]);
  }
  if (commonsuffix) {
    diffs.push([DIFF_EQUAL, commonsuffix]);
  }
  diff_cleanupMerge(diffs);
  if (cursor_pos != null) {
    diffs = fix_cursor(diffs, cursor_pos);
  }
  diffs = fix_emoji(diffs);
  return diffs;
};


/**
 * Find the differences between two texts.  Assumes that the texts do not
 * have any common prefix or suffix.
 * @param {string} text1 Old string to be diffed.
 * @param {string} text2 New string to be diffed.
 * @return {Array} Array of diff tuples.
 */
function diff_compute_(text1, text2) {
  var diffs;

  if (!text1) {
    // Just add some text (speedup).
    return [[DIFF_INSERT, text2]];
  }

  if (!text2) {
    // Just delete some text (speedup).
    return [[DIFF_DELETE, text1]];
  }

  var longtext = text1.length > text2.length ? text1 : text2;
  var shorttext = text1.length > text2.length ? text2 : text1;
  var i = longtext.indexOf(shorttext);
  if (i != -1) {
    // Shorter text is inside the longer text (speedup).
    diffs = [[DIFF_INSERT, longtext.substring(0, i)],
             [DIFF_EQUAL, shorttext],
             [DIFF_INSERT, longtext.substring(i + shorttext.length)]];
    // Swap insertions for deletions if diff is reversed.
    if (text1.length > text2.length) {
      diffs[0][0] = diffs[2][0] = DIFF_DELETE;
    }
    return diffs;
  }

  if (shorttext.length == 1) {
    // Single character string.
    // After the previous speedup, the character can't be an equality.
    return [[DIFF_DELETE, text1], [DIFF_INSERT, text2]];
  }

  // Check to see if the problem can be split in two.
  var hm = diff_halfMatch_(text1, text2);
  if (hm) {
    // A half-match was found, sort out the return data.
    var text1_a = hm[0];
    var text1_b = hm[1];
    var text2_a = hm[2];
    var text2_b = hm[3];
    var mid_common = hm[4];
    // Send both pairs off for separate processing.
    var diffs_a = diff_main(text1_a, text2_a);
    var diffs_b = diff_main(text1_b, text2_b);
    // Merge the results.
    return diffs_a.concat([[DIFF_EQUAL, mid_common]], diffs_b);
  }

  return diff_bisect_(text1, text2);
};


/**
 * Find the 'middle snake' of a diff, split the problem in two
 * and return the recursively constructed diff.
 * See Myers 1986 paper: An O(ND) Difference Algorithm and Its Variations.
 * @param {string} text1 Old string to be diffed.
 * @param {string} text2 New string to be diffed.
 * @return {Array} Array of diff tuples.
 * @private
 */
function diff_bisect_(text1, text2) {
  // Cache the text lengths to prevent multiple calls.
  var text1_length = text1.length;
  var text2_length = text2.length;
  var max_d = Math.ceil((text1_length + text2_length) / 2);
  var v_offset = max_d;
  var v_length = 2 * max_d;
  var v1 = new Array(v_length);
  var v2 = new Array(v_length);
  // Setting all elements to -1 is faster in Chrome & Firefox than mixing
  // integers and undefined.
  for (var x = 0; x < v_length; x++) {
    v1[x] = -1;
    v2[x] = -1;
  }
  v1[v_offset + 1] = 0;
  v2[v_offset + 1] = 0;
  var delta = text1_length - text2_length;
  // If the total number of characters is odd, then the front path will collide
  // with the reverse path.
  var front = (delta % 2 != 0);
  // Offsets for start and end of k loop.
  // Prevents mapping of space beyond the grid.
  var k1start = 0;
  var k1end = 0;
  var k2start = 0;
  var k2end = 0;
  for (var d = 0; d < max_d; d++) {
    // Walk the front path one step.
    for (var k1 = -d + k1start; k1 <= d - k1end; k1 += 2) {
      var k1_offset = v_offset + k1;
      var x1;
      if (k1 == -d || (k1 != d && v1[k1_offset - 1] < v1[k1_offset + 1])) {
        x1 = v1[k1_offset + 1];
      } else {
        x1 = v1[k1_offset - 1] + 1;
      }
      var y1 = x1 - k1;
      while (x1 < text1_length && y1 < text2_length &&
             text1.charAt(x1) == text2.charAt(y1)) {
        x1++;
        y1++;
      }
      v1[k1_offset] = x1;
      if (x1 > text1_length) {
        // Ran off the right of the graph.
        k1end += 2;
      } else if (y1 > text2_length) {
        // Ran off the bottom of the graph.
        k1start += 2;
      } else if (front) {
        var k2_offset = v_offset + delta - k1;
        if (k2_offset >= 0 && k2_offset < v_length && v2[k2_offset] != -1) {
          // Mirror x2 onto top-left coordinate system.
          var x2 = text1_length - v2[k2_offset];
          if (x1 >= x2) {
            // Overlap detected.
            return diff_bisectSplit_(text1, text2, x1, y1);
          }
        }
      }
    }

    // Walk the reverse path one step.
    for (var k2 = -d + k2start; k2 <= d - k2end; k2 += 2) {
      var k2_offset = v_offset + k2;
      var x2;
      if (k2 == -d || (k2 != d && v2[k2_offset - 1] < v2[k2_offset + 1])) {
        x2 = v2[k2_offset + 1];
      } else {
        x2 = v2[k2_offset - 1] + 1;
      }
      var y2 = x2 - k2;
      while (x2 < text1_length && y2 < text2_length &&
             text1.charAt(text1_length - x2 - 1) ==
             text2.charAt(text2_length - y2 - 1)) {
        x2++;
        y2++;
      }
      v2[k2_offset] = x2;
      if (x2 > text1_length) {
        // Ran off the left of the graph.
        k2end += 2;
      } else if (y2 > text2_length) {
        // Ran off the top of the graph.
        k2start += 2;
      } else if (!front) {
        var k1_offset = v_offset + delta - k2;
        if (k1_offset >= 0 && k1_offset < v_length && v1[k1_offset] != -1) {
          var x1 = v1[k1_offset];
          var y1 = v_offset + x1 - k1_offset;
          // Mirror x2 onto top-left coordinate system.
          x2 = text1_length - x2;
          if (x1 >= x2) {
            // Overlap detected.
            return diff_bisectSplit_(text1, text2, x1, y1);
          }
        }
      }
    }
  }
  // Diff took too long and hit the deadline or
  // number of diffs equals number of characters, no commonality at all.
  return [[DIFF_DELETE, text1], [DIFF_INSERT, text2]];
};


/**
 * Given the location of the 'middle snake', split the diff in two parts
 * and recurse.
 * @param {string} text1 Old string to be diffed.
 * @param {string} text2 New string to be diffed.
 * @param {number} x Index of split point in text1.
 * @param {number} y Index of split point in text2.
 * @return {Array} Array of diff tuples.
 */
function diff_bisectSplit_(text1, text2, x, y) {
  var text1a = text1.substring(0, x);
  var text2a = text2.substring(0, y);
  var text1b = text1.substring(x);
  var text2b = text2.substring(y);

  // Compute both diffs serially.
  var diffs = diff_main(text1a, text2a);
  var diffsb = diff_main(text1b, text2b);

  return diffs.concat(diffsb);
};


/**
 * Determine the common prefix of two strings.
 * @param {string} text1 First string.
 * @param {string} text2 Second string.
 * @return {number} The number of characters common to the start of each
 *     string.
 */
function diff_commonPrefix(text1, text2) {
  // Quick check for common null cases.
  if (!text1 || !text2 || text1.charAt(0) != text2.charAt(0)) {
    return 0;
  }
  // Binary search.
  // Performance analysis: http://neil.fraser.name/news/2007/10/09/
  var pointermin = 0;
  var pointermax = Math.min(text1.length, text2.length);
  var pointermid = pointermax;
  var pointerstart = 0;
  while (pointermin < pointermid) {
    if (text1.substring(pointerstart, pointermid) ==
        text2.substring(pointerstart, pointermid)) {
      pointermin = pointermid;
      pointerstart = pointermin;
    } else {
      pointermax = pointermid;
    }
    pointermid = Math.floor((pointermax - pointermin) / 2 + pointermin);
  }
  return pointermid;
};


/**
 * Determine the common suffix of two strings.
 * @param {string} text1 First string.
 * @param {string} text2 Second string.
 * @return {number} The number of characters common to the end of each string.
 */
function diff_commonSuffix(text1, text2) {
  // Quick check for common null cases.
  if (!text1 || !text2 ||
      text1.charAt(text1.length - 1) != text2.charAt(text2.length - 1)) {
    return 0;
  }
  // Binary search.
  // Performance analysis: http://neil.fraser.name/news/2007/10/09/
  var pointermin = 0;
  var pointermax = Math.min(text1.length, text2.length);
  var pointermid = pointermax;
  var pointerend = 0;
  while (pointermin < pointermid) {
    if (text1.substring(text1.length - pointermid, text1.length - pointerend) ==
        text2.substring(text2.length - pointermid, text2.length - pointerend)) {
      pointermin = pointermid;
      pointerend = pointermin;
    } else {
      pointermax = pointermid;
    }
    pointermid = Math.floor((pointermax - pointermin) / 2 + pointermin);
  }
  return pointermid;
};


/**
 * Do the two texts share a substring which is at least half the length of the
 * longer text?
 * This speedup can produce non-minimal diffs.
 * @param {string} text1 First string.
 * @param {string} text2 Second string.
 * @return {Array.<string>} Five element Array, containing the prefix of
 *     text1, the suffix of text1, the prefix of text2, the suffix of
 *     text2 and the common middle.  Or null if there was no match.
 */
function diff_halfMatch_(text1, text2) {
  var longtext = text1.length > text2.length ? text1 : text2;
  var shorttext = text1.length > text2.length ? text2 : text1;
  if (longtext.length < 4 || shorttext.length * 2 < longtext.length) {
    return null;  // Pointless.
  }

  /**
   * Does a substring of shorttext exist within longtext such that the substring
   * is at least half the length of longtext?
   * Closure, but does not reference any external variables.
   * @param {string} longtext Longer string.
   * @param {string} shorttext Shorter string.
   * @param {number} i Start index of quarter length substring within longtext.
   * @return {Array.<string>} Five element Array, containing the prefix of
   *     longtext, the suffix of longtext, the prefix of shorttext, the suffix
   *     of shorttext and the common middle.  Or null if there was no match.
   * @private
   */
  function diff_halfMatchI_(longtext, shorttext, i) {
    // Start with a 1/4 length substring at position i as a seed.
    var seed = longtext.substring(i, i + Math.floor(longtext.length / 4));
    var j = -1;
    var best_common = '';
    var best_longtext_a, best_longtext_b, best_shorttext_a, best_shorttext_b;
    while ((j = shorttext.indexOf(seed, j + 1)) != -1) {
      var prefixLength = diff_commonPrefix(longtext.substring(i),
                                           shorttext.substring(j));
      var suffixLength = diff_commonSuffix(longtext.substring(0, i),
                                           shorttext.substring(0, j));
      if (best_common.length < suffixLength + prefixLength) {
        best_common = shorttext.substring(j - suffixLength, j) +
            shorttext.substring(j, j + prefixLength);
        best_longtext_a = longtext.substring(0, i - suffixLength);
        best_longtext_b = longtext.substring(i + prefixLength);
        best_shorttext_a = shorttext.substring(0, j - suffixLength);
        best_shorttext_b = shorttext.substring(j + prefixLength);
      }
    }
    if (best_common.length * 2 >= longtext.length) {
      return [best_longtext_a, best_longtext_b,
              best_shorttext_a, best_shorttext_b, best_common];
    } else {
      return null;
    }
  }

  // First check if the second quarter is the seed for a half-match.
  var hm1 = diff_halfMatchI_(longtext, shorttext,
                             Math.ceil(longtext.length / 4));
  // Check again based on the third quarter.
  var hm2 = diff_halfMatchI_(longtext, shorttext,
                             Math.ceil(longtext.length / 2));
  var hm;
  if (!hm1 && !hm2) {
    return null;
  } else if (!hm2) {
    hm = hm1;
  } else if (!hm1) {
    hm = hm2;
  } else {
    // Both matched.  Select the longest.
    hm = hm1[4].length > hm2[4].length ? hm1 : hm2;
  }

  // A half-match was found, sort out the return data.
  var text1_a, text1_b, text2_a, text2_b;
  if (text1.length > text2.length) {
    text1_a = hm[0];
    text1_b = hm[1];
    text2_a = hm[2];
    text2_b = hm[3];
  } else {
    text2_a = hm[0];
    text2_b = hm[1];
    text1_a = hm[2];
    text1_b = hm[3];
  }
  var mid_common = hm[4];
  return [text1_a, text1_b, text2_a, text2_b, mid_common];
};


/**
 * Reorder and merge like edit sections.  Merge equalities.
 * Any edit section can move as long as it doesn't cross an equality.
 * @param {Array} diffs Array of diff tuples.
 */
function diff_cleanupMerge(diffs) {
  diffs.push([DIFF_EQUAL, '']);  // Add a dummy entry at the end.
  var pointer = 0;
  var count_delete = 0;
  var count_insert = 0;
  var text_delete = '';
  var text_insert = '';
  var commonlength;
  while (pointer < diffs.length) {
    switch (diffs[pointer][0]) {
      case DIFF_INSERT:
        count_insert++;
        text_insert += diffs[pointer][1];
        pointer++;
        break;
      case DIFF_DELETE:
        count_delete++;
        text_delete += diffs[pointer][1];
        pointer++;
        break;
      case DIFF_EQUAL:
        // Upon reaching an equality, check for prior redundancies.
        if (count_delete + count_insert > 1) {
          if (count_delete !== 0 && count_insert !== 0) {
            // Factor out any common prefixies.
            commonlength = diff_commonPrefix(text_insert, text_delete);
            if (commonlength !== 0) {
              if ((pointer - count_delete - count_insert) > 0 &&
                  diffs[pointer - count_delete - count_insert - 1][0] ==
                  DIFF_EQUAL) {
                diffs[pointer - count_delete - count_insert - 1][1] +=
                    text_insert.substring(0, commonlength);
              } else {
                diffs.splice(0, 0, [DIFF_EQUAL,
                                    text_insert.substring(0, commonlength)]);
                pointer++;
              }
              text_insert = text_insert.substring(commonlength);
              text_delete = text_delete.substring(commonlength);
            }
            // Factor out any common suffixies.
            commonlength = diff_commonSuffix(text_insert, text_delete);
            if (commonlength !== 0) {
              diffs[pointer][1] = text_insert.substring(text_insert.length -
                  commonlength) + diffs[pointer][1];
              text_insert = text_insert.substring(0, text_insert.length -
                  commonlength);
              text_delete = text_delete.substring(0, text_delete.length -
                  commonlength);
            }
          }
          // Delete the offending records and add the merged ones.
          if (count_delete === 0) {
            diffs.splice(pointer - count_insert,
                count_delete + count_insert, [DIFF_INSERT, text_insert]);
          } else if (count_insert === 0) {
            diffs.splice(pointer - count_delete,
                count_delete + count_insert, [DIFF_DELETE, text_delete]);
          } else {
            diffs.splice(pointer - count_delete - count_insert,
                count_delete + count_insert, [DIFF_DELETE, text_delete],
                [DIFF_INSERT, text_insert]);
          }
          pointer = pointer - count_delete - count_insert +
                    (count_delete ? 1 : 0) + (count_insert ? 1 : 0) + 1;
        } else if (pointer !== 0 && diffs[pointer - 1][0] == DIFF_EQUAL) {
          // Merge this equality with the previous one.
          diffs[pointer - 1][1] += diffs[pointer][1];
          diffs.splice(pointer, 1);
        } else {
          pointer++;
        }
        count_insert = 0;
        count_delete = 0;
        text_delete = '';
        text_insert = '';
        break;
    }
  }
  if (diffs[diffs.length - 1][1] === '') {
    diffs.pop();  // Remove the dummy entry at the end.
  }

  // Second pass: look for single edits surrounded on both sides by equalities
  // which can be shifted sideways to eliminate an equality.
  // e.g: A<ins>BA</ins>C -> <ins>AB</ins>AC
  var changes = false;
  pointer = 1;
  // Intentionally ignore the first and last element (don't need checking).
  while (pointer < diffs.length - 1) {
    if (diffs[pointer - 1][0] == DIFF_EQUAL &&
        diffs[pointer + 1][0] == DIFF_EQUAL) {
      // This is a single edit surrounded by equalities.
      if (diffs[pointer][1].substring(diffs[pointer][1].length -
          diffs[pointer - 1][1].length) == diffs[pointer - 1][1]) {
        // Shift the edit over the previous equality.
        diffs[pointer][1] = diffs[pointer - 1][1] +
            diffs[pointer][1].substring(0, diffs[pointer][1].length -
                                        diffs[pointer - 1][1].length);
        diffs[pointer + 1][1] = diffs[pointer - 1][1] + diffs[pointer + 1][1];
        diffs.splice(pointer - 1, 1);
        changes = true;
      } else if (diffs[pointer][1].substring(0, diffs[pointer + 1][1].length) ==
          diffs[pointer + 1][1]) {
        // Shift the edit over the next equality.
        diffs[pointer - 1][1] += diffs[pointer + 1][1];
        diffs[pointer][1] =
            diffs[pointer][1].substring(diffs[pointer + 1][1].length) +
            diffs[pointer + 1][1];
        diffs.splice(pointer + 1, 1);
        changes = true;
      }
    }
    pointer++;
  }
  // If shifts were made, the diff needs reordering and another shift sweep.
  if (changes) {
    diff_cleanupMerge(diffs);
  }
};


var diff = diff_main;
diff.INSERT = DIFF_INSERT;
diff.DELETE = DIFF_DELETE;
diff.EQUAL = DIFF_EQUAL;

module.exports = diff;

/*
 * Modify a diff such that the cursor position points to the start of a change:
 * E.g.
 *   cursor_normalize_diff([[DIFF_EQUAL, 'abc']], 1)
 *     => [1, [[DIFF_EQUAL, 'a'], [DIFF_EQUAL, 'bc']]]
 *   cursor_normalize_diff([[DIFF_INSERT, 'new'], [DIFF_DELETE, 'xyz']], 2)
 *     => [2, [[DIFF_INSERT, 'new'], [DIFF_DELETE, 'xy'], [DIFF_DELETE, 'z']]]
 *
 * @param {Array} diffs Array of diff tuples
 * @param {Int} cursor_pos Suggested edit position. Must not be out of bounds!
 * @return {Array} A tuple [cursor location in the modified diff, modified diff]
 */
function cursor_normalize_diff (diffs, cursor_pos) {
  if (cursor_pos === 0) {
    return [DIFF_EQUAL, diffs];
  }
  for (var current_pos = 0, i = 0; i < diffs.length; i++) {
    var d = diffs[i];
    if (d[0] === DIFF_DELETE || d[0] === DIFF_EQUAL) {
      var next_pos = current_pos + d[1].length;
      if (cursor_pos === next_pos) {
        return [i + 1, diffs];
      } else if (cursor_pos < next_pos) {
        // copy to prevent side effects
        diffs = diffs.slice();
        // split d into two diff changes
        var split_pos = cursor_pos - current_pos;
        var d_left = [d[0], d[1].slice(0, split_pos)];
        var d_right = [d[0], d[1].slice(split_pos)];
        diffs.splice(i, 1, d_left, d_right);
        return [i + 1, diffs];
      } else {
        current_pos = next_pos;
      }
    }
  }
  throw new Error('cursor_pos is out of bounds!')
}

/*
 * Modify a diff such that the edit position is "shifted" to the proposed edit location (cursor_position).
 *
 * Case 1)
 *   Check if a naive shift is possible:
 *     [0, X], [ 1, Y] -> [ 1, Y], [0, X]    (if X + Y === Y + X)
 *     [0, X], [-1, Y] -> [-1, Y], [0, X]    (if X + Y === Y + X) - holds same result
 * Case 2)
 *   Check if the following shifts are possible:
 *     [0, 'pre'], [ 1, 'prefix'] -> [ 1, 'pre'], [0, 'pre'], [ 1, 'fix']
 *     [0, 'pre'], [-1, 'prefix'] -> [-1, 'pre'], [0, 'pre'], [-1, 'fix']
 *         ^            ^
 *         d          d_next
 *
 * @param {Array} diffs Array of diff tuples
 * @param {Int} cursor_pos Suggested edit position. Must not be out of bounds!
 * @return {Array} Array of diff tuples
 */
function fix_cursor (diffs, cursor_pos) {
  var norm = cursor_normalize_diff(diffs, cursor_pos);
  var ndiffs = norm[1];
  var cursor_pointer = norm[0];
  var d = ndiffs[cursor_pointer];
  var d_next = ndiffs[cursor_pointer + 1];

  if (d == null) {
    // Text was deleted from end of original string,
    // cursor is now out of bounds in new string
    return diffs;
  } else if (d[0] !== DIFF_EQUAL) {
    // A modification happened at the cursor location.
    // This is the expected outcome, so we can return the original diff.
    return diffs;
  } else {
    if (d_next != null && d[1] + d_next[1] === d_next[1] + d[1]) {
      // Case 1)
      // It is possible to perform a naive shift
      ndiffs.splice(cursor_pointer, 2, d_next, d)
      return merge_tuples(ndiffs, cursor_pointer, 2)
    } else if (d_next != null && d_next[1].indexOf(d[1]) === 0) {
      // Case 2)
      // d[1] is a prefix of d_next[1]
      // We can assume that d_next[0] !== 0, since d[0] === 0
      // Shift edit locations..
      ndiffs.splice(cursor_pointer, 2, [d_next[0], d[1]], [0, d[1]]);
      var suffix = d_next[1].slice(d[1].length);
      if (suffix.length > 0) {
        ndiffs.splice(cursor_pointer + 2, 0, [d_next[0], suffix]);
      }
      return merge_tuples(ndiffs, cursor_pointer, 3)
    } else {
      // Not possible to perform any modification
      return diffs;
    }
  }
}

/*
 * Check diff did not split surrogate pairs.
 * Ex. [0, '\uD83D'], [-1, '\uDC36'], [1, '\uDC2F'] -> [-1, '\uD83D\uDC36'], [1, '\uD83D\uDC2F']
 *     '\uD83D\uDC36' === '🐶', '\uD83D\uDC2F' === '🐯'
 *
 * @param {Array} diffs Array of diff tuples
 * @return {Array} Array of diff tuples
 */
function fix_emoji (diffs) {
  var compact = false;
  var starts_with_pair_end = function(str) {
    return str.charCodeAt(0) >= 0xDC00 && str.charCodeAt(0) <= 0xDFFF;
  }
  var ends_with_pair_start = function(str) {
    return str.charCodeAt(str.length-1) >= 0xD800 && str.charCodeAt(str.length-1) <= 0xDBFF;
  }
  for (var i = 2; i < diffs.length; i += 1) {
    if (diffs[i-2][0] === DIFF_EQUAL && ends_with_pair_start(diffs[i-2][1]) &&
        diffs[i-1][0] === DIFF_DELETE && starts_with_pair_end(diffs[i-1][1]) &&
        diffs[i][0] === DIFF_INSERT && starts_with_pair_end(diffs[i][1])) {
      compact = true;

      diffs[i-1][1] = diffs[i-2][1].slice(-1) + diffs[i-1][1];
      diffs[i][1] = diffs[i-2][1].slice(-1) + diffs[i][1];

      diffs[i-2][1] = diffs[i-2][1].slice(0, -1);
    }
  }
  if (!compact) {
    return diffs;
  }
  var fixed_diffs = [];
  for (var i = 0; i < diffs.length; i += 1) {
    if (diffs[i][1].length > 0) {
      fixed_diffs.push(diffs[i]);
    }
  }
  return fixed_diffs;
}

/*
 * Try to merge tuples with their neigbors in a given range.
 * E.g. [0, 'a'], [0, 'b'] -> [0, 'ab']
 *
 * @param {Array} diffs Array of diff tuples.
 * @param {Int} start Position of the first element to merge (diffs[start] is also merged with diffs[start - 1]).
 * @param {Int} length Number of consecutive elements to check.
 * @return {Array} Array of merged diff tuples.
 */
function merge_tuples (diffs, start, length) {
  // Check from (start-1) to (start+length).
  for (var i = start + length - 1; i >= 0 && i >= start - 1; i--) {
    if (i + 1 < diffs.length) {
      var left_d = diffs[i];
      var right_d = diffs[i+1];
      if (left_d[0] === right_d[1]) {
        diffs.splice(i, 2, [left_d[0], left_d[1] + right_d[1]]);
      }
    }
  }
  return diffs;
}


/***/ }),
/* 52 */
/***/ (function(module, exports) {

exports = module.exports = typeof Object.keys === 'function'
  ? Object.keys : shim;

exports.shim = shim;
function shim (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}


/***/ }),
/* 53 */
/***/ (function(module, exports) {

var supportsArgumentsClass = (function(){
  return Object.prototype.toString.call(arguments)
})() == '[object Arguments]';

exports = module.exports = supportsArgumentsClass ? supported : unsupported;

exports.supported = supported;
function supported(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
};

exports.unsupported = unsupported;
function unsupported(object){
  return object &&
    typeof object == 'object' &&
    typeof object.length == 'number' &&
    Object.prototype.hasOwnProperty.call(object, 'callee') &&
    !Object.prototype.propertyIsEnumerable.call(object, 'callee') ||
    false;
};


/***/ }),
/* 54 */
/***/ (function(module, exports) {

'use strict';

var has = Object.prototype.hasOwnProperty
  , prefix = '~';

/**
 * Constructor to create a storage for our `EE` objects.
 * An `Events` instance is a plain object whose properties are event names.
 *
 * @constructor
 * @api private
 */
function Events() {}

//
// We try to not inherit from `Object.prototype`. In some engines creating an
// instance in this way is faster than calling `Object.create(null)` directly.
// If `Object.create(null)` is not supported we prefix the event names with a
// character to make sure that the built-in object properties are not
// overridden or used as an attack vector.
//
if (Object.create) {
  Events.prototype = Object.create(null);

  //
  // This hack is needed because the `__proto__` property is still inherited in
  // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.
  //
  if (!new Events().__proto__) prefix = false;
}

/**
 * Representation of a single event listener.
 *
 * @param {Function} fn The listener function.
 * @param {Mixed} context The context to invoke the listener with.
 * @param {Boolean} [once=false] Specify if the listener is a one-time listener.
 * @constructor
 * @api private
 */
function EE(fn, context, once) {
  this.fn = fn;
  this.context = context;
  this.once = once || false;
}

/**
 * Minimal `EventEmitter` interface that is molded against the Node.js
 * `EventEmitter` interface.
 *
 * @constructor
 * @api public
 */
function EventEmitter() {
  this._events = new Events();
  this._eventsCount = 0;
}

/**
 * Return an array listing the events for which the emitter has registered
 * listeners.
 *
 * @returns {Array}
 * @api public
 */
EventEmitter.prototype.eventNames = function eventNames() {
  var names = []
    , events
    , name;

  if (this._eventsCount === 0) return names;

  for (name in (events = this._events)) {
    if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);
  }

  if (Object.getOwnPropertySymbols) {
    return names.concat(Object.getOwnPropertySymbols(events));
  }

  return names;
};

/**
 * Return the listeners registered for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Boolean} exists Only check if there are listeners.
 * @returns {Array|Boolean}
 * @api public
 */
EventEmitter.prototype.listeners = function listeners(event, exists) {
  var evt = prefix ? prefix + event : event
    , available = this._events[evt];

  if (exists) return !!available;
  if (!available) return [];
  if (available.fn) return [available.fn];

  for (var i = 0, l = available.length, ee = new Array(l); i < l; i++) {
    ee[i] = available[i].fn;
  }

  return ee;
};

/**
 * Calls each of the listeners registered for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @returns {Boolean} `true` if the event had listeners, else `false`.
 * @api public
 */
EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
  var evt = prefix ? prefix + event : event;

  if (!this._events[evt]) return false;

  var listeners = this._events[evt]
    , len = arguments.length
    , args
    , i;

  if (listeners.fn) {
    if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);

    switch (len) {
      case 1: return listeners.fn.call(listeners.context), true;
      case 2: return listeners.fn.call(listeners.context, a1), true;
      case 3: return listeners.fn.call(listeners.context, a1, a2), true;
      case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;
      case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
      case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
    }

    for (i = 1, args = new Array(len -1); i < len; i++) {
      args[i - 1] = arguments[i];
    }

    listeners.fn.apply(listeners.context, args);
  } else {
    var length = listeners.length
      , j;

    for (i = 0; i < length; i++) {
      if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);

      switch (len) {
        case 1: listeners[i].fn.call(listeners[i].context); break;
        case 2: listeners[i].fn.call(listeners[i].context, a1); break;
        case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;
        case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;
        default:
          if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {
            args[j - 1] = arguments[j];
          }

          listeners[i].fn.apply(listeners[i].context, args);
      }
    }
  }

  return true;
};

/**
 * Add a listener for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn The listener function.
 * @param {Mixed} [context=this] The context to invoke the listener with.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.on = function on(event, fn, context) {
  var listener = new EE(fn, context || this)
    , evt = prefix ? prefix + event : event;

  if (!this._events[evt]) this._events[evt] = listener, this._eventsCount++;
  else if (!this._events[evt].fn) this._events[evt].push(listener);
  else this._events[evt] = [this._events[evt], listener];

  return this;
};

/**
 * Add a one-time listener for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn The listener function.
 * @param {Mixed} [context=this] The context to invoke the listener with.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.once = function once(event, fn, context) {
  var listener = new EE(fn, context || this, true)
    , evt = prefix ? prefix + event : event;

  if (!this._events[evt]) this._events[evt] = listener, this._eventsCount++;
  else if (!this._events[evt].fn) this._events[evt].push(listener);
  else this._events[evt] = [this._events[evt], listener];

  return this;
};

/**
 * Remove the listeners of a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn Only remove the listeners that match this function.
 * @param {Mixed} context Only remove the listeners that have this context.
 * @param {Boolean} once Only remove one-time listeners.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {
  var evt = prefix ? prefix + event : event;

  if (!this._events[evt]) return this;
  if (!fn) {
    if (--this._eventsCount === 0) this._events = new Events();
    else delete this._events[evt];
    return this;
  }

  var listeners = this._events[evt];

  if (listeners.fn) {
    if (
         listeners.fn === fn
      && (!once || listeners.once)
      && (!context || listeners.context === context)
    ) {
      if (--this._eventsCount === 0) this._events = new Events();
      else delete this._events[evt];
    }
  } else {
    for (var i = 0, events = [], length = listeners.length; i < length; i++) {
      if (
           listeners[i].fn !== fn
        || (once && !listeners[i].once)
        || (context && listeners[i].context !== context)
      ) {
        events.push(listeners[i]);
      }
    }

    //
    // Reset the array, or remove it completely if we have no more listeners.
    //
    if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;
    else if (--this._eventsCount === 0) this._events = new Events();
    else delete this._events[evt];
  }

  return this;
};

/**
 * Remove all listeners, or those of the specified event.
 *
 * @param {String|Symbol} [event] The event name.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
  var evt;

  if (event) {
    evt = prefix ? prefix + event : event;
    if (this._events[evt]) {
      if (--this._eventsCount === 0) this._events = new Events();
      else delete this._events[evt];
    }
  } else {
    this._events = new Events();
    this._eventsCount = 0;
  }

  return this;
};

//
// Alias methods names because people roll like that.
//
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
EventEmitter.prototype.addListener = EventEmitter.prototype.on;

//
// This function doesn't apply anymore.
//
EventEmitter.prototype.setMaxListeners = function setMaxListeners() {
  return this;
};

//
// Expose the prefix.
//
EventEmitter.prefixed = prefix;

//
// Allow `EventEmitter` to be imported as module namespace.
//
EventEmitter.EventEmitter = EventEmitter;

//
// Expose the module.
//
if ('undefined' !== typeof module) {
  module.exports = EventEmitter;
}


/***/ }),
/* 55 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.matchText = exports.matchSpacing = exports.matchNewline = exports.matchBlot = exports.matchAttributor = exports.default = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _extend2 = __webpack_require__(3);

var _extend3 = _interopRequireDefault(_extend2);

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _quill = __webpack_require__(5);

var _quill2 = _interopRequireDefault(_quill);

var _logger = __webpack_require__(10);

var _logger2 = _interopRequireDefault(_logger);

var _module = __webpack_require__(9);

var _module2 = _interopRequireDefault(_module);

var _align = __webpack_require__(36);

var _background = __webpack_require__(37);

var _code = __webpack_require__(13);

var _code2 = _interopRequireDefault(_code);

var _color = __webpack_require__(26);

var _direction = __webpack_require__(38);

var _font = __webpack_require__(39);

var _size = __webpack_require__(40);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var debug = (0, _logger2.default)('quill:clipboard');

var DOM_KEY = '__ql-matcher';

var CLIPBOARD_CONFIG = [[Node.TEXT_NODE, matchText], [Node.TEXT_NODE, matchNewline], ['br', matchBreak], [Node.ELEMENT_NODE, matchNewline], [Node.ELEMENT_NODE, matchBlot], [Node.ELEMENT_NODE, matchSpacing], [Node.ELEMENT_NODE, matchAttributor], [Node.ELEMENT_NODE, matchStyles], ['li', matchIndent], ['b', matchAlias.bind(matchAlias, 'bold')], ['i', matchAlias.bind(matchAlias, 'italic')], ['style', matchIgnore]];

var ATTRIBUTE_ATTRIBUTORS = [_align.AlignAttribute, _direction.DirectionAttribute].reduce(function (memo, attr) {
  memo[attr.keyName] = attr;
  return memo;
}, {});

var STYLE_ATTRIBUTORS = [_align.AlignStyle, _background.BackgroundStyle, _color.ColorStyle, _direction.DirectionStyle, _font.FontStyle, _size.SizeStyle].reduce(function (memo, attr) {
  memo[attr.keyName] = attr;
  return memo;
}, {});

var Clipboard = function (_Module) {
  _inherits(Clipboard, _Module);

  function Clipboard(quill, options) {
    _classCallCheck(this, Clipboard);

    var _this = _possibleConstructorReturn(this, (Clipboard.__proto__ || Object.getPrototypeOf(Clipboard)).call(this, quill, options));

    _this.quill.root.addEventListener('paste', _this.onPaste.bind(_this));
    _this.container = _this.quill.addContainer('ql-clipboard');
    _this.container.setAttribute('contenteditable', true);
    _this.container.setAttribute('tabindex', -1);
    _this.matchers = [];
    CLIPBOARD_CONFIG.concat(_this.options.matchers).forEach(function (_ref) {
      var _ref2 = _slicedToArray(_ref, 2),
          selector = _ref2[0],
          matcher = _ref2[1];

      if (!options.matchVisual && matcher === matchSpacing) return;
      _this.addMatcher(selector, matcher);
    });
    return _this;
  }

  _createClass(Clipboard, [{
    key: 'addMatcher',
    value: function addMatcher(selector, matcher) {
      this.matchers.push([selector, matcher]);
    }
  }, {
    key: 'convert',
    value: function convert(html) {
      if (typeof html === 'string') {
        this.container.innerHTML = html.replace(/\>\r?\n +\</g, '><'); // Remove spaces between tags
        return this.convert();
      }
      var formats = this.quill.getFormat(this.quill.selection.savedRange.index);
      if (formats[_code2.default.blotName]) {
        var text = this.container.innerText;
        this.container.innerHTML = '';
        return new _quillDelta2.default().insert(text, _defineProperty({}, _code2.default.blotName, formats[_code2.default.blotName]));
      }

      var _prepareMatching = this.prepareMatching(),
          _prepareMatching2 = _slicedToArray(_prepareMatching, 2),
          elementMatchers = _prepareMatching2[0],
          textMatchers = _prepareMatching2[1];

      var delta = traverse(this.container, elementMatchers, textMatchers);
      // Remove trailing newline
      if (deltaEndsWith(delta, '\n') && delta.ops[delta.ops.length - 1].attributes == null) {
        delta = delta.compose(new _quillDelta2.default().retain(delta.length() - 1).delete(1));
      }
      debug.log('convert', this.container.innerHTML, delta);
      this.container.innerHTML = '';
      return delta;
    }
  }, {
    key: 'dangerouslyPasteHTML',
    value: function dangerouslyPasteHTML(index, html) {
      var source = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : _quill2.default.sources.API;

      if (typeof index === 'string') {
        this.quill.setContents(this.convert(index), html);
        this.quill.setSelection(0, _quill2.default.sources.SILENT);
      } else {
        var paste = this.convert(html);
        this.quill.updateContents(new _quillDelta2.default().retain(index).concat(paste), source);
        this.quill.setSelection(index + paste.length(), _quill2.default.sources.SILENT);
      }
    }
  }, {
    key: 'onPaste',
    value: function onPaste(e) {
      var _this2 = this;

      if (e.defaultPrevented || !this.quill.isEnabled()) return;
      var range = this.quill.getSelection();
      var delta = new _quillDelta2.default().retain(range.index);
      var scrollTop = this.quill.scrollingContainer.scrollTop;
      this.container.focus();
      this.quill.selection.update(_quill2.default.sources.SILENT);
      setTimeout(function () {
        delta = delta.concat(_this2.convert()).delete(range.length);
        _this2.quill.updateContents(delta, _quill2.default.sources.USER);
        // range.length contributes to delta.length()
        _this2.quill.setSelection(delta.length() - range.length, _quill2.default.sources.SILENT);
        _this2.quill.scrollingContainer.scrollTop = scrollTop;
        _this2.quill.focus();
      }, 1);
    }
  }, {
    key: 'prepareMatching',
    value: function prepareMatching() {
      var _this3 = this;

      var elementMatchers = [],
          textMatchers = [];
      this.matchers.forEach(function (pair) {
        var _pair = _slicedToArray(pair, 2),
            selector = _pair[0],
            matcher = _pair[1];

        switch (selector) {
          case Node.TEXT_NODE:
            textMatchers.push(matcher);
            break;
          case Node.ELEMENT_NODE:
            elementMatchers.push(matcher);
            break;
          default:
            [].forEach.call(_this3.container.querySelectorAll(selector), function (node) {
              // TODO use weakmap
              node[DOM_KEY] = node[DOM_KEY] || [];
              node[DOM_KEY].push(matcher);
            });
            break;
        }
      });
      return [elementMatchers, textMatchers];
    }
  }]);

  return Clipboard;
}(_module2.default);

Clipboard.DEFAULTS = {
  matchers: [],
  matchVisual: true
};

function applyFormat(delta, format, value) {
  if ((typeof format === 'undefined' ? 'undefined' : _typeof(format)) === 'object') {
    return Object.keys(format).reduce(function (delta, key) {
      return applyFormat(delta, key, format[key]);
    }, delta);
  } else {
    return delta.reduce(function (delta, op) {
      if (op.attributes && op.attributes[format]) {
        return delta.push(op);
      } else {
        return delta.insert(op.insert, (0, _extend3.default)({}, _defineProperty({}, format, value), op.attributes));
      }
    }, new _quillDelta2.default());
  }
}

function computeStyle(node) {
  if (node.nodeType !== Node.ELEMENT_NODE) return {};
  var DOM_KEY = '__ql-computed-style';
  return node[DOM_KEY] || (node[DOM_KEY] = window.getComputedStyle(node));
}

function deltaEndsWith(delta, text) {
  var endText = "";
  for (var i = delta.ops.length - 1; i >= 0 && endText.length < text.length; --i) {
    var op = delta.ops[i];
    if (typeof op.insert !== 'string') break;
    endText = op.insert + endText;
  }
  return endText.slice(-1 * text.length) === text;
}

function isLine(node) {
  if (node.childNodes.length === 0) return false; // Exclude embed blocks
  var style = computeStyle(node);
  return ['block', 'list-item'].indexOf(style.display) > -1;
}

function traverse(node, elementMatchers, textMatchers) {
  // Post-order
  if (node.nodeType === node.TEXT_NODE) {
    return textMatchers.reduce(function (delta, matcher) {
      return matcher(node, delta);
    }, new _quillDelta2.default());
  } else if (node.nodeType === node.ELEMENT_NODE) {
    return [].reduce.call(node.childNodes || [], function (delta, childNode) {
      var childrenDelta = traverse(childNode, elementMatchers, textMatchers);
      if (childNode.nodeType === node.ELEMENT_NODE) {
        childrenDelta = elementMatchers.reduce(function (childrenDelta, matcher) {
          return matcher(childNode, childrenDelta);
        }, childrenDelta);
        childrenDelta = (childNode[DOM_KEY] || []).reduce(function (childrenDelta, matcher) {
          return matcher(childNode, childrenDelta);
        }, childrenDelta);
      }
      return delta.concat(childrenDelta);
    }, new _quillDelta2.default());
  } else {
    return new _quillDelta2.default();
  }
}

function matchAlias(format, node, delta) {
  return applyFormat(delta, format, true);
}

function matchAttributor(node, delta) {
  var attributes = _parchment2.default.Attributor.Attribute.keys(node);
  var classes = _parchment2.default.Attributor.Class.keys(node);
  var styles = _parchment2.default.Attributor.Style.keys(node);
  var formats = {};
  attributes.concat(classes).concat(styles).forEach(function (name) {
    var attr = _parchment2.default.query(name, _parchment2.default.Scope.ATTRIBUTE);
    if (attr != null) {
      formats[attr.attrName] = attr.value(node);
      if (formats[attr.attrName]) return;
    }
    attr = ATTRIBUTE_ATTRIBUTORS[name];
    if (attr != null && (attr.attrName === name || attr.keyName === name)) {
      formats[attr.attrName] = attr.value(node) || undefined;
    }
    attr = STYLE_ATTRIBUTORS[name];
    if (attr != null && (attr.attrName === name || attr.keyName === name)) {
      attr = STYLE_ATTRIBUTORS[name];
      formats[attr.attrName] = attr.value(node) || undefined;
    }
  });
  if (Object.keys(formats).length > 0) {
    delta = applyFormat(delta, formats);
  }
  return delta;
}

function matchBlot(node, delta) {
  var match = _parchment2.default.query(node);
  if (match == null) return delta;
  if (match.prototype instanceof _parchment2.default.Embed) {
    var embed = {};
    var value = match.value(node);
    if (value != null) {
      embed[match.blotName] = value;
      delta = new _quillDelta2.default().insert(embed, match.formats(node));
    }
  } else if (typeof match.formats === 'function') {
    delta = applyFormat(delta, match.blotName, match.formats(node));
  }
  return delta;
}

function matchBreak(node, delta) {
  if (!deltaEndsWith(delta, '\n')) {
    delta.insert('\n');
  }
  return delta;
}

function matchIgnore() {
  return new _quillDelta2.default();
}

function matchIndent(node, delta) {
  var match = _parchment2.default.query(node);
  if (match == null || match.blotName !== 'list-item' || !deltaEndsWith(delta, '\n')) {
    return delta;
  }
  var indent = -1,
      parent = node.parentNode;
  while (!parent.classList.contains('ql-clipboard')) {
    if ((_parchment2.default.query(parent) || {}).blotName === 'list') {
      indent += 1;
    }
    parent = parent.parentNode;
  }
  if (indent <= 0) return delta;
  return delta.compose(new _quillDelta2.default().retain(delta.length() - 1).retain(1, { indent: indent }));
}

function matchNewline(node, delta) {
  if (!deltaEndsWith(delta, '\n')) {
    if (isLine(node) || delta.length() > 0 && node.nextSibling && isLine(node.nextSibling)) {
      delta.insert('\n');
    }
  }
  return delta;
}

function matchSpacing(node, delta) {
  if (isLine(node) && node.nextElementSibling != null && !deltaEndsWith(delta, '\n\n')) {
    var nodeHeight = node.offsetHeight + parseFloat(computeStyle(node).marginTop) + parseFloat(computeStyle(node).marginBottom);
    if (node.nextElementSibling.offsetTop > node.offsetTop + nodeHeight * 1.5) {
      delta.insert('\n');
    }
  }
  return delta;
}

function matchStyles(node, delta) {
  var formats = {};
  var style = node.style || {};
  if (style.fontStyle && computeStyle(node).fontStyle === 'italic') {
    formats.italic = true;
  }
  if (style.fontWeight && (computeStyle(node).fontWeight.startsWith('bold') || parseInt(computeStyle(node).fontWeight) >= 700)) {
    formats.bold = true;
  }
  if (Object.keys(formats).length > 0) {
    delta = applyFormat(delta, formats);
  }
  if (parseFloat(style.textIndent || 0) > 0) {
    // Could be 0.5in
    delta = new _quillDelta2.default().insert('\t').concat(delta);
  }
  return delta;
}

function matchText(node, delta) {
  var text = node.data;
  // Word represents empty line with <o:p>&nbsp;</o:p>
  if (node.parentNode.tagName === 'O:P') {
    return delta.insert(text.trim());
  }
  if (text.trim().length === 0 && node.parentNode.classList.contains('ql-clipboard')) {
    return delta;
  }
  if (!computeStyle(node.parentNode).whiteSpace.startsWith('pre')) {
    // eslint-disable-next-line func-style
    var replacer = function replacer(collapse, match) {
      match = match.replace(/[^\u00a0]/g, ''); // \u00a0 is nbsp;
      return match.length < 1 && collapse ? ' ' : match;
    };
    text = text.replace(/\r\n/g, ' ').replace(/\n/g, ' ');
    text = text.replace(/\s\s+/g, replacer.bind(replacer, true)); // collapse whitespace
    if (node.previousSibling == null && isLine(node.parentNode) || node.previousSibling != null && isLine(node.previousSibling)) {
      text = text.replace(/^\s+/, replacer.bind(replacer, false));
    }
    if (node.nextSibling == null && isLine(node.parentNode) || node.nextSibling != null && isLine(node.nextSibling)) {
      text = text.replace(/\s+$/, replacer.bind(replacer, false));
    }
  }
  return delta.insert(text);
}

exports.default = Clipboard;
exports.matchAttributor = matchAttributor;
exports.matchBlot = matchBlot;
exports.matchNewline = matchNewline;
exports.matchSpacing = matchSpacing;
exports.matchText = matchText;

/***/ }),
/* 56 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Bold = function (_Inline) {
  _inherits(Bold, _Inline);

  function Bold() {
    _classCallCheck(this, Bold);

    return _possibleConstructorReturn(this, (Bold.__proto__ || Object.getPrototypeOf(Bold)).apply(this, arguments));
  }

  _createClass(Bold, [{
    key: 'optimize',
    value: function optimize(context) {
      _get(Bold.prototype.__proto__ || Object.getPrototypeOf(Bold.prototype), 'optimize', this).call(this, context);
      if (this.domNode.tagName !== this.statics.tagName[0]) {
        this.replaceWith(this.statics.blotName);
      }
    }
  }], [{
    key: 'create',
    value: function create() {
      return _get(Bold.__proto__ || Object.getPrototypeOf(Bold), 'create', this).call(this);
    }
  }, {
    key: 'formats',
    value: function formats() {
      return true;
    }
  }]);

  return Bold;
}(_inline2.default);

Bold.blotName = 'bold';
Bold.tagName = ['STRONG', 'B'];

exports.default = Bold;

/***/ }),
/* 57 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.addControls = exports.default = undefined;

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _quillDelta = __webpack_require__(2);

var _quillDelta2 = _interopRequireDefault(_quillDelta);

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _quill = __webpack_require__(5);

var _quill2 = _interopRequireDefault(_quill);

var _logger = __webpack_require__(10);

var _logger2 = _interopRequireDefault(_logger);

var _module = __webpack_require__(9);

var _module2 = _interopRequireDefault(_module);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var debug = (0, _logger2.default)('quill:toolbar');

var Toolbar = function (_Module) {
  _inherits(Toolbar, _Module);

  function Toolbar(quill, options) {
    _classCallCheck(this, Toolbar);

    var _this = _possibleConstructorReturn(this, (Toolbar.__proto__ || Object.getPrototypeOf(Toolbar)).call(this, quill, options));

    if (Array.isArray(_this.options.container)) {
      var container = document.createElement('div');
      addControls(container, _this.options.container);
      quill.container.parentNode.insertBefore(container, quill.container);
      _this.container = container;
    } else if (typeof _this.options.container === 'string') {
      _this.container = document.querySelector(_this.options.container);
    } else {
      _this.container = _this.options.container;
    }
    if (!(_this.container instanceof HTMLElement)) {
      var _ret;

      return _ret = debug.error('Container required for toolbar', _this.options), _possibleConstructorReturn(_this, _ret);
    }
    _this.container.classList.add('ql-toolbar');
    _this.controls = [];
    _this.handlers = {};
    Object.keys(_this.options.handlers).forEach(function (format) {
      _this.addHandler(format, _this.options.handlers[format]);
    });
    [].forEach.call(_this.container.querySelectorAll('button, select'), function (input) {
      _this.attach(input);
    });
    _this.quill.on(_quill2.default.events.EDITOR_CHANGE, function (type, range) {
      if (type === _quill2.default.events.SELECTION_CHANGE) {
        _this.update(range);
      }
    });
    _this.quill.on(_quill2.default.events.SCROLL_OPTIMIZE, function () {
      var _this$quill$selection = _this.quill.selection.getRange(),
          _this$quill$selection2 = _slicedToArray(_this$quill$selection, 1),
          range = _this$quill$selection2[0]; // quill.getSelection triggers update


      _this.update(range);
    });
    return _this;
  }

  _createClass(Toolbar, [{
    key: 'addHandler',
    value: function addHandler(format, handler) {
      this.handlers[format] = handler;
    }
  }, {
    key: 'attach',
    value: function attach(input) {
      var _this2 = this;

      var format = [].find.call(input.classList, function (className) {
        return className.indexOf('ql-') === 0;
      });
      if (!format) return;
      format = format.slice('ql-'.length);
      if (input.tagName === 'BUTTON') {
        input.setAttribute('type', 'button');
      }
      if (this.handlers[format] == null) {
        if (this.quill.scroll.whitelist != null && this.quill.scroll.whitelist[format] == null) {
          debug.warn('ignoring attaching to disabled format', format, input);
          return;
        }
        if (_parchment2.default.query(format) == null) {
          debug.warn('ignoring attaching to nonexistent format', format, input);
          return;
        }
      }
      var eventName = input.tagName === 'SELECT' ? 'change' : 'click';
      input.addEventListener(eventName, function (e) {
        var value = void 0;
        if (input.tagName === 'SELECT') {
          if (input.selectedIndex < 0) return;
          var selected = input.options[input.selectedIndex];
          if (selected.hasAttribute('selected')) {
            value = false;
          } else {
            value = selected.value || false;
          }
        } else {
          if (input.classList.contains('ql-active')) {
            value = false;
          } else {
            value = input.value || !input.hasAttribute('value');
          }
          e.preventDefault();
        }
        _this2.quill.focus();

        var _quill$selection$getR = _this2.quill.selection.getRange(),
            _quill$selection$getR2 = _slicedToArray(_quill$selection$getR, 1),
            range = _quill$selection$getR2[0];

        if (_this2.handlers[format] != null) {
          _this2.handlers[format].call(_this2, value);
        } else if (_parchment2.default.query(format).prototype instanceof _parchment2.default.Embed) {
          value = prompt('Enter ' + format);
          if (!value) return;
          _this2.quill.updateContents(new _quillDelta2.default().retain(range.index).delete(range.length).insert(_defineProperty({}, format, value)), _quill2.default.sources.USER);
        } else {
          _this2.quill.format(format, value, _quill2.default.sources.USER);
        }
        _this2.update(range);
      });
      // TODO use weakmap
      this.controls.push([format, input]);
    }
  }, {
    key: 'update',
    value: function update(range) {
      var formats = range == null ? {} : this.quill.getFormat(range);
      this.controls.forEach(function (pair) {
        var _pair = _slicedToArray(pair, 2),
            format = _pair[0],
            input = _pair[1];

        if (input.tagName === 'SELECT') {
          var option = void 0;
          if (range == null) {
            option = null;
          } else if (formats[format] == null) {
            option = input.querySelector('option[selected]');
          } else if (!Array.isArray(formats[format])) {
            var value = formats[format];
            if (typeof value === 'string') {
              value = value.replace(/\"/g, '\\"');
            }
            option = input.querySelector('option[value="' + value + '"]');
          }
          if (option == null) {
            input.value = ''; // TODO make configurable?
            input.selectedIndex = -1;
          } else {
            option.selected = true;
          }
        } else {
          if (range == null) {
            input.classList.remove('ql-active');
          } else if (input.hasAttribute('value')) {
            // both being null should match (default values)
            // '1' should match with 1 (headers)
            var isActive = formats[format] === input.getAttribute('value') || formats[format] != null && formats[format].toString() === input.getAttribute('value') || formats[format] == null && !input.getAttribute('value');
            input.classList.toggle('ql-active', isActive);
          } else {
            input.classList.toggle('ql-active', formats[format] != null);
          }
        }
      });
    }
  }]);

  return Toolbar;
}(_module2.default);

Toolbar.DEFAULTS = {};

function addButton(container, format, value) {
  var input = document.createElement('button');
  input.setAttribute('type', 'button');
  input.classList.add('ql-' + format);
  if (value != null) {
    input.value = value;
  }
  container.appendChild(input);
}

function addControls(container, groups) {
  if (!Array.isArray(groups[0])) {
    groups = [groups];
  }
  groups.forEach(function (controls) {
    var group = document.createElement('span');
    group.classList.add('ql-formats');
    controls.forEach(function (control) {
      if (typeof control === 'string') {
        addButton(group, control);
      } else {
        var format = Object.keys(control)[0];
        var value = control[format];
        if (Array.isArray(value)) {
          addSelect(group, format, value);
        } else {
          addButton(group, format, value);
        }
      }
    });
    container.appendChild(group);
  });
}

function addSelect(container, format, values) {
  var input = document.createElement('select');
  input.classList.add('ql-' + format);
  values.forEach(function (value) {
    var option = document.createElement('option');
    if (value !== false) {
      option.setAttribute('value', value);
    } else {
      option.setAttribute('selected', 'selected');
    }
    input.appendChild(option);
  });
  container.appendChild(input);
}

Toolbar.DEFAULTS = {
  container: null,
  handlers: {
    clean: function clean() {
      var _this3 = this;

      var range = this.quill.getSelection();
      if (range == null) return;
      if (range.length == 0) {
        var formats = this.quill.getFormat();
        Object.keys(formats).forEach(function (name) {
          // Clean functionality in existing apps only clean inline formats
          if (_parchment2.default.query(name, _parchment2.default.Scope.INLINE) != null) {
            _this3.quill.format(name, false);
          }
        });
      } else {
        this.quill.removeFormat(range, _quill2.default.sources.USER);
      }
    },
    direction: function direction(value) {
      var align = this.quill.getFormat()['align'];
      if (value === 'rtl' && align == null) {
        this.quill.format('align', 'right', _quill2.default.sources.USER);
      } else if (!value && align === 'right') {
        this.quill.format('align', false, _quill2.default.sources.USER);
      }
      this.quill.format('direction', value, _quill2.default.sources.USER);
    },
    indent: function indent(value) {
      var range = this.quill.getSelection();
      var formats = this.quill.getFormat(range);
      var indent = parseInt(formats.indent || 0);
      if (value === '+1' || value === '-1') {
        var modifier = value === '+1' ? 1 : -1;
        if (formats.direction === 'rtl') modifier *= -1;
        this.quill.format('indent', indent + modifier, _quill2.default.sources.USER);
      }
    },
    link: function link(value) {
      if (value === true) {
        value = prompt('Enter link URL:');
      }
      this.quill.format('link', value, _quill2.default.sources.USER);
    },
    list: function list(value) {
      var range = this.quill.getSelection();
      var formats = this.quill.getFormat(range);
      if (value === 'check') {
        if (formats['list'] === 'checked' || formats['list'] === 'unchecked') {
          this.quill.format('list', false, _quill2.default.sources.USER);
        } else {
          this.quill.format('list', 'unchecked', _quill2.default.sources.USER);
        }
      } else {
        this.quill.format('list', value, _quill2.default.sources.USER);
      }
    }
  }
};

exports.default = Toolbar;
exports.addControls = addControls;

/***/ }),
/* 58 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <polyline class=\"ql-even ql-stroke\" points=\"5 7 3 9 5 11\"></polyline> <polyline class=\"ql-even ql-stroke\" points=\"13 7 15 9 13 11\"></polyline> <line class=ql-stroke x1=10 x2=8 y1=5 y2=13></line> </svg>";

/***/ }),
/* 59 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _picker = __webpack_require__(28);

var _picker2 = _interopRequireDefault(_picker);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var ColorPicker = function (_Picker) {
  _inherits(ColorPicker, _Picker);

  function ColorPicker(select, label) {
    _classCallCheck(this, ColorPicker);

    var _this = _possibleConstructorReturn(this, (ColorPicker.__proto__ || Object.getPrototypeOf(ColorPicker)).call(this, select));

    _this.label.innerHTML = label;
    _this.container.classList.add('ql-color-picker');
    [].slice.call(_this.container.querySelectorAll('.ql-picker-item'), 0, 7).forEach(function (item) {
      item.classList.add('ql-primary');
    });
    return _this;
  }

  _createClass(ColorPicker, [{
    key: 'buildItem',
    value: function buildItem(option) {
      var item = _get(ColorPicker.prototype.__proto__ || Object.getPrototypeOf(ColorPicker.prototype), 'buildItem', this).call(this, option);
      item.style.backgroundColor = option.getAttribute('value') || '';
      return item;
    }
  }, {
    key: 'selectItem',
    value: function selectItem(item, trigger) {
      _get(ColorPicker.prototype.__proto__ || Object.getPrototypeOf(ColorPicker.prototype), 'selectItem', this).call(this, item, trigger);
      var colorLabel = this.label.querySelector('.ql-color-label');
      var value = item ? item.getAttribute('data-value') || '' : '';
      if (colorLabel) {
        if (colorLabel.tagName === 'line') {
          colorLabel.style.stroke = value;
        } else {
          colorLabel.style.fill = value;
        }
      }
    }
  }]);

  return ColorPicker;
}(_picker2.default);

exports.default = ColorPicker;

/***/ }),
/* 60 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _picker = __webpack_require__(28);

var _picker2 = _interopRequireDefault(_picker);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var IconPicker = function (_Picker) {
  _inherits(IconPicker, _Picker);

  function IconPicker(select, icons) {
    _classCallCheck(this, IconPicker);

    var _this = _possibleConstructorReturn(this, (IconPicker.__proto__ || Object.getPrototypeOf(IconPicker)).call(this, select));

    _this.container.classList.add('ql-icon-picker');
    [].forEach.call(_this.container.querySelectorAll('.ql-picker-item'), function (item) {
      item.innerHTML = icons[item.getAttribute('data-value') || ''];
    });
    _this.defaultItem = _this.container.querySelector('.ql-selected');
    _this.selectItem(_this.defaultItem);
    return _this;
  }

  _createClass(IconPicker, [{
    key: 'selectItem',
    value: function selectItem(item, trigger) {
      _get(IconPicker.prototype.__proto__ || Object.getPrototypeOf(IconPicker.prototype), 'selectItem', this).call(this, item, trigger);
      item = item || this.defaultItem;
      this.label.innerHTML = item.innerHTML;
    }
  }]);

  return IconPicker;
}(_picker2.default);

exports.default = IconPicker;

/***/ }),
/* 61 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Tooltip = function () {
  function Tooltip(quill, boundsContainer) {
    var _this = this;

    _classCallCheck(this, Tooltip);

    this.quill = quill;
    this.boundsContainer = boundsContainer || document.body;
    this.root = quill.addContainer('ql-tooltip');
    this.root.innerHTML = this.constructor.TEMPLATE;
    if (this.quill.root === this.quill.scrollingContainer) {
      this.quill.root.addEventListener('scroll', function () {
        _this.root.style.marginTop = -1 * _this.quill.root.scrollTop + 'px';
      });
    }
    this.hide();
  }

  _createClass(Tooltip, [{
    key: 'hide',
    value: function hide() {
      this.root.classList.add('ql-hidden');
    }
  }, {
    key: 'position',
    value: function position(reference) {
      var left = reference.left + reference.width / 2 - this.root.offsetWidth / 2;
      // root.scrollTop should be 0 if scrollContainer !== root
      var top = reference.bottom + this.quill.root.scrollTop;
      this.root.style.left = left + 'px';
      this.root.style.top = top + 'px';
      this.root.classList.remove('ql-flip');
      var containerBounds = this.boundsContainer.getBoundingClientRect();
      var rootBounds = this.root.getBoundingClientRect();
      var shift = 0;
      if (rootBounds.right > containerBounds.right) {
        shift = containerBounds.right - rootBounds.right;
        this.root.style.left = left + shift + 'px';
      }
      if (rootBounds.left < containerBounds.left) {
        shift = containerBounds.left - rootBounds.left;
        this.root.style.left = left + shift + 'px';
      }
      if (rootBounds.bottom > containerBounds.bottom) {
        var height = rootBounds.bottom - rootBounds.top;
        var verticalShift = reference.bottom - reference.top + height;
        this.root.style.top = top - verticalShift + 'px';
        this.root.classList.add('ql-flip');
      }
      return shift;
    }
  }, {
    key: 'show',
    value: function show() {
      this.root.classList.remove('ql-editing');
      this.root.classList.remove('ql-hidden');
    }
  }]);

  return Tooltip;
}();

exports.default = Tooltip;

/***/ }),
/* 62 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _extend = __webpack_require__(3);

var _extend2 = _interopRequireDefault(_extend);

var _emitter = __webpack_require__(8);

var _emitter2 = _interopRequireDefault(_emitter);

var _base = __webpack_require__(43);

var _base2 = _interopRequireDefault(_base);

var _link = __webpack_require__(27);

var _link2 = _interopRequireDefault(_link);

var _selection = __webpack_require__(15);

var _icons = __webpack_require__(41);

var _icons2 = _interopRequireDefault(_icons);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var TOOLBAR_CONFIG = [[{ header: ['1', '2', '3', false] }], ['bold', 'italic', 'underline', 'link'], [{ list: 'ordered' }, { list: 'bullet' }], ['clean']];

var SnowTheme = function (_BaseTheme) {
  _inherits(SnowTheme, _BaseTheme);

  function SnowTheme(quill, options) {
    _classCallCheck(this, SnowTheme);

    if (options.modules.toolbar != null && options.modules.toolbar.container == null) {
      options.modules.toolbar.container = TOOLBAR_CONFIG;
    }

    var _this = _possibleConstructorReturn(this, (SnowTheme.__proto__ || Object.getPrototypeOf(SnowTheme)).call(this, quill, options));

    _this.quill.container.classList.add('ql-snow');
    return _this;
  }

  _createClass(SnowTheme, [{
    key: 'extendToolbar',
    value: function extendToolbar(toolbar) {
      toolbar.container.classList.add('ql-snow');
      this.buildButtons([].slice.call(toolbar.container.querySelectorAll('button')), _icons2.default);
      this.buildPickers([].slice.call(toolbar.container.querySelectorAll('select')), _icons2.default);
      this.tooltip = new SnowTooltip(this.quill, this.options.bounds);
      if (toolbar.container.querySelector('.ql-link')) {
        this.quill.keyboard.addBinding({ key: 'K', shortKey: true }, function (range, context) {
          toolbar.handlers['link'].call(toolbar, !context.format.link);
        });
      }
    }
  }]);

  return SnowTheme;
}(_base2.default);

SnowTheme.DEFAULTS = (0, _extend2.default)(true, {}, _base2.default.DEFAULTS, {
  modules: {
    toolbar: {
      handlers: {
        link: function link(value) {
          if (value) {
            var range = this.quill.getSelection();
            if (range == null || range.length == 0) return;
            var preview = this.quill.getText(range);
            if (/^\S+@\S+\.\S+$/.test(preview) && preview.indexOf('mailto:') !== 0) {
              preview = 'mailto:' + preview;
            }
            var tooltip = this.quill.theme.tooltip;
            tooltip.edit('link', preview);
          } else {
            this.quill.format('link', false);
          }
        }
      }
    }
  }
});

var SnowTooltip = function (_BaseTooltip) {
  _inherits(SnowTooltip, _BaseTooltip);

  function SnowTooltip(quill, bounds) {
    _classCallCheck(this, SnowTooltip);

    var _this2 = _possibleConstructorReturn(this, (SnowTooltip.__proto__ || Object.getPrototypeOf(SnowTooltip)).call(this, quill, bounds));

    _this2.preview = _this2.root.querySelector('a.ql-preview');
    return _this2;
  }

  _createClass(SnowTooltip, [{
    key: 'listen',
    value: function listen() {
      var _this3 = this;

      _get(SnowTooltip.prototype.__proto__ || Object.getPrototypeOf(SnowTooltip.prototype), 'listen', this).call(this);
      this.root.querySelector('a.ql-action').addEventListener('click', function (event) {
        if (_this3.root.classList.contains('ql-editing')) {
          _this3.save();
        } else {
          _this3.edit('link', _this3.preview.textContent);
        }
        event.preventDefault();
      });
      this.root.querySelector('a.ql-remove').addEventListener('click', function (event) {
        if (_this3.linkRange != null) {
          var range = _this3.linkRange;
          _this3.restoreFocus();
          _this3.quill.formatText(range, 'link', false, _emitter2.default.sources.USER);
          delete _this3.linkRange;
        }
        event.preventDefault();
        _this3.hide();
      });
      this.quill.on(_emitter2.default.events.SELECTION_CHANGE, function (range, oldRange, source) {
        if (range == null) return;
        if (range.length === 0 && source === _emitter2.default.sources.USER) {
          var _quill$scroll$descend = _this3.quill.scroll.descendant(_link2.default, range.index),
              _quill$scroll$descend2 = _slicedToArray(_quill$scroll$descend, 2),
              link = _quill$scroll$descend2[0],
              offset = _quill$scroll$descend2[1];

          if (link != null) {
            _this3.linkRange = new _selection.Range(range.index - offset, link.length());
            var preview = _link2.default.formats(link.domNode);
            _this3.preview.textContent = preview;
            _this3.preview.setAttribute('href', preview);
            _this3.show();
            _this3.position(_this3.quill.getBounds(_this3.linkRange));
            return;
          }
        } else {
          delete _this3.linkRange;
        }
        _this3.hide();
      });
    }
  }, {
    key: 'show',
    value: function show() {
      _get(SnowTooltip.prototype.__proto__ || Object.getPrototypeOf(SnowTooltip.prototype), 'show', this).call(this);
      this.root.removeAttribute('data-mode');
    }
  }]);

  return SnowTooltip;
}(_base.BaseTooltip);

SnowTooltip.TEMPLATE = ['<a class="ql-preview" rel="noopener noreferrer" target="_blank" href="about:blank"></a>', '<input type="text" data-formula="e=mc^2" data-link="https://quilljs.com" data-video="Embed URL">', '<a class="ql-action"></a>', '<a class="ql-remove"></a>'].join('');

exports.default = SnowTheme;

/***/ }),
/* 63 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _core = __webpack_require__(29);

var _core2 = _interopRequireDefault(_core);

var _align = __webpack_require__(36);

var _direction = __webpack_require__(38);

var _indent = __webpack_require__(64);

var _blockquote = __webpack_require__(65);

var _blockquote2 = _interopRequireDefault(_blockquote);

var _header = __webpack_require__(66);

var _header2 = _interopRequireDefault(_header);

var _list = __webpack_require__(67);

var _list2 = _interopRequireDefault(_list);

var _background = __webpack_require__(37);

var _color = __webpack_require__(26);

var _font = __webpack_require__(39);

var _size = __webpack_require__(40);

var _bold = __webpack_require__(56);

var _bold2 = _interopRequireDefault(_bold);

var _italic = __webpack_require__(68);

var _italic2 = _interopRequireDefault(_italic);

var _link = __webpack_require__(27);

var _link2 = _interopRequireDefault(_link);

var _script = __webpack_require__(69);

var _script2 = _interopRequireDefault(_script);

var _strike = __webpack_require__(70);

var _strike2 = _interopRequireDefault(_strike);

var _underline = __webpack_require__(71);

var _underline2 = _interopRequireDefault(_underline);

var _image = __webpack_require__(72);

var _image2 = _interopRequireDefault(_image);

var _video = __webpack_require__(73);

var _video2 = _interopRequireDefault(_video);

var _code = __webpack_require__(13);

var _code2 = _interopRequireDefault(_code);

var _formula = __webpack_require__(74);

var _formula2 = _interopRequireDefault(_formula);

var _syntax = __webpack_require__(75);

var _syntax2 = _interopRequireDefault(_syntax);

var _toolbar = __webpack_require__(57);

var _toolbar2 = _interopRequireDefault(_toolbar);

var _icons = __webpack_require__(41);

var _icons2 = _interopRequireDefault(_icons);

var _picker = __webpack_require__(28);

var _picker2 = _interopRequireDefault(_picker);

var _colorPicker = __webpack_require__(59);

var _colorPicker2 = _interopRequireDefault(_colorPicker);

var _iconPicker = __webpack_require__(60);

var _iconPicker2 = _interopRequireDefault(_iconPicker);

var _tooltip = __webpack_require__(61);

var _tooltip2 = _interopRequireDefault(_tooltip);

var _bubble = __webpack_require__(108);

var _bubble2 = _interopRequireDefault(_bubble);

var _snow = __webpack_require__(62);

var _snow2 = _interopRequireDefault(_snow);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

_core2.default.register({
  'attributors/attribute/direction': _direction.DirectionAttribute,

  'attributors/class/align': _align.AlignClass,
  'attributors/class/background': _background.BackgroundClass,
  'attributors/class/color': _color.ColorClass,
  'attributors/class/direction': _direction.DirectionClass,
  'attributors/class/font': _font.FontClass,
  'attributors/class/size': _size.SizeClass,

  'attributors/style/align': _align.AlignStyle,
  'attributors/style/background': _background.BackgroundStyle,
  'attributors/style/color': _color.ColorStyle,
  'attributors/style/direction': _direction.DirectionStyle,
  'attributors/style/font': _font.FontStyle,
  'attributors/style/size': _size.SizeStyle
}, true);

_core2.default.register({
  'formats/align': _align.AlignClass,
  'formats/direction': _direction.DirectionClass,
  'formats/indent': _indent.IndentClass,

  'formats/background': _background.BackgroundStyle,
  'formats/color': _color.ColorStyle,
  'formats/font': _font.FontClass,
  'formats/size': _size.SizeClass,

  'formats/blockquote': _blockquote2.default,
  'formats/code-block': _code2.default,
  'formats/header': _header2.default,
  'formats/list': _list2.default,

  'formats/bold': _bold2.default,
  'formats/code': _code.Code,
  'formats/italic': _italic2.default,
  'formats/link': _link2.default,
  'formats/script': _script2.default,
  'formats/strike': _strike2.default,
  'formats/underline': _underline2.default,

  'formats/image': _image2.default,
  'formats/video': _video2.default,

  'formats/list/item': _list.ListItem,

  'modules/formula': _formula2.default,
  'modules/syntax': _syntax2.default,
  'modules/toolbar': _toolbar2.default,

  'themes/bubble': _bubble2.default,
  'themes/snow': _snow2.default,

  'ui/icons': _icons2.default,
  'ui/picker': _picker2.default,
  'ui/icon-picker': _iconPicker2.default,
  'ui/color-picker': _colorPicker2.default,
  'ui/tooltip': _tooltip2.default
}, true);

exports.default = _core2.default;

/***/ }),
/* 64 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.IndentClass = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var IdentAttributor = function (_Parchment$Attributor) {
  _inherits(IdentAttributor, _Parchment$Attributor);

  function IdentAttributor() {
    _classCallCheck(this, IdentAttributor);

    return _possibleConstructorReturn(this, (IdentAttributor.__proto__ || Object.getPrototypeOf(IdentAttributor)).apply(this, arguments));
  }

  _createClass(IdentAttributor, [{
    key: 'add',
    value: function add(node, value) {
      if (value === '+1' || value === '-1') {
        var indent = this.value(node) || 0;
        value = value === '+1' ? indent + 1 : indent - 1;
      }
      if (value === 0) {
        this.remove(node);
        return true;
      } else {
        return _get(IdentAttributor.prototype.__proto__ || Object.getPrototypeOf(IdentAttributor.prototype), 'add', this).call(this, node, value);
      }
    }
  }, {
    key: 'canAdd',
    value: function canAdd(node, value) {
      return _get(IdentAttributor.prototype.__proto__ || Object.getPrototypeOf(IdentAttributor.prototype), 'canAdd', this).call(this, node, value) || _get(IdentAttributor.prototype.__proto__ || Object.getPrototypeOf(IdentAttributor.prototype), 'canAdd', this).call(this, node, parseInt(value));
    }
  }, {
    key: 'value',
    value: function value(node) {
      return parseInt(_get(IdentAttributor.prototype.__proto__ || Object.getPrototypeOf(IdentAttributor.prototype), 'value', this).call(this, node)) || undefined; // Don't return NaN
    }
  }]);

  return IdentAttributor;
}(_parchment2.default.Attributor.Class);

var IndentClass = new IdentAttributor('indent', 'ql-indent', {
  scope: _parchment2.default.Scope.BLOCK,
  whitelist: [1, 2, 3, 4, 5, 6, 7, 8]
});

exports.IndentClass = IndentClass;

/***/ }),
/* 65 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Blockquote = function (_Block) {
  _inherits(Blockquote, _Block);

  function Blockquote() {
    _classCallCheck(this, Blockquote);

    return _possibleConstructorReturn(this, (Blockquote.__proto__ || Object.getPrototypeOf(Blockquote)).apply(this, arguments));
  }

  return Blockquote;
}(_block2.default);

Blockquote.blotName = 'blockquote';
Blockquote.tagName = 'blockquote';

exports.default = Blockquote;

/***/ }),
/* 66 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Header = function (_Block) {
  _inherits(Header, _Block);

  function Header() {
    _classCallCheck(this, Header);

    return _possibleConstructorReturn(this, (Header.__proto__ || Object.getPrototypeOf(Header)).apply(this, arguments));
  }

  _createClass(Header, null, [{
    key: 'formats',
    value: function formats(domNode) {
      return this.tagName.indexOf(domNode.tagName) + 1;
    }
  }]);

  return Header;
}(_block2.default);

Header.blotName = 'header';
Header.tagName = ['H1', 'H2', 'H3', 'H4', 'H5', 'H6'];

exports.default = Header;

/***/ }),
/* 67 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.ListItem = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _block = __webpack_require__(4);

var _block2 = _interopRequireDefault(_block);

var _container = __webpack_require__(25);

var _container2 = _interopRequireDefault(_container);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var ListItem = function (_Block) {
  _inherits(ListItem, _Block);

  function ListItem() {
    _classCallCheck(this, ListItem);

    return _possibleConstructorReturn(this, (ListItem.__proto__ || Object.getPrototypeOf(ListItem)).apply(this, arguments));
  }

  _createClass(ListItem, [{
    key: 'format',
    value: function format(name, value) {
      if (name === List.blotName && !value) {
        this.replaceWith(_parchment2.default.create(this.statics.scope));
      } else {
        _get(ListItem.prototype.__proto__ || Object.getPrototypeOf(ListItem.prototype), 'format', this).call(this, name, value);
      }
    }
  }, {
    key: 'remove',
    value: function remove() {
      if (this.prev == null && this.next == null) {
        this.parent.remove();
      } else {
        _get(ListItem.prototype.__proto__ || Object.getPrototypeOf(ListItem.prototype), 'remove', this).call(this);
      }
    }
  }, {
    key: 'replaceWith',
    value: function replaceWith(name, value) {
      this.parent.isolate(this.offset(this.parent), this.length());
      if (name === this.parent.statics.blotName) {
        this.parent.replaceWith(name, value);
        return this;
      } else {
        this.parent.unwrap();
        return _get(ListItem.prototype.__proto__ || Object.getPrototypeOf(ListItem.prototype), 'replaceWith', this).call(this, name, value);
      }
    }
  }], [{
    key: 'formats',
    value: function formats(domNode) {
      return domNode.tagName === this.tagName ? undefined : _get(ListItem.__proto__ || Object.getPrototypeOf(ListItem), 'formats', this).call(this, domNode);
    }
  }]);

  return ListItem;
}(_block2.default);

ListItem.blotName = 'list-item';
ListItem.tagName = 'LI';

var List = function (_Container) {
  _inherits(List, _Container);

  _createClass(List, null, [{
    key: 'create',
    value: function create(value) {
      var tagName = value === 'ordered' ? 'OL' : 'UL';
      var node = _get(List.__proto__ || Object.getPrototypeOf(List), 'create', this).call(this, tagName);
      if (value === 'checked' || value === 'unchecked') {
        node.setAttribute('data-checked', value === 'checked');
      }
      return node;
    }
  }, {
    key: 'formats',
    value: function formats(domNode) {
      if (domNode.tagName === 'OL') return 'ordered';
      if (domNode.tagName === 'UL') {
        if (domNode.hasAttribute('data-checked')) {
          return domNode.getAttribute('data-checked') === 'true' ? 'checked' : 'unchecked';
        } else {
          return 'bullet';
        }
      }
      return undefined;
    }
  }]);

  function List(domNode) {
    _classCallCheck(this, List);

    var _this2 = _possibleConstructorReturn(this, (List.__proto__ || Object.getPrototypeOf(List)).call(this, domNode));

    var listEventHandler = function listEventHandler(e) {
      if (e.target.parentNode !== domNode) return;
      var format = _this2.statics.formats(domNode);
      var blot = _parchment2.default.find(e.target);
      if (format === 'checked') {
        blot.format('list', 'unchecked');
      } else if (format === 'unchecked') {
        blot.format('list', 'checked');
      }
    };

    domNode.addEventListener('touchstart', listEventHandler);
    domNode.addEventListener('mousedown', listEventHandler);
    return _this2;
  }

  _createClass(List, [{
    key: 'format',
    value: function format(name, value) {
      if (this.children.length > 0) {
        this.children.tail.format(name, value);
      }
    }
  }, {
    key: 'formats',
    value: function formats() {
      // We don't inherit from FormatBlot
      return _defineProperty({}, this.statics.blotName, this.statics.formats(this.domNode));
    }
  }, {
    key: 'insertBefore',
    value: function insertBefore(blot, ref) {
      if (blot instanceof ListItem) {
        _get(List.prototype.__proto__ || Object.getPrototypeOf(List.prototype), 'insertBefore', this).call(this, blot, ref);
      } else {
        var index = ref == null ? this.length() : ref.offset(this);
        var after = this.split(index);
        after.parent.insertBefore(blot, after);
      }
    }
  }, {
    key: 'optimize',
    value: function optimize(context) {
      _get(List.prototype.__proto__ || Object.getPrototypeOf(List.prototype), 'optimize', this).call(this, context);
      var next = this.next;
      if (next != null && next.prev === this && next.statics.blotName === this.statics.blotName && next.domNode.tagName === this.domNode.tagName && next.domNode.getAttribute('data-checked') === this.domNode.getAttribute('data-checked')) {
        next.moveChildren(this);
        next.remove();
      }
    }
  }, {
    key: 'replace',
    value: function replace(target) {
      if (target.statics.blotName !== this.statics.blotName) {
        var item = _parchment2.default.create(this.statics.defaultChild);
        target.moveChildren(item);
        this.appendChild(item);
      }
      _get(List.prototype.__proto__ || Object.getPrototypeOf(List.prototype), 'replace', this).call(this, target);
    }
  }]);

  return List;
}(_container2.default);

List.blotName = 'list';
List.scope = _parchment2.default.Scope.BLOCK_BLOT;
List.tagName = ['OL', 'UL'];
List.defaultChild = 'list-item';
List.allowedChildren = [ListItem];

exports.ListItem = ListItem;
exports.default = List;

/***/ }),
/* 68 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _bold = __webpack_require__(56);

var _bold2 = _interopRequireDefault(_bold);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Italic = function (_Bold) {
  _inherits(Italic, _Bold);

  function Italic() {
    _classCallCheck(this, Italic);

    return _possibleConstructorReturn(this, (Italic.__proto__ || Object.getPrototypeOf(Italic)).apply(this, arguments));
  }

  return Italic;
}(_bold2.default);

Italic.blotName = 'italic';
Italic.tagName = ['EM', 'I'];

exports.default = Italic;

/***/ }),
/* 69 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Script = function (_Inline) {
  _inherits(Script, _Inline);

  function Script() {
    _classCallCheck(this, Script);

    return _possibleConstructorReturn(this, (Script.__proto__ || Object.getPrototypeOf(Script)).apply(this, arguments));
  }

  _createClass(Script, null, [{
    key: 'create',
    value: function create(value) {
      if (value === 'super') {
        return document.createElement('sup');
      } else if (value === 'sub') {
        return document.createElement('sub');
      } else {
        return _get(Script.__proto__ || Object.getPrototypeOf(Script), 'create', this).call(this, value);
      }
    }
  }, {
    key: 'formats',
    value: function formats(domNode) {
      if (domNode.tagName === 'SUB') return 'sub';
      if (domNode.tagName === 'SUP') return 'super';
      return undefined;
    }
  }]);

  return Script;
}(_inline2.default);

Script.blotName = 'script';
Script.tagName = ['SUB', 'SUP'];

exports.default = Script;

/***/ }),
/* 70 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Strike = function (_Inline) {
  _inherits(Strike, _Inline);

  function Strike() {
    _classCallCheck(this, Strike);

    return _possibleConstructorReturn(this, (Strike.__proto__ || Object.getPrototypeOf(Strike)).apply(this, arguments));
  }

  return Strike;
}(_inline2.default);

Strike.blotName = 'strike';
Strike.tagName = 'S';

exports.default = Strike;

/***/ }),
/* 71 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _inline = __webpack_require__(6);

var _inline2 = _interopRequireDefault(_inline);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Underline = function (_Inline) {
  _inherits(Underline, _Inline);

  function Underline() {
    _classCallCheck(this, Underline);

    return _possibleConstructorReturn(this, (Underline.__proto__ || Object.getPrototypeOf(Underline)).apply(this, arguments));
  }

  return Underline;
}(_inline2.default);

Underline.blotName = 'underline';
Underline.tagName = 'U';

exports.default = Underline;

/***/ }),
/* 72 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _link = __webpack_require__(27);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var ATTRIBUTES = ['alt', 'height', 'width'];

var Image = function (_Parchment$Embed) {
  _inherits(Image, _Parchment$Embed);

  function Image() {
    _classCallCheck(this, Image);

    return _possibleConstructorReturn(this, (Image.__proto__ || Object.getPrototypeOf(Image)).apply(this, arguments));
  }

  _createClass(Image, [{
    key: 'format',
    value: function format(name, value) {
      if (ATTRIBUTES.indexOf(name) > -1) {
        if (value) {
          this.domNode.setAttribute(name, value);
        } else {
          this.domNode.removeAttribute(name);
        }
      } else {
        _get(Image.prototype.__proto__ || Object.getPrototypeOf(Image.prototype), 'format', this).call(this, name, value);
      }
    }
  }], [{
    key: 'create',
    value: function create(value) {
      var node = _get(Image.__proto__ || Object.getPrototypeOf(Image), 'create', this).call(this, value);
      if (typeof value === 'string') {
        node.setAttribute('src', this.sanitize(value));
      }
      return node;
    }
  }, {
    key: 'formats',
    value: function formats(domNode) {
      return ATTRIBUTES.reduce(function (formats, attribute) {
        if (domNode.hasAttribute(attribute)) {
          formats[attribute] = domNode.getAttribute(attribute);
        }
        return formats;
      }, {});
    }
  }, {
    key: 'match',
    value: function match(url) {
      return (/\.(jpe?g|gif|png)$/.test(url) || /^data:image\/.+;base64/.test(url)
      );
    }
  }, {
    key: 'sanitize',
    value: function sanitize(url) {
      return (0, _link.sanitize)(url, ['http', 'https', 'data']) ? url : '//:0';
    }
  }, {
    key: 'value',
    value: function value(domNode) {
      return domNode.getAttribute('src');
    }
  }]);

  return Image;
}(_parchment2.default.Embed);

Image.blotName = 'image';
Image.tagName = 'IMG';

exports.default = Image;

/***/ }),
/* 73 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _block = __webpack_require__(4);

var _link = __webpack_require__(27);

var _link2 = _interopRequireDefault(_link);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var ATTRIBUTES = ['height', 'width'];

var Video = function (_BlockEmbed) {
  _inherits(Video, _BlockEmbed);

  function Video() {
    _classCallCheck(this, Video);

    return _possibleConstructorReturn(this, (Video.__proto__ || Object.getPrototypeOf(Video)).apply(this, arguments));
  }

  _createClass(Video, [{
    key: 'format',
    value: function format(name, value) {
      if (ATTRIBUTES.indexOf(name) > -1) {
        if (value) {
          this.domNode.setAttribute(name, value);
        } else {
          this.domNode.removeAttribute(name);
        }
      } else {
        _get(Video.prototype.__proto__ || Object.getPrototypeOf(Video.prototype), 'format', this).call(this, name, value);
      }
    }
  }], [{
    key: 'create',
    value: function create(value) {
      var node = _get(Video.__proto__ || Object.getPrototypeOf(Video), 'create', this).call(this, value);
      node.setAttribute('frameborder', '0');
      node.setAttribute('allowfullscreen', true);
      node.setAttribute('src', this.sanitize(value));
      return node;
    }
  }, {
    key: 'formats',
    value: function formats(domNode) {
      return ATTRIBUTES.reduce(function (formats, attribute) {
        if (domNode.hasAttribute(attribute)) {
          formats[attribute] = domNode.getAttribute(attribute);
        }
        return formats;
      }, {});
    }
  }, {
    key: 'sanitize',
    value: function sanitize(url) {
      return _link2.default.sanitize(url);
    }
  }, {
    key: 'value',
    value: function value(domNode) {
      return domNode.getAttribute('src');
    }
  }]);

  return Video;
}(_block.BlockEmbed);

Video.blotName = 'video';
Video.className = 'ql-video';
Video.tagName = 'IFRAME';

exports.default = Video;

/***/ }),
/* 74 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.FormulaBlot = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _embed = __webpack_require__(35);

var _embed2 = _interopRequireDefault(_embed);

var _quill = __webpack_require__(5);

var _quill2 = _interopRequireDefault(_quill);

var _module = __webpack_require__(9);

var _module2 = _interopRequireDefault(_module);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var FormulaBlot = function (_Embed) {
  _inherits(FormulaBlot, _Embed);

  function FormulaBlot() {
    _classCallCheck(this, FormulaBlot);

    return _possibleConstructorReturn(this, (FormulaBlot.__proto__ || Object.getPrototypeOf(FormulaBlot)).apply(this, arguments));
  }

  _createClass(FormulaBlot, null, [{
    key: 'create',
    value: function create(value) {
      var node = _get(FormulaBlot.__proto__ || Object.getPrototypeOf(FormulaBlot), 'create', this).call(this, value);
      if (typeof value === 'string') {
        window.katex.render(value, node, {
          throwOnError: false,
          errorColor: '#f00'
        });
        node.setAttribute('data-value', value);
      }
      return node;
    }
  }, {
    key: 'value',
    value: function value(domNode) {
      return domNode.getAttribute('data-value');
    }
  }]);

  return FormulaBlot;
}(_embed2.default);

FormulaBlot.blotName = 'formula';
FormulaBlot.className = 'ql-formula';
FormulaBlot.tagName = 'SPAN';

var Formula = function (_Module) {
  _inherits(Formula, _Module);

  _createClass(Formula, null, [{
    key: 'register',
    value: function register() {
      _quill2.default.register(FormulaBlot, true);
    }
  }]);

  function Formula() {
    _classCallCheck(this, Formula);

    var _this2 = _possibleConstructorReturn(this, (Formula.__proto__ || Object.getPrototypeOf(Formula)).call(this));

    if (window.katex == null) {
      throw new Error('Formula module requires KaTeX.');
    }
    return _this2;
  }

  return Formula;
}(_module2.default);

exports.FormulaBlot = FormulaBlot;
exports.default = Formula;

/***/ }),
/* 75 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.CodeToken = exports.CodeBlock = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _parchment = __webpack_require__(0);

var _parchment2 = _interopRequireDefault(_parchment);

var _quill = __webpack_require__(5);

var _quill2 = _interopRequireDefault(_quill);

var _module = __webpack_require__(9);

var _module2 = _interopRequireDefault(_module);

var _code = __webpack_require__(13);

var _code2 = _interopRequireDefault(_code);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var SyntaxCodeBlock = function (_CodeBlock) {
  _inherits(SyntaxCodeBlock, _CodeBlock);

  function SyntaxCodeBlock() {
    _classCallCheck(this, SyntaxCodeBlock);

    return _possibleConstructorReturn(this, (SyntaxCodeBlock.__proto__ || Object.getPrototypeOf(SyntaxCodeBlock)).apply(this, arguments));
  }

  _createClass(SyntaxCodeBlock, [{
    key: 'replaceWith',
    value: function replaceWith(block) {
      this.domNode.textContent = this.domNode.textContent;
      this.attach();
      _get(SyntaxCodeBlock.prototype.__proto__ || Object.getPrototypeOf(SyntaxCodeBlock.prototype), 'replaceWith', this).call(this, block);
    }
  }, {
    key: 'highlight',
    value: function highlight(_highlight) {
      var text = this.domNode.textContent;
      if (this.cachedText !== text) {
        if (text.trim().length > 0 || this.cachedText == null) {
          this.domNode.innerHTML = _highlight(text);
          this.domNode.normalize();
          this.attach();
        }
        this.cachedText = text;
      }
    }
  }]);

  return SyntaxCodeBlock;
}(_code2.default);

SyntaxCodeBlock.className = 'ql-syntax';

var CodeToken = new _parchment2.default.Attributor.Class('token', 'hljs', {
  scope: _parchment2.default.Scope.INLINE
});

var Syntax = function (_Module) {
  _inherits(Syntax, _Module);

  _createClass(Syntax, null, [{
    key: 'register',
    value: function register() {
      _quill2.default.register(CodeToken, true);
      _quill2.default.register(SyntaxCodeBlock, true);
    }
  }]);

  function Syntax(quill, options) {
    _classCallCheck(this, Syntax);

    var _this2 = _possibleConstructorReturn(this, (Syntax.__proto__ || Object.getPrototypeOf(Syntax)).call(this, quill, options));

    if (typeof _this2.options.highlight !== 'function') {
      throw new Error('Syntax module requires highlight.js. Please include the library on the page before Quill.');
    }
    var timer = null;
    _this2.quill.on(_quill2.default.events.SCROLL_OPTIMIZE, function () {
      clearTimeout(timer);
      timer = setTimeout(function () {
        _this2.highlight();
        timer = null;
      }, _this2.options.interval);
    });
    _this2.highlight();
    return _this2;
  }

  _createClass(Syntax, [{
    key: 'highlight',
    value: function highlight() {
      var _this3 = this;

      if (this.quill.selection.composing) return;
      this.quill.update(_quill2.default.sources.USER);
      var range = this.quill.getSelection();
      this.quill.scroll.descendants(SyntaxCodeBlock).forEach(function (code) {
        code.highlight(_this3.options.highlight);
      });
      this.quill.update(_quill2.default.sources.SILENT);
      if (range != null) {
        this.quill.setSelection(range, _quill2.default.sources.SILENT);
      }
    }
  }]);

  return Syntax;
}(_module2.default);

Syntax.DEFAULTS = {
  highlight: function () {
    if (window.hljs == null) return null;
    return function (text) {
      var result = window.hljs.highlightAuto(text);
      return result.value;
    };
  }(),
  interval: 1000
};

exports.CodeBlock = SyntaxCodeBlock;
exports.CodeToken = CodeToken;
exports.default = Syntax;

/***/ }),
/* 76 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=3 x2=15 y1=9 y2=9></line> <line class=ql-stroke x1=3 x2=13 y1=14 y2=14></line> <line class=ql-stroke x1=3 x2=9 y1=4 y2=4></line> </svg>";

/***/ }),
/* 77 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=15 x2=3 y1=9 y2=9></line> <line class=ql-stroke x1=14 x2=4 y1=14 y2=14></line> <line class=ql-stroke x1=12 x2=6 y1=4 y2=4></line> </svg>";

/***/ }),
/* 78 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=15 x2=3 y1=9 y2=9></line> <line class=ql-stroke x1=15 x2=5 y1=14 y2=14></line> <line class=ql-stroke x1=15 x2=9 y1=4 y2=4></line> </svg>";

/***/ }),
/* 79 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=15 x2=3 y1=9 y2=9></line> <line class=ql-stroke x1=15 x2=3 y1=14 y2=14></line> <line class=ql-stroke x1=15 x2=3 y1=4 y2=4></line> </svg>";

/***/ }),
/* 80 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <g class=\"ql-fill ql-color-label\"> <polygon points=\"6 6.868 6 6 5 6 5 7 5.942 7 6 6.868\"></polygon> <rect height=1 width=1 x=4 y=4></rect> <polygon points=\"6.817 5 6 5 6 6 6.38 6 6.817 5\"></polygon> <rect height=1 width=1 x=2 y=6></rect> <rect height=1 width=1 x=3 y=5></rect> <rect height=1 width=1 x=4 y=7></rect> <polygon points=\"4 11.439 4 11 3 11 3 12 3.755 12 4 11.439\"></polygon> <rect height=1 width=1 x=2 y=12></rect> <rect height=1 width=1 x=2 y=9></rect> <rect height=1 width=1 x=2 y=15></rect> <polygon points=\"4.63 10 4 10 4 11 4.192 11 4.63 10\"></polygon> <rect height=1 width=1 x=3 y=8></rect> <path d=M10.832,4.2L11,4.582V4H10.708A1.948,1.948,0,0,1,10.832,4.2Z></path> <path d=M7,4.582L7.168,4.2A1.929,1.929,0,0,1,7.292,4H7V4.582Z></path> <path d=M8,13H7.683l-0.351.8a1.933,1.933,0,0,1-.124.2H8V13Z></path> <rect height=1 width=1 x=12 y=2></rect> <rect height=1 width=1 x=11 y=3></rect> <path d=M9,3H8V3.282A1.985,1.985,0,0,1,9,3Z></path> <rect height=1 width=1 x=2 y=3></rect> <rect height=1 width=1 x=6 y=2></rect> <rect height=1 width=1 x=3 y=2></rect> <rect height=1 width=1 x=5 y=3></rect> <rect height=1 width=1 x=9 y=2></rect> <rect height=1 width=1 x=15 y=14></rect> <polygon points=\"13.447 10.174 13.469 10.225 13.472 10.232 13.808 11 14 11 14 10 13.37 10 13.447 10.174\"></polygon> <rect height=1 width=1 x=13 y=7></rect> <rect height=1 width=1 x=15 y=5></rect> <rect height=1 width=1 x=14 y=6></rect> <rect height=1 width=1 x=15 y=8></rect> <rect height=1 width=1 x=14 y=9></rect> <path d=M3.775,14H3v1H4V14.314A1.97,1.97,0,0,1,3.775,14Z></path> <rect height=1 width=1 x=14 y=3></rect> <polygon points=\"12 6.868 12 6 11.62 6 12 6.868\"></polygon> <rect height=1 width=1 x=15 y=2></rect> <rect height=1 width=1 x=12 y=5></rect> <rect height=1 width=1 x=13 y=4></rect> <polygon points=\"12.933 9 13 9 13 8 12.495 8 12.933 9\"></polygon> <rect height=1 width=1 x=9 y=14></rect> <rect height=1 width=1 x=8 y=15></rect> <path d=M6,14.926V15H7V14.316A1.993,1.993,0,0,1,6,14.926Z></path> <rect height=1 width=1 x=5 y=15></rect> <path d=M10.668,13.8L10.317,13H10v1h0.792A1.947,1.947,0,0,1,10.668,13.8Z></path> <rect height=1 width=1 x=11 y=15></rect> <path d=M14.332,12.2a1.99,1.99,0,0,1,.166.8H15V12H14.245Z></path> <rect height=1 width=1 x=14 y=15></rect> <rect height=1 width=1 x=15 y=11></rect> </g> <polyline class=ql-stroke points=\"5.5 13 9 5 12.5 13\"></polyline> <line class=ql-stroke x1=11.63 x2=6.38 y1=11 y2=11></line> </svg>";

/***/ }),
/* 81 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <rect class=\"ql-fill ql-stroke\" height=3 width=3 x=4 y=5></rect> <rect class=\"ql-fill ql-stroke\" height=3 width=3 x=11 y=5></rect> <path class=\"ql-even ql-fill ql-stroke\" d=M7,8c0,4.031-3,5-3,5></path> <path class=\"ql-even ql-fill ql-stroke\" d=M14,8c0,4.031-3,5-3,5></path> </svg>";

/***/ }),
/* 82 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-stroke d=M5,4H9.5A2.5,2.5,0,0,1,12,6.5v0A2.5,2.5,0,0,1,9.5,9H5A0,0,0,0,1,5,9V4A0,0,0,0,1,5,4Z></path> <path class=ql-stroke d=M5,9h5.5A2.5,2.5,0,0,1,13,11.5v0A2.5,2.5,0,0,1,10.5,14H5a0,0,0,0,1,0,0V9A0,0,0,0,1,5,9Z></path> </svg>";

/***/ }),
/* 83 */
/***/ (function(module, exports) {

module.exports = "<svg class=\"\" viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=5 x2=13 y1=3 y2=3></line> <line class=ql-stroke x1=6 x2=9.35 y1=12 y2=3></line> <line class=ql-stroke x1=11 x2=15 y1=11 y2=15></line> <line class=ql-stroke x1=15 x2=11 y1=11 y2=15></line> <rect class=ql-fill height=1 rx=0.5 ry=0.5 width=7 x=2 y=14></rect> </svg>";

/***/ }),
/* 84 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=\"ql-color-label ql-stroke ql-transparent\" x1=3 x2=15 y1=15 y2=15></line> <polyline class=ql-stroke points=\"5.5 11 9 3 12.5 11\"></polyline> <line class=ql-stroke x1=11.63 x2=6.38 y1=9 y2=9></line> </svg>";

/***/ }),
/* 85 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <polygon class=\"ql-stroke ql-fill\" points=\"3 11 5 9 3 7 3 11\"></polygon> <line class=\"ql-stroke ql-fill\" x1=15 x2=11 y1=4 y2=4></line> <path class=ql-fill d=M11,3a3,3,0,0,0,0,6h1V3H11Z></path> <rect class=ql-fill height=11 width=1 x=11 y=4></rect> <rect class=ql-fill height=11 width=1 x=13 y=4></rect> </svg>";

/***/ }),
/* 86 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <polygon class=\"ql-stroke ql-fill\" points=\"15 12 13 10 15 8 15 12\"></polygon> <line class=\"ql-stroke ql-fill\" x1=9 x2=5 y1=4 y2=4></line> <path class=ql-fill d=M5,3A3,3,0,0,0,5,9H6V3H5Z></path> <rect class=ql-fill height=11 width=1 x=5 y=4></rect> <rect class=ql-fill height=11 width=1 x=7 y=4></rect> </svg>";

/***/ }),
/* 87 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-fill d=M14,16H4a1,1,0,0,1,0-2H14A1,1,0,0,1,14,16Z /> <path class=ql-fill d=M14,4H4A1,1,0,0,1,4,2H14A1,1,0,0,1,14,4Z /> <rect class=ql-fill x=3 y=6 width=12 height=6 rx=1 ry=1 /> </svg>";

/***/ }),
/* 88 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-fill d=M13,16H5a1,1,0,0,1,0-2h8A1,1,0,0,1,13,16Z /> <path class=ql-fill d=M13,4H5A1,1,0,0,1,5,2h8A1,1,0,0,1,13,4Z /> <rect class=ql-fill x=2 y=6 width=14 height=6 rx=1 ry=1 /> </svg>";

/***/ }),
/* 89 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-fill d=M15,8H13a1,1,0,0,1,0-2h2A1,1,0,0,1,15,8Z /> <path class=ql-fill d=M15,12H13a1,1,0,0,1,0-2h2A1,1,0,0,1,15,12Z /> <path class=ql-fill d=M15,16H5a1,1,0,0,1,0-2H15A1,1,0,0,1,15,16Z /> <path class=ql-fill d=M15,4H5A1,1,0,0,1,5,2H15A1,1,0,0,1,15,4Z /> <rect class=ql-fill x=2 y=6 width=8 height=6 rx=1 ry=1 /> </svg>";

/***/ }),
/* 90 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-fill d=M5,8H3A1,1,0,0,1,3,6H5A1,1,0,0,1,5,8Z /> <path class=ql-fill d=M5,12H3a1,1,0,0,1,0-2H5A1,1,0,0,1,5,12Z /> <path class=ql-fill d=M13,16H3a1,1,0,0,1,0-2H13A1,1,0,0,1,13,16Z /> <path class=ql-fill d=M13,4H3A1,1,0,0,1,3,2H13A1,1,0,0,1,13,4Z /> <rect class=ql-fill x=8 y=6 width=8 height=6 rx=1 ry=1 transform=\"translate(24 18) rotate(-180)\"/> </svg>";

/***/ }),
/* 91 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-fill d=M11.759,2.482a2.561,2.561,0,0,0-3.53.607A7.656,7.656,0,0,0,6.8,6.2C6.109,9.188,5.275,14.677,4.15,14.927a1.545,1.545,0,0,0-1.3-.933A0.922,0.922,0,0,0,2,15.036S1.954,16,4.119,16s3.091-2.691,3.7-5.553c0.177-.826.36-1.726,0.554-2.6L8.775,6.2c0.381-1.421.807-2.521,1.306-2.676a1.014,1.014,0,0,0,1.02.56A0.966,0.966,0,0,0,11.759,2.482Z></path> <rect class=ql-fill height=1.6 rx=0.8 ry=0.8 width=5 x=5.15 y=6.2></rect> <path class=ql-fill d=M13.663,12.027a1.662,1.662,0,0,1,.266-0.276q0.193,0.069.456,0.138a2.1,2.1,0,0,0,.535.069,1.075,1.075,0,0,0,.767-0.3,1.044,1.044,0,0,0,.314-0.8,0.84,0.84,0,0,0-.238-0.619,0.8,0.8,0,0,0-.594-0.239,1.154,1.154,0,0,0-.781.3,4.607,4.607,0,0,0-.781,1q-0.091.15-.218,0.346l-0.246.38c-0.068-.288-0.137-0.582-0.212-0.885-0.459-1.847-2.494-.984-2.941-0.8-0.482.2-.353,0.647-0.094,0.529a0.869,0.869,0,0,1,1.281.585c0.217,0.751.377,1.436,0.527,2.038a5.688,5.688,0,0,1-.362.467,2.69,2.69,0,0,1-.264.271q-0.221-.08-0.471-0.147a2.029,2.029,0,0,0-.522-0.066,1.079,1.079,0,0,0-.768.3A1.058,1.058,0,0,0,9,15.131a0.82,0.82,0,0,0,.832.852,1.134,1.134,0,0,0,.787-0.3,5.11,5.11,0,0,0,.776-0.993q0.141-.219.215-0.34c0.046-.076.122-0.194,0.223-0.346a2.786,2.786,0,0,0,.918,1.726,2.582,2.582,0,0,0,2.376-.185c0.317-.181.212-0.565,0-0.494A0.807,0.807,0,0,1,14.176,15a5.159,5.159,0,0,1-.913-2.446l0,0Q13.487,12.24,13.663,12.027Z></path> </svg>";

/***/ }),
/* 92 */
/***/ (function(module, exports) {

module.exports = "<svg viewBox=\"0 0 18 18\"> <path class=ql-fill d=M10,4V14a1,1,0,0,1-2,0V10H3v4a1,1,0,0,1-2,0V4A1,1,0,0,1,3,4V8H8V4a1,1,0,0,1,2,0Zm6.06787,9.209H14.98975V7.59863a.54085.54085,0,0,0-.605-.60547h-.62744a1.01119,1.01119,0,0,0-.748.29688L11.645,8.56641a.5435.5435,0,0,0-.022.8584l.28613.30762a.53861.53861,0,0,0,.84717.0332l.09912-.08789a1.2137,1.2137,0,0,0,.2417-.35254h.02246s-.01123.30859-.01123.60547V13.209H12.041a.54085.54085,0,0,0-.605.60547v.43945a.54085.54085,0,0,0,.605.60547h4.02686a.54085.54085,0,0,0,.605-.60547v-.43945A.54085.54085,0,0,0,16.06787,13.209Z /> </svg>";

/***/ }),
/* 93 */
/***/ (function(module, exports) {

module.exports = "<svg viewBox=\"0 0 18 18\"> <path class=ql-fill d=M16.73975,13.81445v.43945a.54085.54085,0,0,1-.605.60547H11.855a.58392.58392,0,0,1-.64893-.60547V14.0127c0-2.90527,3.39941-3.42187,3.39941-4.55469a.77675.77675,0,0,0-.84717-.78125,1.17684,1.17684,0,0,0-.83594.38477c-.2749.26367-.561.374-.85791.13184l-.4292-.34082c-.30811-.24219-.38525-.51758-.1543-.81445a2.97155,2.97155,0,0,1,2.45361-1.17676,2.45393,2.45393,0,0,1,2.68408,2.40918c0,2.45312-3.1792,2.92676-3.27832,3.93848h2.79443A.54085.54085,0,0,1,16.73975,13.81445ZM9,3A.99974.99974,0,0,0,8,4V8H3V4A1,1,0,0,0,1,4V14a1,1,0,0,0,2,0V10H8v4a1,1,0,0,0,2,0V4A.99974.99974,0,0,0,9,3Z /> </svg>";

/***/ }),
/* 94 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=7 x2=13 y1=4 y2=4></line> <line class=ql-stroke x1=5 x2=11 y1=14 y2=14></line> <line class=ql-stroke x1=8 x2=10 y1=14 y2=4></line> </svg>";

/***/ }),
/* 95 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <rect class=ql-stroke height=10 width=12 x=3 y=4></rect> <circle class=ql-fill cx=6 cy=7 r=1></circle> <polyline class=\"ql-even ql-fill\" points=\"5 12 5 11 7 9 8 10 11 7 13 9 13 12 5 12\"></polyline> </svg>";

/***/ }),
/* 96 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=3 x2=15 y1=14 y2=14></line> <line class=ql-stroke x1=3 x2=15 y1=4 y2=4></line> <line class=ql-stroke x1=9 x2=15 y1=9 y2=9></line> <polyline class=\"ql-fill ql-stroke\" points=\"3 7 3 11 5 9 3 7\"></polyline> </svg>";

/***/ }),
/* 97 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=3 x2=15 y1=14 y2=14></line> <line class=ql-stroke x1=3 x2=15 y1=4 y2=4></line> <line class=ql-stroke x1=9 x2=15 y1=9 y2=9></line> <polyline class=ql-stroke points=\"5 7 5 11 3 9 5 7\"></polyline> </svg>";

/***/ }),
/* 98 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=7 x2=11 y1=7 y2=11></line> <path class=\"ql-even ql-stroke\" d=M8.9,4.577a3.476,3.476,0,0,1,.36,4.679A3.476,3.476,0,0,1,4.577,8.9C3.185,7.5,2.035,6.4,4.217,4.217S7.5,3.185,8.9,4.577Z></path> <path class=\"ql-even ql-stroke\" d=M13.423,9.1a3.476,3.476,0,0,0-4.679-.36,3.476,3.476,0,0,0,.36,4.679c1.392,1.392,2.5,2.542,4.679.36S14.815,10.5,13.423,9.1Z></path> </svg>";

/***/ }),
/* 99 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=7 x2=15 y1=4 y2=4></line> <line class=ql-stroke x1=7 x2=15 y1=9 y2=9></line> <line class=ql-stroke x1=7 x2=15 y1=14 y2=14></line> <line class=\"ql-stroke ql-thin\" x1=2.5 x2=4.5 y1=5.5 y2=5.5></line> <path class=ql-fill d=M3.5,6A0.5,0.5,0,0,1,3,5.5V3.085l-0.276.138A0.5,0.5,0,0,1,2.053,3c-0.124-.247-0.023-0.324.224-0.447l1-.5A0.5,0.5,0,0,1,4,2.5v3A0.5,0.5,0,0,1,3.5,6Z></path> <path class=\"ql-stroke ql-thin\" d=M4.5,10.5h-2c0-.234,1.85-1.076,1.85-2.234A0.959,0.959,0,0,0,2.5,8.156></path> <path class=\"ql-stroke ql-thin\" d=M2.5,14.846a0.959,0.959,0,0,0,1.85-.109A0.7,0.7,0,0,0,3.75,14a0.688,0.688,0,0,0,.6-0.736,0.959,0.959,0,0,0-1.85-.109></path> </svg>";

/***/ }),
/* 100 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=6 x2=15 y1=4 y2=4></line> <line class=ql-stroke x1=6 x2=15 y1=9 y2=9></line> <line class=ql-stroke x1=6 x2=15 y1=14 y2=14></line> <line class=ql-stroke x1=3 x2=3 y1=4 y2=4></line> <line class=ql-stroke x1=3 x2=3 y1=9 y2=9></line> <line class=ql-stroke x1=3 x2=3 y1=14 y2=14></line> </svg>";

/***/ }),
/* 101 */
/***/ (function(module, exports) {

module.exports = "<svg class=\"\" viewbox=\"0 0 18 18\"> <line class=ql-stroke x1=9 x2=15 y1=4 y2=4></line> <polyline class=ql-stroke points=\"3 4 4 5 6 3\"></polyline> <line class=ql-stroke x1=9 x2=15 y1=14 y2=14></line> <polyline class=ql-stroke points=\"3 14 4 15 6 13\"></polyline> <line class=ql-stroke x1=9 x2=15 y1=9 y2=9></line> <polyline class=ql-stroke points=\"3 9 4 10 6 8\"></polyline> </svg>";

/***/ }),
/* 102 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-fill d=M15.5,15H13.861a3.858,3.858,0,0,0,1.914-2.975,1.8,1.8,0,0,0-1.6-1.751A1.921,1.921,0,0,0,12.021,11.7a0.50013,0.50013,0,1,0,.957.291h0a0.914,0.914,0,0,1,1.053-.725,0.81,0.81,0,0,1,.744.762c0,1.076-1.16971,1.86982-1.93971,2.43082A1.45639,1.45639,0,0,0,12,15.5a0.5,0.5,0,0,0,.5.5h3A0.5,0.5,0,0,0,15.5,15Z /> <path class=ql-fill d=M9.65,5.241a1,1,0,0,0-1.409.108L6,7.964,3.759,5.349A1,1,0,0,0,2.192,6.59178Q2.21541,6.6213,2.241,6.649L4.684,9.5,2.241,12.35A1,1,0,0,0,3.71,13.70722q0.02557-.02768.049-0.05722L6,11.036,8.241,13.65a1,1,0,1,0,1.567-1.24277Q9.78459,12.3777,9.759,12.35L7.316,9.5,9.759,6.651A1,1,0,0,0,9.65,5.241Z /> </svg>";

/***/ }),
/* 103 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-fill d=M15.5,7H13.861a4.015,4.015,0,0,0,1.914-2.975,1.8,1.8,0,0,0-1.6-1.751A1.922,1.922,0,0,0,12.021,3.7a0.5,0.5,0,1,0,.957.291,0.917,0.917,0,0,1,1.053-.725,0.81,0.81,0,0,1,.744.762c0,1.077-1.164,1.925-1.934,2.486A1.423,1.423,0,0,0,12,7.5a0.5,0.5,0,0,0,.5.5h3A0.5,0.5,0,0,0,15.5,7Z /> <path class=ql-fill d=M9.651,5.241a1,1,0,0,0-1.41.108L6,7.964,3.759,5.349a1,1,0,1,0-1.519,1.3L4.683,9.5,2.241,12.35a1,1,0,1,0,1.519,1.3L6,11.036,8.241,13.65a1,1,0,0,0,1.519-1.3L7.317,9.5,9.759,6.651A1,1,0,0,0,9.651,5.241Z /> </svg>";

/***/ }),
/* 104 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <line class=\"ql-stroke ql-thin\" x1=15.5 x2=2.5 y1=8.5 y2=9.5></line> <path class=ql-fill d=M9.007,8C6.542,7.791,6,7.519,6,6.5,6,5.792,7.283,5,9,5c1.571,0,2.765.679,2.969,1.309a1,1,0,0,0,1.9-.617C13.356,4.106,11.354,3,9,3,6.2,3,4,4.538,4,6.5a3.2,3.2,0,0,0,.5,1.843Z></path> <path class=ql-fill d=M8.984,10C11.457,10.208,12,10.479,12,11.5c0,0.708-1.283,1.5-3,1.5-1.571,0-2.765-.679-2.969-1.309a1,1,0,1,0-1.9.617C4.644,13.894,6.646,15,9,15c2.8,0,5-1.538,5-3.5a3.2,3.2,0,0,0-.5-1.843Z></path> </svg>";

/***/ }),
/* 105 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <path class=ql-stroke d=M5,3V9a4.012,4.012,0,0,0,4,4H9a4.012,4.012,0,0,0,4-4V3></path> <rect class=ql-fill height=1 rx=0.5 ry=0.5 width=12 x=3 y=15></rect> </svg>";

/***/ }),
/* 106 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <rect class=ql-stroke height=12 width=12 x=3 y=3></rect> <rect class=ql-fill height=12 width=1 x=5 y=3></rect> <rect class=ql-fill height=12 width=1 x=12 y=3></rect> <rect class=ql-fill height=2 width=8 x=5 y=8></rect> <rect class=ql-fill height=1 width=3 x=3 y=5></rect> <rect class=ql-fill height=1 width=3 x=3 y=7></rect> <rect class=ql-fill height=1 width=3 x=3 y=10></rect> <rect class=ql-fill height=1 width=3 x=3 y=12></rect> <rect class=ql-fill height=1 width=3 x=12 y=5></rect> <rect class=ql-fill height=1 width=3 x=12 y=7></rect> <rect class=ql-fill height=1 width=3 x=12 y=10></rect> <rect class=ql-fill height=1 width=3 x=12 y=12></rect> </svg>";

/***/ }),
/* 107 */
/***/ (function(module, exports) {

module.exports = "<svg viewbox=\"0 0 18 18\"> <polygon class=ql-stroke points=\"7 11 9 13 11 11 7 11\"></polygon> <polygon class=ql-stroke points=\"7 7 9 5 11 7 7 7\"></polygon> </svg>";

/***/ }),
/* 108 */
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.BubbleTooltip = undefined;

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _extend = __webpack_require__(3);

var _extend2 = _interopRequireDefault(_extend);

var _emitter = __webpack_require__(8);

var _emitter2 = _interopRequireDefault(_emitter);

var _base = __webpack_require__(43);

var _base2 = _interopRequireDefault(_base);

var _selection = __webpack_require__(15);

var _icons = __webpack_require__(41);

var _icons2 = _interopRequireDefault(_icons);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var TOOLBAR_CONFIG = [['bold', 'italic', 'link'], [{ header: 1 }, { header: 2 }, 'blockquote']];

var BubbleTheme = function (_BaseTheme) {
  _inherits(BubbleTheme, _BaseTheme);

  function BubbleTheme(quill, options) {
    _classCallCheck(this, BubbleTheme);

    if (options.modules.toolbar != null && options.modules.toolbar.container == null) {
      options.modules.toolbar.container = TOOLBAR_CONFIG;
    }

    var _this = _possibleConstructorReturn(this, (BubbleTheme.__proto__ || Object.getPrototypeOf(BubbleTheme)).call(this, quill, options));

    _this.quill.container.classList.add('ql-bubble');
    return _this;
  }

  _createClass(BubbleTheme, [{
    key: 'extendToolbar',
    value: function extendToolbar(toolbar) {
      this.tooltip = new BubbleTooltip(this.quill, this.options.bounds);
      this.tooltip.root.appendChild(toolbar.container);
      this.buildButtons([].slice.call(toolbar.container.querySelectorAll('button')), _icons2.default);
      this.buildPickers([].slice.call(toolbar.container.querySelectorAll('select')), _icons2.default);
    }
  }]);

  return BubbleTheme;
}(_base2.default);

BubbleTheme.DEFAULTS = (0, _extend2.default)(true, {}, _base2.default.DEFAULTS, {
  modules: {
    toolbar: {
      handlers: {
        link: function link(value) {
          if (!value) {
            this.quill.format('link', false);
          } else {
            this.quill.theme.tooltip.edit();
          }
        }
      }
    }
  }
});

var BubbleTooltip = function (_BaseTooltip) {
  _inherits(BubbleTooltip, _BaseTooltip);

  function BubbleTooltip(quill, bounds) {
    _classCallCheck(this, BubbleTooltip);

    var _this2 = _possibleConstructorReturn(this, (BubbleTooltip.__proto__ || Object.getPrototypeOf(BubbleTooltip)).call(this, quill, bounds));

    _this2.quill.on(_emitter2.default.events.EDITOR_CHANGE, function (type, range, oldRange, source) {
      if (type !== _emitter2.default.events.SELECTION_CHANGE) return;
      if (range != null && range.length > 0 && source === _emitter2.default.sources.USER) {
        _this2.show();
        // Lock our width so we will expand beyond our offsetParent boundaries
        _this2.root.style.left = '0px';
        _this2.root.style.width = '';
        _this2.root.style.width = _this2.root.offsetWidth + 'px';
        var lines = _this2.quill.getLines(range.index, range.length);
        if (lines.length === 1) {
          _this2.position(_this2.quill.getBounds(range));
        } else {
          var lastLine = lines[lines.length - 1];
          var index = _this2.quill.getIndex(lastLine);
          var length = Math.min(lastLine.length() - 1, range.index + range.length - index);
          var _bounds = _this2.quill.getBounds(new _selection.Range(index, length));
          _this2.position(_bounds);
        }
      } else if (document.activeElement !== _this2.textbox && _this2.quill.hasFocus()) {
        _this2.hide();
      }
    });
    return _this2;
  }

  _createClass(BubbleTooltip, [{
    key: 'listen',
    value: function listen() {
      var _this3 = this;

      _get(BubbleTooltip.prototype.__proto__ || Object.getPrototypeOf(BubbleTooltip.prototype), 'listen', this).call(this);
      this.root.querySelector('.ql-close').addEventListener('click', function () {
        _this3.root.classList.remove('ql-editing');
      });
      this.quill.on(_emitter2.default.events.SCROLL_OPTIMIZE, function () {
        // Let selection be restored by toolbar handlers before repositioning
        setTimeout(function () {
          if (_this3.root.classList.contains('ql-hidden')) return;
          var range = _this3.quill.getSelection();
          if (range != null) {
            _this3.position(_this3.quill.getBounds(range));
          }
        }, 1);
      });
    }
  }, {
    key: 'cancel',
    value: function cancel() {
      this.show();
    }
  }, {
    key: 'position',
    value: function position(reference) {
      var shift = _get(BubbleTooltip.prototype.__proto__ || Object.getPrototypeOf(BubbleTooltip.prototype), 'position', this).call(this, reference);
      var arrow = this.root.querySelector('.ql-tooltip-arrow');
      arrow.style.marginLeft = '';
      if (shift === 0) return shift;
      arrow.style.marginLeft = -1 * shift - arrow.offsetWidth / 2 + 'px';
    }
  }]);

  return BubbleTooltip;
}(_base.BaseTooltip);

BubbleTooltip.TEMPLATE = ['<span class="ql-tooltip-arrow"></span>', '<div class="ql-tooltip-editor">', '<input type="text" data-formula="e=mc^2" data-link="https://quilljs.com" data-video="Embed URL">', '<a class="ql-close"></a>', '</div>'].join('');

exports.BubbleTooltip = BubbleTooltip;
exports.default = BubbleTheme;

/***/ }),
/* 109 */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__(63);


/***/ })
/******/ ])["default"];
});
;/*!
 * Chart.js v2.9.4
 * https://www.chartjs.org
 * (c) 2020 Chart.js Contributors
 * Released under the MIT License
 */
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(function() { try { return require('moment'); } catch(e) { } }()) :
typeof define === 'function' && define.amd ? define(['require'], function(require) { return factory(function() { try { return require('moment'); } catch(e) { } }()); }) :
(global = global || self, global.Chart = factory(global.moment));
}(this, (function (moment) { 'use strict';

moment = moment && moment.hasOwnProperty('default') ? moment['default'] : moment;

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

function getCjsExportFromNamespace (n) {
	return n && n['default'] || n;
}

var colorName = {
	"aliceblue": [240, 248, 255],
	"antiquewhite": [250, 235, 215],
	"aqua": [0, 255, 255],
	"aquamarine": [127, 255, 212],
	"azure": [240, 255, 255],
	"beige": [245, 245, 220],
	"bisque": [255, 228, 196],
	"black": [0, 0, 0],
	"blanchedalmond": [255, 235, 205],
	"blue": [0, 0, 255],
	"blueviolet": [138, 43, 226],
	"brown": [165, 42, 42],
	"burlywood": [222, 184, 135],
	"cadetblue": [95, 158, 160],
	"chartreuse": [127, 255, 0],
	"chocolate": [210, 105, 30],
	"coral": [255, 127, 80],
	"cornflowerblue": [100, 149, 237],
	"cornsilk": [255, 248, 220],
	"crimson": [220, 20, 60],
	"cyan": [0, 255, 255],
	"darkblue": [0, 0, 139],
	"darkcyan": [0, 139, 139],
	"darkgoldenrod": [184, 134, 11],
	"darkgray": [169, 169, 169],
	"darkgreen": [0, 100, 0],
	"darkgrey": [169, 169, 169],
	"darkkhaki": [189, 183, 107],
	"darkmagenta": [139, 0, 139],
	"darkolivegreen": [85, 107, 47],
	"darkorange": [255, 140, 0],
	"darkorchid": [153, 50, 204],
	"darkred": [139, 0, 0],
	"darksalmon": [233, 150, 122],
	"darkseagreen": [143, 188, 143],
	"darkslateblue": [72, 61, 139],
	"darkslategray": [47, 79, 79],
	"darkslategrey": [47, 79, 79],
	"darkturquoise": [0, 206, 209],
	"darkviolet": [148, 0, 211],
	"deeppink": [255, 20, 147],
	"deepskyblue": [0, 191, 255],
	"dimgray": [105, 105, 105],
	"dimgrey": [105, 105, 105],
	"dodgerblue": [30, 144, 255],
	"firebrick": [178, 34, 34],
	"floralwhite": [255, 250, 240],
	"forestgreen": [34, 139, 34],
	"fuchsia": [255, 0, 255],
	"gainsboro": [220, 220, 220],
	"ghostwhite": [248, 248, 255],
	"gold": [255, 215, 0],
	"goldenrod": [218, 165, 32],
	"gray": [128, 128, 128],
	"green": [0, 128, 0],
	"greenyellow": [173, 255, 47],
	"grey": [128, 128, 128],
	"honeydew": [240, 255, 240],
	"hotpink": [255, 105, 180],
	"indianred": [205, 92, 92],
	"indigo": [75, 0, 130],
	"ivory": [255, 255, 240],
	"khaki": [240, 230, 140],
	"lavender": [230, 230, 250],
	"lavenderblush": [255, 240, 245],
	"lawngreen": [124, 252, 0],
	"lemonchiffon": [255, 250, 205],
	"lightblue": [173, 216, 230],
	"lightcoral": [240, 128, 128],
	"lightcyan": [224, 255, 255],
	"lightgoldenrodyellow": [250, 250, 210],
	"lightgray": [211, 211, 211],
	"lightgreen": [144, 238, 144],
	"lightgrey": [211, 211, 211],
	"lightpink": [255, 182, 193],
	"lightsalmon": [255, 160, 122],
	"lightseagreen": [32, 178, 170],
	"lightskyblue": [135, 206, 250],
	"lightslategray": [119, 136, 153],
	"lightslategrey": [119, 136, 153],
	"lightsteelblue": [176, 196, 222],
	"lightyellow": [255, 255, 224],
	"lime": [0, 255, 0],
	"limegreen": [50, 205, 50],
	"linen": [250, 240, 230],
	"magenta": [255, 0, 255],
	"maroon": [128, 0, 0],
	"mediumaquamarine": [102, 205, 170],
	"mediumblue": [0, 0, 205],
	"mediumorchid": [186, 85, 211],
	"mediumpurple": [147, 112, 219],
	"mediumseagreen": [60, 179, 113],
	"mediumslateblue": [123, 104, 238],
	"mediumspringgreen": [0, 250, 154],
	"mediumturquoise": [72, 209, 204],
	"mediumvioletred": [199, 21, 133],
	"midnightblue": [25, 25, 112],
	"mintcream": [245, 255, 250],
	"mistyrose": [255, 228, 225],
	"moccasin": [255, 228, 181],
	"navajowhite": [255, 222, 173],
	"navy": [0, 0, 128],
	"oldlace": [253, 245, 230],
	"olive": [128, 128, 0],
	"olivedrab": [107, 142, 35],
	"orange": [255, 165, 0],
	"orangered": [255, 69, 0],
	"orchid": [218, 112, 214],
	"palegoldenrod": [238, 232, 170],
	"palegreen": [152, 251, 152],
	"paleturquoise": [175, 238, 238],
	"palevioletred": [219, 112, 147],
	"papayawhip": [255, 239, 213],
	"peachpuff": [255, 218, 185],
	"peru": [205, 133, 63],
	"pink": [255, 192, 203],
	"plum": [221, 160, 221],
	"powderblue": [176, 224, 230],
	"purple": [128, 0, 128],
	"rebeccapurple": [102, 51, 153],
	"red": [255, 0, 0],
	"rosybrown": [188, 143, 143],
	"royalblue": [65, 105, 225],
	"saddlebrown": [139, 69, 19],
	"salmon": [250, 128, 114],
	"sandybrown": [244, 164, 96],
	"seagreen": [46, 139, 87],
	"seashell": [255, 245, 238],
	"sienna": [160, 82, 45],
	"silver": [192, 192, 192],
	"skyblue": [135, 206, 235],
	"slateblue": [106, 90, 205],
	"slategray": [112, 128, 144],
	"slategrey": [112, 128, 144],
	"snow": [255, 250, 250],
	"springgreen": [0, 255, 127],
	"steelblue": [70, 130, 180],
	"tan": [210, 180, 140],
	"teal": [0, 128, 128],
	"thistle": [216, 191, 216],
	"tomato": [255, 99, 71],
	"turquoise": [64, 224, 208],
	"violet": [238, 130, 238],
	"wheat": [245, 222, 179],
	"white": [255, 255, 255],
	"whitesmoke": [245, 245, 245],
	"yellow": [255, 255, 0],
	"yellowgreen": [154, 205, 50]
};

var conversions = createCommonjsModule(function (module) {
/* MIT license */


// NOTE: conversions should only return primitive values (i.e. arrays, or
//       values that give correct `typeof` results).
//       do not use box values types (i.e. Number(), String(), etc.)

var reverseKeywords = {};
for (var key in colorName) {
	if (colorName.hasOwnProperty(key)) {
		reverseKeywords[colorName[key]] = key;
	}
}

var convert = module.exports = {
	rgb: {channels: 3, labels: 'rgb'},
	hsl: {channels: 3, labels: 'hsl'},
	hsv: {channels: 3, labels: 'hsv'},
	hwb: {channels: 3, labels: 'hwb'},
	cmyk: {channels: 4, labels: 'cmyk'},
	xyz: {channels: 3, labels: 'xyz'},
	lab: {channels: 3, labels: 'lab'},
	lch: {channels: 3, labels: 'lch'},
	hex: {channels: 1, labels: ['hex']},
	keyword: {channels: 1, labels: ['keyword']},
	ansi16: {channels: 1, labels: ['ansi16']},
	ansi256: {channels: 1, labels: ['ansi256']},
	hcg: {channels: 3, labels: ['h', 'c', 'g']},
	apple: {channels: 3, labels: ['r16', 'g16', 'b16']},
	gray: {channels: 1, labels: ['gray']}
};

// hide .channels and .labels properties
for (var model in convert) {
	if (convert.hasOwnProperty(model)) {
		if (!('channels' in convert[model])) {
			throw new Error('missing channels property: ' + model);
		}

		if (!('labels' in convert[model])) {
			throw new Error('missing channel labels property: ' + model);
		}

		if (convert[model].labels.length !== convert[model].channels) {
			throw new Error('channel and label counts mismatch: ' + model);
		}

		var channels = convert[model].channels;
		var labels = convert[model].labels;
		delete convert[model].channels;
		delete convert[model].labels;
		Object.defineProperty(convert[model], 'channels', {value: channels});
		Object.defineProperty(convert[model], 'labels', {value: labels});
	}
}

convert.rgb.hsl = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;
	var min = Math.min(r, g, b);
	var max = Math.max(r, g, b);
	var delta = max - min;
	var h;
	var s;
	var l;

	if (max === min) {
		h = 0;
	} else if (r === max) {
		h = (g - b) / delta;
	} else if (g === max) {
		h = 2 + (b - r) / delta;
	} else if (b === max) {
		h = 4 + (r - g) / delta;
	}

	h = Math.min(h * 60, 360);

	if (h < 0) {
		h += 360;
	}

	l = (min + max) / 2;

	if (max === min) {
		s = 0;
	} else if (l <= 0.5) {
		s = delta / (max + min);
	} else {
		s = delta / (2 - max - min);
	}

	return [h, s * 100, l * 100];
};

convert.rgb.hsv = function (rgb) {
	var rdif;
	var gdif;
	var bdif;
	var h;
	var s;

	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;
	var v = Math.max(r, g, b);
	var diff = v - Math.min(r, g, b);
	var diffc = function (c) {
		return (v - c) / 6 / diff + 1 / 2;
	};

	if (diff === 0) {
		h = s = 0;
	} else {
		s = diff / v;
		rdif = diffc(r);
		gdif = diffc(g);
		bdif = diffc(b);

		if (r === v) {
			h = bdif - gdif;
		} else if (g === v) {
			h = (1 / 3) + rdif - bdif;
		} else if (b === v) {
			h = (2 / 3) + gdif - rdif;
		}
		if (h < 0) {
			h += 1;
		} else if (h > 1) {
			h -= 1;
		}
	}

	return [
		h * 360,
		s * 100,
		v * 100
	];
};

convert.rgb.hwb = function (rgb) {
	var r = rgb[0];
	var g = rgb[1];
	var b = rgb[2];
	var h = convert.rgb.hsl(rgb)[0];
	var w = 1 / 255 * Math.min(r, Math.min(g, b));

	b = 1 - 1 / 255 * Math.max(r, Math.max(g, b));

	return [h, w * 100, b * 100];
};

convert.rgb.cmyk = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;
	var c;
	var m;
	var y;
	var k;

	k = Math.min(1 - r, 1 - g, 1 - b);
	c = (1 - r - k) / (1 - k) || 0;
	m = (1 - g - k) / (1 - k) || 0;
	y = (1 - b - k) / (1 - k) || 0;

	return [c * 100, m * 100, y * 100, k * 100];
};

/**
 * See https://en.m.wikipedia.org/wiki/Euclidean_distance#Squared_Euclidean_distance
 * */
function comparativeDistance(x, y) {
	return (
		Math.pow(x[0] - y[0], 2) +
		Math.pow(x[1] - y[1], 2) +
		Math.pow(x[2] - y[2], 2)
	);
}

convert.rgb.keyword = function (rgb) {
	var reversed = reverseKeywords[rgb];
	if (reversed) {
		return reversed;
	}

	var currentClosestDistance = Infinity;
	var currentClosestKeyword;

	for (var keyword in colorName) {
		if (colorName.hasOwnProperty(keyword)) {
			var value = colorName[keyword];

			// Compute comparative distance
			var distance = comparativeDistance(rgb, value);

			// Check if its less, if so set as closest
			if (distance < currentClosestDistance) {
				currentClosestDistance = distance;
				currentClosestKeyword = keyword;
			}
		}
	}

	return currentClosestKeyword;
};

convert.keyword.rgb = function (keyword) {
	return colorName[keyword];
};

convert.rgb.xyz = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;

	// assume sRGB
	r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
	g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
	b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);

	var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
	var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
	var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);

	return [x * 100, y * 100, z * 100];
};

convert.rgb.lab = function (rgb) {
	var xyz = convert.rgb.xyz(rgb);
	var x = xyz[0];
	var y = xyz[1];
	var z = xyz[2];
	var l;
	var a;
	var b;

	x /= 95.047;
	y /= 100;
	z /= 108.883;

	x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116);
	y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116);
	z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116);

	l = (116 * y) - 16;
	a = 500 * (x - y);
	b = 200 * (y - z);

	return [l, a, b];
};

convert.hsl.rgb = function (hsl) {
	var h = hsl[0] / 360;
	var s = hsl[1] / 100;
	var l = hsl[2] / 100;
	var t1;
	var t2;
	var t3;
	var rgb;
	var val;

	if (s === 0) {
		val = l * 255;
		return [val, val, val];
	}

	if (l < 0.5) {
		t2 = l * (1 + s);
	} else {
		t2 = l + s - l * s;
	}

	t1 = 2 * l - t2;

	rgb = [0, 0, 0];
	for (var i = 0; i < 3; i++) {
		t3 = h + 1 / 3 * -(i - 1);
		if (t3 < 0) {
			t3++;
		}
		if (t3 > 1) {
			t3--;
		}

		if (6 * t3 < 1) {
			val = t1 + (t2 - t1) * 6 * t3;
		} else if (2 * t3 < 1) {
			val = t2;
		} else if (3 * t3 < 2) {
			val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
		} else {
			val = t1;
		}

		rgb[i] = val * 255;
	}

	return rgb;
};

convert.hsl.hsv = function (hsl) {
	var h = hsl[0];
	var s = hsl[1] / 100;
	var l = hsl[2] / 100;
	var smin = s;
	var lmin = Math.max(l, 0.01);
	var sv;
	var v;

	l *= 2;
	s *= (l <= 1) ? l : 2 - l;
	smin *= lmin <= 1 ? lmin : 2 - lmin;
	v = (l + s) / 2;
	sv = l === 0 ? (2 * smin) / (lmin + smin) : (2 * s) / (l + s);

	return [h, sv * 100, v * 100];
};

convert.hsv.rgb = function (hsv) {
	var h = hsv[0] / 60;
	var s = hsv[1] / 100;
	var v = hsv[2] / 100;
	var hi = Math.floor(h) % 6;

	var f = h - Math.floor(h);
	var p = 255 * v * (1 - s);
	var q = 255 * v * (1 - (s * f));
	var t = 255 * v * (1 - (s * (1 - f)));
	v *= 255;

	switch (hi) {
		case 0:
			return [v, t, p];
		case 1:
			return [q, v, p];
		case 2:
			return [p, v, t];
		case 3:
			return [p, q, v];
		case 4:
			return [t, p, v];
		case 5:
			return [v, p, q];
	}
};

convert.hsv.hsl = function (hsv) {
	var h = hsv[0];
	var s = hsv[1] / 100;
	var v = hsv[2] / 100;
	var vmin = Math.max(v, 0.01);
	var lmin;
	var sl;
	var l;

	l = (2 - s) * v;
	lmin = (2 - s) * vmin;
	sl = s * vmin;
	sl /= (lmin <= 1) ? lmin : 2 - lmin;
	sl = sl || 0;
	l /= 2;

	return [h, sl * 100, l * 100];
};

// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
convert.hwb.rgb = function (hwb) {
	var h = hwb[0] / 360;
	var wh = hwb[1] / 100;
	var bl = hwb[2] / 100;
	var ratio = wh + bl;
	var i;
	var v;
	var f;
	var n;

	// wh + bl cant be > 1
	if (ratio > 1) {
		wh /= ratio;
		bl /= ratio;
	}

	i = Math.floor(6 * h);
	v = 1 - bl;
	f = 6 * h - i;

	if ((i & 0x01) !== 0) {
		f = 1 - f;
	}

	n = wh + f * (v - wh); // linear interpolation

	var r;
	var g;
	var b;
	switch (i) {
		default:
		case 6:
		case 0: r = v; g = n; b = wh; break;
		case 1: r = n; g = v; b = wh; break;
		case 2: r = wh; g = v; b = n; break;
		case 3: r = wh; g = n; b = v; break;
		case 4: r = n; g = wh; b = v; break;
		case 5: r = v; g = wh; b = n; break;
	}

	return [r * 255, g * 255, b * 255];
};

convert.cmyk.rgb = function (cmyk) {
	var c = cmyk[0] / 100;
	var m = cmyk[1] / 100;
	var y = cmyk[2] / 100;
	var k = cmyk[3] / 100;
	var r;
	var g;
	var b;

	r = 1 - Math.min(1, c * (1 - k) + k);
	g = 1 - Math.min(1, m * (1 - k) + k);
	b = 1 - Math.min(1, y * (1 - k) + k);

	return [r * 255, g * 255, b * 255];
};

convert.xyz.rgb = function (xyz) {
	var x = xyz[0] / 100;
	var y = xyz[1] / 100;
	var z = xyz[2] / 100;
	var r;
	var g;
	var b;

	r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
	g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
	b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);

	// assume sRGB
	r = r > 0.0031308
		? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
		: r * 12.92;

	g = g > 0.0031308
		? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
		: g * 12.92;

	b = b > 0.0031308
		? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
		: b * 12.92;

	r = Math.min(Math.max(0, r), 1);
	g = Math.min(Math.max(0, g), 1);
	b = Math.min(Math.max(0, b), 1);

	return [r * 255, g * 255, b * 255];
};

convert.xyz.lab = function (xyz) {
	var x = xyz[0];
	var y = xyz[1];
	var z = xyz[2];
	var l;
	var a;
	var b;

	x /= 95.047;
	y /= 100;
	z /= 108.883;

	x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116);
	y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116);
	z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116);

	l = (116 * y) - 16;
	a = 500 * (x - y);
	b = 200 * (y - z);

	return [l, a, b];
};

convert.lab.xyz = function (lab) {
	var l = lab[0];
	var a = lab[1];
	var b = lab[2];
	var x;
	var y;
	var z;

	y = (l + 16) / 116;
	x = a / 500 + y;
	z = y - b / 200;

	var y2 = Math.pow(y, 3);
	var x2 = Math.pow(x, 3);
	var z2 = Math.pow(z, 3);
	y = y2 > 0.008856 ? y2 : (y - 16 / 116) / 7.787;
	x = x2 > 0.008856 ? x2 : (x - 16 / 116) / 7.787;
	z = z2 > 0.008856 ? z2 : (z - 16 / 116) / 7.787;

	x *= 95.047;
	y *= 100;
	z *= 108.883;

	return [x, y, z];
};

convert.lab.lch = function (lab) {
	var l = lab[0];
	var a = lab[1];
	var b = lab[2];
	var hr;
	var h;
	var c;

	hr = Math.atan2(b, a);
	h = hr * 360 / 2 / Math.PI;

	if (h < 0) {
		h += 360;
	}

	c = Math.sqrt(a * a + b * b);

	return [l, c, h];
};

convert.lch.lab = function (lch) {
	var l = lch[0];
	var c = lch[1];
	var h = lch[2];
	var a;
	var b;
	var hr;

	hr = h / 360 * 2 * Math.PI;
	a = c * Math.cos(hr);
	b = c * Math.sin(hr);

	return [l, a, b];
};

convert.rgb.ansi16 = function (args) {
	var r = args[0];
	var g = args[1];
	var b = args[2];
	var value = 1 in arguments ? arguments[1] : convert.rgb.hsv(args)[2]; // hsv -> ansi16 optimization

	value = Math.round(value / 50);

	if (value === 0) {
		return 30;
	}

	var ansi = 30
		+ ((Math.round(b / 255) << 2)
		| (Math.round(g / 255) << 1)
		| Math.round(r / 255));

	if (value === 2) {
		ansi += 60;
	}

	return ansi;
};

convert.hsv.ansi16 = function (args) {
	// optimization here; we already know the value and don't need to get
	// it converted for us.
	return convert.rgb.ansi16(convert.hsv.rgb(args), args[2]);
};

convert.rgb.ansi256 = function (args) {
	var r = args[0];
	var g = args[1];
	var b = args[2];

	// we use the extended greyscale palette here, with the exception of
	// black and white. normal palette only has 4 greyscale shades.
	if (r === g && g === b) {
		if (r < 8) {
			return 16;
		}

		if (r > 248) {
			return 231;
		}

		return Math.round(((r - 8) / 247) * 24) + 232;
	}

	var ansi = 16
		+ (36 * Math.round(r / 255 * 5))
		+ (6 * Math.round(g / 255 * 5))
		+ Math.round(b / 255 * 5);

	return ansi;
};

convert.ansi16.rgb = function (args) {
	var color = args % 10;

	// handle greyscale
	if (color === 0 || color === 7) {
		if (args > 50) {
			color += 3.5;
		}

		color = color / 10.5 * 255;

		return [color, color, color];
	}

	var mult = (~~(args > 50) + 1) * 0.5;
	var r = ((color & 1) * mult) * 255;
	var g = (((color >> 1) & 1) * mult) * 255;
	var b = (((color >> 2) & 1) * mult) * 255;

	return [r, g, b];
};

convert.ansi256.rgb = function (args) {
	// handle greyscale
	if (args >= 232) {
		var c = (args - 232) * 10 + 8;
		return [c, c, c];
	}

	args -= 16;

	var rem;
	var r = Math.floor(args / 36) / 5 * 255;
	var g = Math.floor((rem = args % 36) / 6) / 5 * 255;
	var b = (rem % 6) / 5 * 255;

	return [r, g, b];
};

convert.rgb.hex = function (args) {
	var integer = ((Math.round(args[0]) & 0xFF) << 16)
		+ ((Math.round(args[1]) & 0xFF) << 8)
		+ (Math.round(args[2]) & 0xFF);

	var string = integer.toString(16).toUpperCase();
	return '000000'.substring(string.length) + string;
};

convert.hex.rgb = function (args) {
	var match = args.toString(16).match(/[a-f0-9]{6}|[a-f0-9]{3}/i);
	if (!match) {
		return [0, 0, 0];
	}

	var colorString = match[0];

	if (match[0].length === 3) {
		colorString = colorString.split('').map(function (char) {
			return char + char;
		}).join('');
	}

	var integer = parseInt(colorString, 16);
	var r = (integer >> 16) & 0xFF;
	var g = (integer >> 8) & 0xFF;
	var b = integer & 0xFF;

	return [r, g, b];
};

convert.rgb.hcg = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;
	var max = Math.max(Math.max(r, g), b);
	var min = Math.min(Math.min(r, g), b);
	var chroma = (max - min);
	var grayscale;
	var hue;

	if (chroma < 1) {
		grayscale = min / (1 - chroma);
	} else {
		grayscale = 0;
	}

	if (chroma <= 0) {
		hue = 0;
	} else
	if (max === r) {
		hue = ((g - b) / chroma) % 6;
	} else
	if (max === g) {
		hue = 2 + (b - r) / chroma;
	} else {
		hue = 4 + (r - g) / chroma + 4;
	}

	hue /= 6;
	hue %= 1;

	return [hue * 360, chroma * 100, grayscale * 100];
};

convert.hsl.hcg = function (hsl) {
	var s = hsl[1] / 100;
	var l = hsl[2] / 100;
	var c = 1;
	var f = 0;

	if (l < 0.5) {
		c = 2.0 * s * l;
	} else {
		c = 2.0 * s * (1.0 - l);
	}

	if (c < 1.0) {
		f = (l - 0.5 * c) / (1.0 - c);
	}

	return [hsl[0], c * 100, f * 100];
};

convert.hsv.hcg = function (hsv) {
	var s = hsv[1] / 100;
	var v = hsv[2] / 100;

	var c = s * v;
	var f = 0;

	if (c < 1.0) {
		f = (v - c) / (1 - c);
	}

	return [hsv[0], c * 100, f * 100];
};

convert.hcg.rgb = function (hcg) {
	var h = hcg[0] / 360;
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;

	if (c === 0.0) {
		return [g * 255, g * 255, g * 255];
	}

	var pure = [0, 0, 0];
	var hi = (h % 1) * 6;
	var v = hi % 1;
	var w = 1 - v;
	var mg = 0;

	switch (Math.floor(hi)) {
		case 0:
			pure[0] = 1; pure[1] = v; pure[2] = 0; break;
		case 1:
			pure[0] = w; pure[1] = 1; pure[2] = 0; break;
		case 2:
			pure[0] = 0; pure[1] = 1; pure[2] = v; break;
		case 3:
			pure[0] = 0; pure[1] = w; pure[2] = 1; break;
		case 4:
			pure[0] = v; pure[1] = 0; pure[2] = 1; break;
		default:
			pure[0] = 1; pure[1] = 0; pure[2] = w;
	}

	mg = (1.0 - c) * g;

	return [
		(c * pure[0] + mg) * 255,
		(c * pure[1] + mg) * 255,
		(c * pure[2] + mg) * 255
	];
};

convert.hcg.hsv = function (hcg) {
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;

	var v = c + g * (1.0 - c);
	var f = 0;

	if (v > 0.0) {
		f = c / v;
	}

	return [hcg[0], f * 100, v * 100];
};

convert.hcg.hsl = function (hcg) {
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;

	var l = g * (1.0 - c) + 0.5 * c;
	var s = 0;

	if (l > 0.0 && l < 0.5) {
		s = c / (2 * l);
	} else
	if (l >= 0.5 && l < 1.0) {
		s = c / (2 * (1 - l));
	}

	return [hcg[0], s * 100, l * 100];
};

convert.hcg.hwb = function (hcg) {
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;
	var v = c + g * (1.0 - c);
	return [hcg[0], (v - c) * 100, (1 - v) * 100];
};

convert.hwb.hcg = function (hwb) {
	var w = hwb[1] / 100;
	var b = hwb[2] / 100;
	var v = 1 - b;
	var c = v - w;
	var g = 0;

	if (c < 1) {
		g = (v - c) / (1 - c);
	}

	return [hwb[0], c * 100, g * 100];
};

convert.apple.rgb = function (apple) {
	return [(apple[0] / 65535) * 255, (apple[1] / 65535) * 255, (apple[2] / 65535) * 255];
};

convert.rgb.apple = function (rgb) {
	return [(rgb[0] / 255) * 65535, (rgb[1] / 255) * 65535, (rgb[2] / 255) * 65535];
};

convert.gray.rgb = function (args) {
	return [args[0] / 100 * 255, args[0] / 100 * 255, args[0] / 100 * 255];
};

convert.gray.hsl = convert.gray.hsv = function (args) {
	return [0, 0, args[0]];
};

convert.gray.hwb = function (gray) {
	return [0, 100, gray[0]];
};

convert.gray.cmyk = function (gray) {
	return [0, 0, 0, gray[0]];
};

convert.gray.lab = function (gray) {
	return [gray[0], 0, 0];
};

convert.gray.hex = function (gray) {
	var val = Math.round(gray[0] / 100 * 255) & 0xFF;
	var integer = (val << 16) + (val << 8) + val;

	var string = integer.toString(16).toUpperCase();
	return '000000'.substring(string.length) + string;
};

convert.rgb.gray = function (rgb) {
	var val = (rgb[0] + rgb[1] + rgb[2]) / 3;
	return [val / 255 * 100];
};
});
var conversions_1 = conversions.rgb;
var conversions_2 = conversions.hsl;
var conversions_3 = conversions.hsv;
var conversions_4 = conversions.hwb;
var conversions_5 = conversions.cmyk;
var conversions_6 = conversions.xyz;
var conversions_7 = conversions.lab;
var conversions_8 = conversions.lch;
var conversions_9 = conversions.hex;
var conversions_10 = conversions.keyword;
var conversions_11 = conversions.ansi16;
var conversions_12 = conversions.ansi256;
var conversions_13 = conversions.hcg;
var conversions_14 = conversions.apple;
var conversions_15 = conversions.gray;

/*
	this function routes a model to all other models.

	all functions that are routed have a property `.conversion` attached
	to the returned synthetic function. This property is an array
	of strings, each with the steps in between the 'from' and 'to'
	color models (inclusive).

	conversions that are not possible simply are not included.
*/

function buildGraph() {
	var graph = {};
	// https://jsperf.com/object-keys-vs-for-in-with-closure/3
	var models = Object.keys(conversions);

	for (var len = models.length, i = 0; i < len; i++) {
		graph[models[i]] = {
			// http://jsperf.com/1-vs-infinity
			// micro-opt, but this is simple.
			distance: -1,
			parent: null
		};
	}

	return graph;
}

// https://en.wikipedia.org/wiki/Breadth-first_search
function deriveBFS(fromModel) {
	var graph = buildGraph();
	var queue = [fromModel]; // unshift -> queue -> pop

	graph[fromModel].distance = 0;

	while (queue.length) {
		var current = queue.pop();
		var adjacents = Object.keys(conversions[current]);

		for (var len = adjacents.length, i = 0; i < len; i++) {
			var adjacent = adjacents[i];
			var node = graph[adjacent];

			if (node.distance === -1) {
				node.distance = graph[current].distance + 1;
				node.parent = current;
				queue.unshift(adjacent);
			}
		}
	}

	return graph;
}

function link(from, to) {
	return function (args) {
		return to(from(args));
	};
}

function wrapConversion(toModel, graph) {
	var path = [graph[toModel].parent, toModel];
	var fn = conversions[graph[toModel].parent][toModel];

	var cur = graph[toModel].parent;
	while (graph[cur].parent) {
		path.unshift(graph[cur].parent);
		fn = link(conversions[graph[cur].parent][cur], fn);
		cur = graph[cur].parent;
	}

	fn.conversion = path;
	return fn;
}

var route = function (fromModel) {
	var graph = deriveBFS(fromModel);
	var conversion = {};

	var models = Object.keys(graph);
	for (var len = models.length, i = 0; i < len; i++) {
		var toModel = models[i];
		var node = graph[toModel];

		if (node.parent === null) {
			// no possible conversion, or this node is the source model.
			continue;
		}

		conversion[toModel] = wrapConversion(toModel, graph);
	}

	return conversion;
};

var convert = {};

var models = Object.keys(conversions);

function wrapRaw(fn) {
	var wrappedFn = function (args) {
		if (args === undefined || args === null) {
			return args;
		}

		if (arguments.length > 1) {
			args = Array.prototype.slice.call(arguments);
		}

		return fn(args);
	};

	// preserve .conversion property if there is one
	if ('conversion' in fn) {
		wrappedFn.conversion = fn.conversion;
	}

	return wrappedFn;
}

function wrapRounded(fn) {
	var wrappedFn = function (args) {
		if (args === undefined || args === null) {
			return args;
		}

		if (arguments.length > 1) {
			args = Array.prototype.slice.call(arguments);
		}

		var result = fn(args);

		// we're assuming the result is an array here.
		// see notice in conversions.js; don't use box types
		// in conversion functions.
		if (typeof result === 'object') {
			for (var len = result.length, i = 0; i < len; i++) {
				result[i] = Math.round(result[i]);
			}
		}

		return result;
	};

	// preserve .conversion property if there is one
	if ('conversion' in fn) {
		wrappedFn.conversion = fn.conversion;
	}

	return wrappedFn;
}

models.forEach(function (fromModel) {
	convert[fromModel] = {};

	Object.defineProperty(convert[fromModel], 'channels', {value: conversions[fromModel].channels});
	Object.defineProperty(convert[fromModel], 'labels', {value: conversions[fromModel].labels});

	var routes = route(fromModel);
	var routeModels = Object.keys(routes);

	routeModels.forEach(function (toModel) {
		var fn = routes[toModel];

		convert[fromModel][toModel] = wrapRounded(fn);
		convert[fromModel][toModel].raw = wrapRaw(fn);
	});
});

var colorConvert = convert;

var colorName$1 = {
	"aliceblue": [240, 248, 255],
	"antiquewhite": [250, 235, 215],
	"aqua": [0, 255, 255],
	"aquamarine": [127, 255, 212],
	"azure": [240, 255, 255],
	"beige": [245, 245, 220],
	"bisque": [255, 228, 196],
	"black": [0, 0, 0],
	"blanchedalmond": [255, 235, 205],
	"blue": [0, 0, 255],
	"blueviolet": [138, 43, 226],
	"brown": [165, 42, 42],
	"burlywood": [222, 184, 135],
	"cadetblue": [95, 158, 160],
	"chartreuse": [127, 255, 0],
	"chocolate": [210, 105, 30],
	"coral": [255, 127, 80],
	"cornflowerblue": [100, 149, 237],
	"cornsilk": [255, 248, 220],
	"crimson": [220, 20, 60],
	"cyan": [0, 255, 255],
	"darkblue": [0, 0, 139],
	"darkcyan": [0, 139, 139],
	"darkgoldenrod": [184, 134, 11],
	"darkgray": [169, 169, 169],
	"darkgreen": [0, 100, 0],
	"darkgrey": [169, 169, 169],
	"darkkhaki": [189, 183, 107],
	"darkmagenta": [139, 0, 139],
	"darkolivegreen": [85, 107, 47],
	"darkorange": [255, 140, 0],
	"darkorchid": [153, 50, 204],
	"darkred": [139, 0, 0],
	"darksalmon": [233, 150, 122],
	"darkseagreen": [143, 188, 143],
	"darkslateblue": [72, 61, 139],
	"darkslategray": [47, 79, 79],
	"darkslategrey": [47, 79, 79],
	"darkturquoise": [0, 206, 209],
	"darkviolet": [148, 0, 211],
	"deeppink": [255, 20, 147],
	"deepskyblue": [0, 191, 255],
	"dimgray": [105, 105, 105],
	"dimgrey": [105, 105, 105],
	"dodgerblue": [30, 144, 255],
	"firebrick": [178, 34, 34],
	"floralwhite": [255, 250, 240],
	"forestgreen": [34, 139, 34],
	"fuchsia": [255, 0, 255],
	"gainsboro": [220, 220, 220],
	"ghostwhite": [248, 248, 255],
	"gold": [255, 215, 0],
	"goldenrod": [218, 165, 32],
	"gray": [128, 128, 128],
	"green": [0, 128, 0],
	"greenyellow": [173, 255, 47],
	"grey": [128, 128, 128],
	"honeydew": [240, 255, 240],
	"hotpink": [255, 105, 180],
	"indianred": [205, 92, 92],
	"indigo": [75, 0, 130],
	"ivory": [255, 255, 240],
	"khaki": [240, 230, 140],
	"lavender": [230, 230, 250],
	"lavenderblush": [255, 240, 245],
	"lawngreen": [124, 252, 0],
	"lemonchiffon": [255, 250, 205],
	"lightblue": [173, 216, 230],
	"lightcoral": [240, 128, 128],
	"lightcyan": [224, 255, 255],
	"lightgoldenrodyellow": [250, 250, 210],
	"lightgray": [211, 211, 211],
	"lightgreen": [144, 238, 144],
	"lightgrey": [211, 211, 211],
	"lightpink": [255, 182, 193],
	"lightsalmon": [255, 160, 122],
	"lightseagreen": [32, 178, 170],
	"lightskyblue": [135, 206, 250],
	"lightslategray": [119, 136, 153],
	"lightslategrey": [119, 136, 153],
	"lightsteelblue": [176, 196, 222],
	"lightyellow": [255, 255, 224],
	"lime": [0, 255, 0],
	"limegreen": [50, 205, 50],
	"linen": [250, 240, 230],
	"magenta": [255, 0, 255],
	"maroon": [128, 0, 0],
	"mediumaquamarine": [102, 205, 170],
	"mediumblue": [0, 0, 205],
	"mediumorchid": [186, 85, 211],
	"mediumpurple": [147, 112, 219],
	"mediumseagreen": [60, 179, 113],
	"mediumslateblue": [123, 104, 238],
	"mediumspringgreen": [0, 250, 154],
	"mediumturquoise": [72, 209, 204],
	"mediumvioletred": [199, 21, 133],
	"midnightblue": [25, 25, 112],
	"mintcream": [245, 255, 250],
	"mistyrose": [255, 228, 225],
	"moccasin": [255, 228, 181],
	"navajowhite": [255, 222, 173],
	"navy": [0, 0, 128],
	"oldlace": [253, 245, 230],
	"olive": [128, 128, 0],
	"olivedrab": [107, 142, 35],
	"orange": [255, 165, 0],
	"orangered": [255, 69, 0],
	"orchid": [218, 112, 214],
	"palegoldenrod": [238, 232, 170],
	"palegreen": [152, 251, 152],
	"paleturquoise": [175, 238, 238],
	"palevioletred": [219, 112, 147],
	"papayawhip": [255, 239, 213],
	"peachpuff": [255, 218, 185],
	"peru": [205, 133, 63],
	"pink": [255, 192, 203],
	"plum": [221, 160, 221],
	"powderblue": [176, 224, 230],
	"purple": [128, 0, 128],
	"rebeccapurple": [102, 51, 153],
	"red": [255, 0, 0],
	"rosybrown": [188, 143, 143],
	"royalblue": [65, 105, 225],
	"saddlebrown": [139, 69, 19],
	"salmon": [250, 128, 114],
	"sandybrown": [244, 164, 96],
	"seagreen": [46, 139, 87],
	"seashell": [255, 245, 238],
	"sienna": [160, 82, 45],
	"silver": [192, 192, 192],
	"skyblue": [135, 206, 235],
	"slateblue": [106, 90, 205],
	"slategray": [112, 128, 144],
	"slategrey": [112, 128, 144],
	"snow": [255, 250, 250],
	"springgreen": [0, 255, 127],
	"steelblue": [70, 130, 180],
	"tan": [210, 180, 140],
	"teal": [0, 128, 128],
	"thistle": [216, 191, 216],
	"tomato": [255, 99, 71],
	"turquoise": [64, 224, 208],
	"violet": [238, 130, 238],
	"wheat": [245, 222, 179],
	"white": [255, 255, 255],
	"whitesmoke": [245, 245, 245],
	"yellow": [255, 255, 0],
	"yellowgreen": [154, 205, 50]
};

/* MIT license */


var colorString = {
   getRgba: getRgba,
   getHsla: getHsla,
   getRgb: getRgb,
   getHsl: getHsl,
   getHwb: getHwb,
   getAlpha: getAlpha,

   hexString: hexString,
   rgbString: rgbString,
   rgbaString: rgbaString,
   percentString: percentString,
   percentaString: percentaString,
   hslString: hslString,
   hslaString: hslaString,
   hwbString: hwbString,
   keyword: keyword
};

function getRgba(string) {
   if (!string) {
      return;
   }
   var abbr =  /^#([a-fA-F0-9]{3,4})$/i,
       hex =  /^#([a-fA-F0-9]{6}([a-fA-F0-9]{2})?)$/i,
       rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
       per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
       keyword = /(\w+)/;

   var rgb = [0, 0, 0],
       a = 1,
       match = string.match(abbr),
       hexAlpha = "";
   if (match) {
      match = match[1];
      hexAlpha = match[3];
      for (var i = 0; i < rgb.length; i++) {
         rgb[i] = parseInt(match[i] + match[i], 16);
      }
      if (hexAlpha) {
         a = Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100;
      }
   }
   else if (match = string.match(hex)) {
      hexAlpha = match[2];
      match = match[1];
      for (var i = 0; i < rgb.length; i++) {
         rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
      }
      if (hexAlpha) {
         a = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100;
      }
   }
   else if (match = string.match(rgba)) {
      for (var i = 0; i < rgb.length; i++) {
         rgb[i] = parseInt(match[i + 1]);
      }
      a = parseFloat(match[4]);
   }
   else if (match = string.match(per)) {
      for (var i = 0; i < rgb.length; i++) {
         rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
      }
      a = parseFloat(match[4]);
   }
   else if (match = string.match(keyword)) {
      if (match[1] == "transparent") {
         return [0, 0, 0, 0];
      }
      rgb = colorName$1[match[1]];
      if (!rgb) {
         return;
      }
   }

   for (var i = 0; i < rgb.length; i++) {
      rgb[i] = scale(rgb[i], 0, 255);
   }
   if (!a && a != 0) {
      a = 1;
   }
   else {
      a = scale(a, 0, 1);
   }
   rgb[3] = a;
   return rgb;
}

function getHsla(string) {
   if (!string) {
      return;
   }
   var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
   var match = string.match(hsl);
   if (match) {
      var alpha = parseFloat(match[4]);
      var h = scale(parseInt(match[1]), 0, 360),
          s = scale(parseFloat(match[2]), 0, 100),
          l = scale(parseFloat(match[3]), 0, 100),
          a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
      return [h, s, l, a];
   }
}

function getHwb(string) {
   if (!string) {
      return;
   }
   var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
   var match = string.match(hwb);
   if (match) {
    var alpha = parseFloat(match[4]);
      var h = scale(parseInt(match[1]), 0, 360),
          w = scale(parseFloat(match[2]), 0, 100),
          b = scale(parseFloat(match[3]), 0, 100),
          a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
      return [h, w, b, a];
   }
}

function getRgb(string) {
   var rgba = getRgba(string);
   return rgba && rgba.slice(0, 3);
}

function getHsl(string) {
  var hsla = getHsla(string);
  return hsla && hsla.slice(0, 3);
}

function getAlpha(string) {
   var vals = getRgba(string);
   if (vals) {
      return vals[3];
   }
   else if (vals = getHsla(string)) {
      return vals[3];
   }
   else if (vals = getHwb(string)) {
      return vals[3];
   }
}

// generators
function hexString(rgba, a) {
   var a = (a !== undefined && rgba.length === 3) ? a : rgba[3];
   return "#" + hexDouble(rgba[0]) 
              + hexDouble(rgba[1])
              + hexDouble(rgba[2])
              + (
                 (a >= 0 && a < 1)
                 ? hexDouble(Math.round(a * 255))
                 : ""
              );
}

function rgbString(rgba, alpha) {
   if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
      return rgbaString(rgba, alpha);
   }
   return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
}

function rgbaString(rgba, alpha) {
   if (alpha === undefined) {
      alpha = (rgba[3] !== undefined ? rgba[3] : 1);
   }
   return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
           + ", " + alpha + ")";
}

function percentString(rgba, alpha) {
   if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
      return percentaString(rgba, alpha);
   }
   var r = Math.round(rgba[0]/255 * 100),
       g = Math.round(rgba[1]/255 * 100),
       b = Math.round(rgba[2]/255 * 100);

   return "rgb(" + r + "%, " + g + "%, " + b + "%)";
}

function percentaString(rgba, alpha) {
   var r = Math.round(rgba[0]/255 * 100),
       g = Math.round(rgba[1]/255 * 100),
       b = Math.round(rgba[2]/255 * 100);
   return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
}

function hslString(hsla, alpha) {
   if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
      return hslaString(hsla, alpha);
   }
   return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
}

function hslaString(hsla, alpha) {
   if (alpha === undefined) {
      alpha = (hsla[3] !== undefined ? hsla[3] : 1);
   }
   return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
           + alpha + ")";
}

// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
// (hwb have alpha optional & 1 is default value)
function hwbString(hwb, alpha) {
   if (alpha === undefined) {
      alpha = (hwb[3] !== undefined ? hwb[3] : 1);
   }
   return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
           + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
}

function keyword(rgb) {
  return reverseNames[rgb.slice(0, 3)];
}

// helpers
function scale(num, min, max) {
   return Math.min(Math.max(min, num), max);
}

function hexDouble(num) {
  var str = num.toString(16).toUpperCase();
  return (str.length < 2) ? "0" + str : str;
}


//create a list of reverse color names
var reverseNames = {};
for (var name in colorName$1) {
   reverseNames[colorName$1[name]] = name;
}

/* MIT license */



var Color = function (obj) {
	if (obj instanceof Color) {
		return obj;
	}
	if (!(this instanceof Color)) {
		return new Color(obj);
	}

	this.valid = false;
	this.values = {
		rgb: [0, 0, 0],
		hsl: [0, 0, 0],
		hsv: [0, 0, 0],
		hwb: [0, 0, 0],
		cmyk: [0, 0, 0, 0],
		alpha: 1
	};

	// parse Color() argument
	var vals;
	if (typeof obj === 'string') {
		vals = colorString.getRgba(obj);
		if (vals) {
			this.setValues('rgb', vals);
		} else if (vals = colorString.getHsla(obj)) {
			this.setValues('hsl', vals);
		} else if (vals = colorString.getHwb(obj)) {
			this.setValues('hwb', vals);
		}
	} else if (typeof obj === 'object') {
		vals = obj;
		if (vals.r !== undefined || vals.red !== undefined) {
			this.setValues('rgb', vals);
		} else if (vals.l !== undefined || vals.lightness !== undefined) {
			this.setValues('hsl', vals);
		} else if (vals.v !== undefined || vals.value !== undefined) {
			this.setValues('hsv', vals);
		} else if (vals.w !== undefined || vals.whiteness !== undefined) {
			this.setValues('hwb', vals);
		} else if (vals.c !== undefined || vals.cyan !== undefined) {
			this.setValues('cmyk', vals);
		}
	}
};

Color.prototype = {
	isValid: function () {
		return this.valid;
	},
	rgb: function () {
		return this.setSpace('rgb', arguments);
	},
	hsl: function () {
		return this.setSpace('hsl', arguments);
	},
	hsv: function () {
		return this.setSpace('hsv', arguments);
	},
	hwb: function () {
		return this.setSpace('hwb', arguments);
	},
	cmyk: function () {
		return this.setSpace('cmyk', arguments);
	},

	rgbArray: function () {
		return this.values.rgb;
	},
	hslArray: function () {
		return this.values.hsl;
	},
	hsvArray: function () {
		return this.values.hsv;
	},
	hwbArray: function () {
		var values = this.values;
		if (values.alpha !== 1) {
			return values.hwb.concat([values.alpha]);
		}
		return values.hwb;
	},
	cmykArray: function () {
		return this.values.cmyk;
	},
	rgbaArray: function () {
		var values = this.values;
		return values.rgb.concat([values.alpha]);
	},
	hslaArray: function () {
		var values = this.values;
		return values.hsl.concat([values.alpha]);
	},
	alpha: function (val) {
		if (val === undefined) {
			return this.values.alpha;
		}
		this.setValues('alpha', val);
		return this;
	},

	red: function (val) {
		return this.setChannel('rgb', 0, val);
	},
	green: function (val) {
		return this.setChannel('rgb', 1, val);
	},
	blue: function (val) {
		return this.setChannel('rgb', 2, val);
	},
	hue: function (val) {
		if (val) {
			val %= 360;
			val = val < 0 ? 360 + val : val;
		}
		return this.setChannel('hsl', 0, val);
	},
	saturation: function (val) {
		return this.setChannel('hsl', 1, val);
	},
	lightness: function (val) {
		return this.setChannel('hsl', 2, val);
	},
	saturationv: function (val) {
		return this.setChannel('hsv', 1, val);
	},
	whiteness: function (val) {
		return this.setChannel('hwb', 1, val);
	},
	blackness: function (val) {
		return this.setChannel('hwb', 2, val);
	},
	value: function (val) {
		return this.setChannel('hsv', 2, val);
	},
	cyan: function (val) {
		return this.setChannel('cmyk', 0, val);
	},
	magenta: function (val) {
		return this.setChannel('cmyk', 1, val);
	},
	yellow: function (val) {
		return this.setChannel('cmyk', 2, val);
	},
	black: function (val) {
		return this.setChannel('cmyk', 3, val);
	},

	hexString: function () {
		return colorString.hexString(this.values.rgb);
	},
	rgbString: function () {
		return colorString.rgbString(this.values.rgb, this.values.alpha);
	},
	rgbaString: function () {
		return colorString.rgbaString(this.values.rgb, this.values.alpha);
	},
	percentString: function () {
		return colorString.percentString(this.values.rgb, this.values.alpha);
	},
	hslString: function () {
		return colorString.hslString(this.values.hsl, this.values.alpha);
	},
	hslaString: function () {
		return colorString.hslaString(this.values.hsl, this.values.alpha);
	},
	hwbString: function () {
		return colorString.hwbString(this.values.hwb, this.values.alpha);
	},
	keyword: function () {
		return colorString.keyword(this.values.rgb, this.values.alpha);
	},

	rgbNumber: function () {
		var rgb = this.values.rgb;
		return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
	},

	luminosity: function () {
		// http://www.w3.org/TR/WCAG20/#relativeluminancedef
		var rgb = this.values.rgb;
		var lum = [];
		for (var i = 0; i < rgb.length; i++) {
			var chan = rgb[i] / 255;
			lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
		}
		return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
	},

	contrast: function (color2) {
		// http://www.w3.org/TR/WCAG20/#contrast-ratiodef
		var lum1 = this.luminosity();
		var lum2 = color2.luminosity();
		if (lum1 > lum2) {
			return (lum1 + 0.05) / (lum2 + 0.05);
		}
		return (lum2 + 0.05) / (lum1 + 0.05);
	},

	level: function (color2) {
		var contrastRatio = this.contrast(color2);
		if (contrastRatio >= 7.1) {
			return 'AAA';
		}

		return (contrastRatio >= 4.5) ? 'AA' : '';
	},

	dark: function () {
		// YIQ equation from http://24ways.org/2010/calculating-color-contrast
		var rgb = this.values.rgb;
		var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
		return yiq < 128;
	},

	light: function () {
		return !this.dark();
	},

	negate: function () {
		var rgb = [];
		for (var i = 0; i < 3; i++) {
			rgb[i] = 255 - this.values.rgb[i];
		}
		this.setValues('rgb', rgb);
		return this;
	},

	lighten: function (ratio) {
		var hsl = this.values.hsl;
		hsl[2] += hsl[2] * ratio;
		this.setValues('hsl', hsl);
		return this;
	},

	darken: function (ratio) {
		var hsl = this.values.hsl;
		hsl[2] -= hsl[2] * ratio;
		this.setValues('hsl', hsl);
		return this;
	},

	saturate: function (ratio) {
		var hsl = this.values.hsl;
		hsl[1] += hsl[1] * ratio;
		this.setValues('hsl', hsl);
		return this;
	},

	desaturate: function (ratio) {
		var hsl = this.values.hsl;
		hsl[1] -= hsl[1] * ratio;
		this.setValues('hsl', hsl);
		return this;
	},

	whiten: function (ratio) {
		var hwb = this.values.hwb;
		hwb[1] += hwb[1] * ratio;
		this.setValues('hwb', hwb);
		return this;
	},

	blacken: function (ratio) {
		var hwb = this.values.hwb;
		hwb[2] += hwb[2] * ratio;
		this.setValues('hwb', hwb);
		return this;
	},

	greyscale: function () {
		var rgb = this.values.rgb;
		// http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
		var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
		this.setValues('rgb', [val, val, val]);
		return this;
	},

	clearer: function (ratio) {
		var alpha = this.values.alpha;
		this.setValues('alpha', alpha - (alpha * ratio));
		return this;
	},

	opaquer: function (ratio) {
		var alpha = this.values.alpha;
		this.setValues('alpha', alpha + (alpha * ratio));
		return this;
	},

	rotate: function (degrees) {
		var hsl = this.values.hsl;
		var hue = (hsl[0] + degrees) % 360;
		hsl[0] = hue < 0 ? 360 + hue : hue;
		this.setValues('hsl', hsl);
		return this;
	},

	/**
	 * Ported from sass implementation in C
	 * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
	 */
	mix: function (mixinColor, weight) {
		var color1 = this;
		var color2 = mixinColor;
		var p = weight === undefined ? 0.5 : weight;

		var w = 2 * p - 1;
		var a = color1.alpha() - color2.alpha();

		var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
		var w2 = 1 - w1;

		return this
			.rgb(
				w1 * color1.red() + w2 * color2.red(),
				w1 * color1.green() + w2 * color2.green(),
				w1 * color1.blue() + w2 * color2.blue()
			)
			.alpha(color1.alpha() * p + color2.alpha() * (1 - p));
	},

	toJSON: function () {
		return this.rgb();
	},

	clone: function () {
		// NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
		// making the final build way to big to embed in Chart.js. So let's do it manually,
		// assuming that values to clone are 1 dimension arrays containing only numbers,
		// except 'alpha' which is a number.
		var result = new Color();
		var source = this.values;
		var target = result.values;
		var value, type;

		for (var prop in source) {
			if (source.hasOwnProperty(prop)) {
				value = source[prop];
				type = ({}).toString.call(value);
				if (type === '[object Array]') {
					target[prop] = value.slice(0);
				} else if (type === '[object Number]') {
					target[prop] = value;
				} else {
					console.error('unexpected color value:', value);
				}
			}
		}

		return result;
	}
};

Color.prototype.spaces = {
	rgb: ['red', 'green', 'blue'],
	hsl: ['hue', 'saturation', 'lightness'],
	hsv: ['hue', 'saturation', 'value'],
	hwb: ['hue', 'whiteness', 'blackness'],
	cmyk: ['cyan', 'magenta', 'yellow', 'black']
};

Color.prototype.maxes = {
	rgb: [255, 255, 255],
	hsl: [360, 100, 100],
	hsv: [360, 100, 100],
	hwb: [360, 100, 100],
	cmyk: [100, 100, 100, 100]
};

Color.prototype.getValues = function (space) {
	var values = this.values;
	var vals = {};

	for (var i = 0; i < space.length; i++) {
		vals[space.charAt(i)] = values[space][i];
	}

	if (values.alpha !== 1) {
		vals.a = values.alpha;
	}

	// {r: 255, g: 255, b: 255, a: 0.4}
	return vals;
};

Color.prototype.setValues = function (space, vals) {
	var values = this.values;
	var spaces = this.spaces;
	var maxes = this.maxes;
	var alpha = 1;
	var i;

	this.valid = true;

	if (space === 'alpha') {
		alpha = vals;
	} else if (vals.length) {
		// [10, 10, 10]
		values[space] = vals.slice(0, space.length);
		alpha = vals[space.length];
	} else if (vals[space.charAt(0)] !== undefined) {
		// {r: 10, g: 10, b: 10}
		for (i = 0; i < space.length; i++) {
			values[space][i] = vals[space.charAt(i)];
		}

		alpha = vals.a;
	} else if (vals[spaces[space][0]] !== undefined) {
		// {red: 10, green: 10, blue: 10}
		var chans = spaces[space];

		for (i = 0; i < space.length; i++) {
			values[space][i] = vals[chans[i]];
		}

		alpha = vals.alpha;
	}

	values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));

	if (space === 'alpha') {
		return false;
	}

	var capped;

	// cap values of the space prior converting all values
	for (i = 0; i < space.length; i++) {
		capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
		values[space][i] = Math.round(capped);
	}

	// convert to all the other color spaces
	for (var sname in spaces) {
		if (sname !== space) {
			values[sname] = colorConvert[space][sname](values[space]);
		}
	}

	return true;
};

Color.prototype.setSpace = function (space, args) {
	var vals = args[0];

	if (vals === undefined) {
		// color.rgb()
		return this.getValues(space);
	}

	// color.rgb(10, 10, 10)
	if (typeof vals === 'number') {
		vals = Array.prototype.slice.call(args);
	}

	this.setValues(space, vals);
	return this;
};

Color.prototype.setChannel = function (space, index, val) {
	var svalues = this.values[space];
	if (val === undefined) {
		// color.red()
		return svalues[index];
	} else if (val === svalues[index]) {
		// color.red(color.red())
		return this;
	}

	// color.red(100)
	svalues[index] = val;
	this.setValues(space, svalues);

	return this;
};

if (typeof window !== 'undefined') {
	window.Color = Color;
}

var chartjsColor = Color;

function isValidKey(key) {
	return ['__proto__', 'prototype', 'constructor'].indexOf(key) === -1;
}

/**
 * @namespace Chart.helpers
 */
var helpers = {
	/**
	 * An empty function that can be used, for example, for optional callback.
	 */
	noop: function() {},

	/**
	 * Returns a unique id, sequentially generated from a global variable.
	 * @returns {number}
	 * @function
	 */
	uid: (function() {
		var id = 0;
		return function() {
			return id++;
		};
	}()),

	/**
	 * Returns true if `value` is neither null nor undefined, else returns false.
	 * @param {*} value - The value to test.
	 * @returns {boolean}
	 * @since 2.7.0
	 */
	isNullOrUndef: function(value) {
		return value === null || typeof value === 'undefined';
	},

	/**
	 * Returns true if `value` is an array (including typed arrays), else returns false.
	 * @param {*} value - The value to test.
	 * @returns {boolean}
	 * @function
	 */
	isArray: function(value) {
		if (Array.isArray && Array.isArray(value)) {
			return true;
		}
		var type = Object.prototype.toString.call(value);
		if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') {
			return true;
		}
		return false;
	},

	/**
	 * Returns true if `value` is an object (excluding null), else returns false.
	 * @param {*} value - The value to test.
	 * @returns {boolean}
	 * @since 2.7.0
	 */
	isObject: function(value) {
		return value !== null && Object.prototype.toString.call(value) === '[object Object]';
	},

	/**
	 * Returns true if `value` is a finite number, else returns false
	 * @param {*} value  - The value to test.
	 * @returns {boolean}
	 */
	isFinite: function(value) {
		return (typeof value === 'number' || value instanceof Number) && isFinite(value);
	},

	/**
	 * Returns `value` if defined, else returns `defaultValue`.
	 * @param {*} value - The value to return if defined.
	 * @param {*} defaultValue - The value to return if `value` is undefined.
	 * @returns {*}
	 */
	valueOrDefault: function(value, defaultValue) {
		return typeof value === 'undefined' ? defaultValue : value;
	},

	/**
	 * Returns value at the given `index` in array if defined, else returns `defaultValue`.
	 * @param {Array} value - The array to lookup for value at `index`.
	 * @param {number} index - The index in `value` to lookup for value.
	 * @param {*} defaultValue - The value to return if `value[index]` is undefined.
	 * @returns {*}
	 */
	valueAtIndexOrDefault: function(value, index, defaultValue) {
		return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
	},

	/**
	 * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
	 * value returned by `fn`. If `fn` is not a function, this method returns undefined.
	 * @param {function} fn - The function to call.
	 * @param {Array|undefined|null} args - The arguments with which `fn` should be called.
	 * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
	 * @returns {*}
	 */
	callback: function(fn, args, thisArg) {
		if (fn && typeof fn.call === 'function') {
			return fn.apply(thisArg, args);
		}
	},

	/**
	 * Note(SB) for performance sake, this method should only be used when loopable type
	 * is unknown or in none intensive code (not called often and small loopable). Else
	 * it's preferable to use a regular for() loop and save extra function calls.
	 * @param {object|Array} loopable - The object or array to be iterated.
	 * @param {function} fn - The function to call for each item.
	 * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
	 * @param {boolean} [reverse] - If true, iterates backward on the loopable.
	 */
	each: function(loopable, fn, thisArg, reverse) {
		var i, len, keys;
		if (helpers.isArray(loopable)) {
			len = loopable.length;
			if (reverse) {
				for (i = len - 1; i >= 0; i--) {
					fn.call(thisArg, loopable[i], i);
				}
			} else {
				for (i = 0; i < len; i++) {
					fn.call(thisArg, loopable[i], i);
				}
			}
		} else if (helpers.isObject(loopable)) {
			keys = Object.keys(loopable);
			len = keys.length;
			for (i = 0; i < len; i++) {
				fn.call(thisArg, loopable[keys[i]], keys[i]);
			}
		}
	},

	/**
	 * Returns true if the `a0` and `a1` arrays have the same content, else returns false.
	 * @see https://stackoverflow.com/a/14853974
	 * @param {Array} a0 - The array to compare
	 * @param {Array} a1 - The array to compare
	 * @returns {boolean}
	 */
	arrayEquals: function(a0, a1) {
		var i, ilen, v0, v1;

		if (!a0 || !a1 || a0.length !== a1.length) {
			return false;
		}

		for (i = 0, ilen = a0.length; i < ilen; ++i) {
			v0 = a0[i];
			v1 = a1[i];

			if (v0 instanceof Array && v1 instanceof Array) {
				if (!helpers.arrayEquals(v0, v1)) {
					return false;
				}
			} else if (v0 !== v1) {
				// NOTE: two different object instances will never be equal: {x:20} != {x:20}
				return false;
			}
		}

		return true;
	},

	/**
	 * Returns a deep copy of `source` without keeping references on objects and arrays.
	 * @param {*} source - The value to clone.
	 * @returns {*}
	 */
	clone: function(source) {
		if (helpers.isArray(source)) {
			return source.map(helpers.clone);
		}

		if (helpers.isObject(source)) {
			var target = Object.create(source);
			var keys = Object.keys(source);
			var klen = keys.length;
			var k = 0;

			for (; k < klen; ++k) {
				target[keys[k]] = helpers.clone(source[keys[k]]);
			}

			return target;
		}

		return source;
	},

	/**
	 * The default merger when Chart.helpers.merge is called without merger option.
	 * Note(SB): also used by mergeConfig and mergeScaleConfig as fallback.
	 * @private
	 */
	_merger: function(key, target, source, options) {
		if (!isValidKey(key)) {
			// We want to ensure we do not copy prototypes over
			// as this can pollute global namespaces
			return;
		}

		var tval = target[key];
		var sval = source[key];

		if (helpers.isObject(tval) && helpers.isObject(sval)) {
			helpers.merge(tval, sval, options);
		} else {
			target[key] = helpers.clone(sval);
		}
	},

	/**
	 * Merges source[key] in target[key] only if target[key] is undefined.
	 * @private
	 */
	_mergerIf: function(key, target, source) {
		if (!isValidKey(key)) {
			// We want to ensure we do not copy prototypes over
			// as this can pollute global namespaces
			return;
		}

		var tval = target[key];
		var sval = source[key];

		if (helpers.isObject(tval) && helpers.isObject(sval)) {
			helpers.mergeIf(tval, sval);
		} else if (!target.hasOwnProperty(key)) {
			target[key] = helpers.clone(sval);
		}
	},

	/**
	 * Recursively deep copies `source` properties into `target` with the given `options`.
	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
	 * @param {object} target - The target object in which all sources are merged into.
	 * @param {object|object[]} source - Object(s) to merge into `target`.
	 * @param {object} [options] - Merging options:
	 * @param {function} [options.merger] - The merge method (key, target, source, options)
	 * @returns {object} The `target` object.
	 */
	merge: function(target, source, options) {
		var sources = helpers.isArray(source) ? source : [source];
		var ilen = sources.length;
		var merge, i, keys, klen, k;

		if (!helpers.isObject(target)) {
			return target;
		}

		options = options || {};
		merge = options.merger || helpers._merger;

		for (i = 0; i < ilen; ++i) {
			source = sources[i];
			if (!helpers.isObject(source)) {
				continue;
			}

			keys = Object.keys(source);
			for (k = 0, klen = keys.length; k < klen; ++k) {
				merge(keys[k], target, source, options);
			}
		}

		return target;
	},

	/**
	 * Recursively deep copies `source` properties into `target` *only* if not defined in target.
	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
	 * @param {object} target - The target object in which all sources are merged into.
	 * @param {object|object[]} source - Object(s) to merge into `target`.
	 * @returns {object} The `target` object.
	 */
	mergeIf: function(target, source) {
		return helpers.merge(target, source, {merger: helpers._mergerIf});
	},

	/**
	 * Applies the contents of two or more objects together into the first object.
	 * @param {object} target - The target object in which all objects are merged into.
	 * @param {object} arg1 - Object containing additional properties to merge in target.
	 * @param {object} argN - Additional objects containing properties to merge in target.
	 * @returns {object} The `target` object.
	 */
	extend: Object.assign || function(target) {
		return helpers.merge(target, [].slice.call(arguments, 1), {
			merger: function(key, dst, src) {
				dst[key] = src[key];
			}
		});
	},

	/**
	 * Basic javascript inheritance based on the model created in Backbone.js
	 */
	inherits: function(extensions) {
		var me = this;
		var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
			return me.apply(this, arguments);
		};

		var Surrogate = function() {
			this.constructor = ChartElement;
		};

		Surrogate.prototype = me.prototype;
		ChartElement.prototype = new Surrogate();
		ChartElement.extend = helpers.inherits;

		if (extensions) {
			helpers.extend(ChartElement.prototype, extensions);
		}

		ChartElement.__super__ = me.prototype;
		return ChartElement;
	},

	_deprecated: function(scope, value, previous, current) {
		if (value !== undefined) {
			console.warn(scope + ': "' + previous +
				'" is deprecated. Please use "' + current + '" instead');
		}
	}
};

var helpers_core = helpers;

// DEPRECATIONS

/**
 * Provided for backward compatibility, use Chart.helpers.callback instead.
 * @function Chart.helpers.callCallback
 * @deprecated since version 2.6.0
 * @todo remove at version 3
 * @private
 */
helpers.callCallback = helpers.callback;

/**
 * Provided for backward compatibility, use Array.prototype.indexOf instead.
 * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
 * @function Chart.helpers.indexOf
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers.indexOf = function(array, item, fromIndex) {
	return Array.prototype.indexOf.call(array, item, fromIndex);
};

/**
 * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
 * @function Chart.helpers.getValueOrDefault
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers.getValueOrDefault = helpers.valueOrDefault;

/**
 * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
 * @function Chart.helpers.getValueAtIndexOrDefault
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault;

/**
 * Easing functions adapted from Robert Penner's easing equations.
 * @namespace Chart.helpers.easingEffects
 * @see http://www.robertpenner.com/easing/
 */
var effects = {
	linear: function(t) {
		return t;
	},

	easeInQuad: function(t) {
		return t * t;
	},

	easeOutQuad: function(t) {
		return -t * (t - 2);
	},

	easeInOutQuad: function(t) {
		if ((t /= 0.5) < 1) {
			return 0.5 * t * t;
		}
		return -0.5 * ((--t) * (t - 2) - 1);
	},

	easeInCubic: function(t) {
		return t * t * t;
	},

	easeOutCubic: function(t) {
		return (t = t - 1) * t * t + 1;
	},

	easeInOutCubic: function(t) {
		if ((t /= 0.5) < 1) {
			return 0.5 * t * t * t;
		}
		return 0.5 * ((t -= 2) * t * t + 2);
	},

	easeInQuart: function(t) {
		return t * t * t * t;
	},

	easeOutQuart: function(t) {
		return -((t = t - 1) * t * t * t - 1);
	},

	easeInOutQuart: function(t) {
		if ((t /= 0.5) < 1) {
			return 0.5 * t * t * t * t;
		}
		return -0.5 * ((t -= 2) * t * t * t - 2);
	},

	easeInQuint: function(t) {
		return t * t * t * t * t;
	},

	easeOutQuint: function(t) {
		return (t = t - 1) * t * t * t * t + 1;
	},

	easeInOutQuint: function(t) {
		if ((t /= 0.5) < 1) {
			return 0.5 * t * t * t * t * t;
		}
		return 0.5 * ((t -= 2) * t * t * t * t + 2);
	},

	easeInSine: function(t) {
		return -Math.cos(t * (Math.PI / 2)) + 1;
	},

	easeOutSine: function(t) {
		return Math.sin(t * (Math.PI / 2));
	},

	easeInOutSine: function(t) {
		return -0.5 * (Math.cos(Math.PI * t) - 1);
	},

	easeInExpo: function(t) {
		return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
	},

	easeOutExpo: function(t) {
		return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
	},

	easeInOutExpo: function(t) {
		if (t === 0) {
			return 0;
		}
		if (t === 1) {
			return 1;
		}
		if ((t /= 0.5) < 1) {
			return 0.5 * Math.pow(2, 10 * (t - 1));
		}
		return 0.5 * (-Math.pow(2, -10 * --t) + 2);
	},

	easeInCirc: function(t) {
		if (t >= 1) {
			return t;
		}
		return -(Math.sqrt(1 - t * t) - 1);
	},

	easeOutCirc: function(t) {
		return Math.sqrt(1 - (t = t - 1) * t);
	},

	easeInOutCirc: function(t) {
		if ((t /= 0.5) < 1) {
			return -0.5 * (Math.sqrt(1 - t * t) - 1);
		}
		return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1);
	},

	easeInElastic: function(t) {
		var s = 1.70158;
		var p = 0;
		var a = 1;
		if (t === 0) {
			return 0;
		}
		if (t === 1) {
			return 1;
		}
		if (!p) {
			p = 0.3;
		}
		if (a < 1) {
			a = 1;
			s = p / 4;
		} else {
			s = p / (2 * Math.PI) * Math.asin(1 / a);
		}
		return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
	},

	easeOutElastic: function(t) {
		var s = 1.70158;
		var p = 0;
		var a = 1;
		if (t === 0) {
			return 0;
		}
		if (t === 1) {
			return 1;
		}
		if (!p) {
			p = 0.3;
		}
		if (a < 1) {
			a = 1;
			s = p / 4;
		} else {
			s = p / (2 * Math.PI) * Math.asin(1 / a);
		}
		return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1;
	},

	easeInOutElastic: function(t) {
		var s = 1.70158;
		var p = 0;
		var a = 1;
		if (t === 0) {
			return 0;
		}
		if ((t /= 0.5) === 2) {
			return 1;
		}
		if (!p) {
			p = 0.45;
		}
		if (a < 1) {
			a = 1;
			s = p / 4;
		} else {
			s = p / (2 * Math.PI) * Math.asin(1 / a);
		}
		if (t < 1) {
			return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
		}
		return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
	},
	easeInBack: function(t) {
		var s = 1.70158;
		return t * t * ((s + 1) * t - s);
	},

	easeOutBack: function(t) {
		var s = 1.70158;
		return (t = t - 1) * t * ((s + 1) * t + s) + 1;
	},

	easeInOutBack: function(t) {
		var s = 1.70158;
		if ((t /= 0.5) < 1) {
			return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
		}
		return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
	},

	easeInBounce: function(t) {
		return 1 - effects.easeOutBounce(1 - t);
	},

	easeOutBounce: function(t) {
		if (t < (1 / 2.75)) {
			return 7.5625 * t * t;
		}
		if (t < (2 / 2.75)) {
			return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
		}
		if (t < (2.5 / 2.75)) {
			return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
		}
		return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
	},

	easeInOutBounce: function(t) {
		if (t < 0.5) {
			return effects.easeInBounce(t * 2) * 0.5;
		}
		return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
	}
};

var helpers_easing = {
	effects: effects
};

// DEPRECATIONS

/**
 * Provided for backward compatibility, use Chart.helpers.easing.effects instead.
 * @function Chart.helpers.easingEffects
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers_core.easingEffects = effects;

var PI = Math.PI;
var RAD_PER_DEG = PI / 180;
var DOUBLE_PI = PI * 2;
var HALF_PI = PI / 2;
var QUARTER_PI = PI / 4;
var TWO_THIRDS_PI = PI * 2 / 3;

/**
 * @namespace Chart.helpers.canvas
 */
var exports$1 = {
	/**
	 * Clears the entire canvas associated to the given `chart`.
	 * @param {Chart} chart - The chart for which to clear the canvas.
	 */
	clear: function(chart) {
		chart.ctx.clearRect(0, 0, chart.width, chart.height);
	},

	/**
	 * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
	 * given size (width, height) and the same `radius` for all corners.
	 * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
	 * @param {number} x - The x axis of the coordinate for the rectangle starting point.
	 * @param {number} y - The y axis of the coordinate for the rectangle starting point.
	 * @param {number} width - The rectangle's width.
	 * @param {number} height - The rectangle's height.
	 * @param {number} radius - The rounded amount (in pixels) for the four corners.
	 * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
	 */
	roundedRect: function(ctx, x, y, width, height, radius) {
		if (radius) {
			var r = Math.min(radius, height / 2, width / 2);
			var left = x + r;
			var top = y + r;
			var right = x + width - r;
			var bottom = y + height - r;

			ctx.moveTo(x, top);
			if (left < right && top < bottom) {
				ctx.arc(left, top, r, -PI, -HALF_PI);
				ctx.arc(right, top, r, -HALF_PI, 0);
				ctx.arc(right, bottom, r, 0, HALF_PI);
				ctx.arc(left, bottom, r, HALF_PI, PI);
			} else if (left < right) {
				ctx.moveTo(left, y);
				ctx.arc(right, top, r, -HALF_PI, HALF_PI);
				ctx.arc(left, top, r, HALF_PI, PI + HALF_PI);
			} else if (top < bottom) {
				ctx.arc(left, top, r, -PI, 0);
				ctx.arc(left, bottom, r, 0, PI);
			} else {
				ctx.arc(left, top, r, -PI, PI);
			}
			ctx.closePath();
			ctx.moveTo(x, y);
		} else {
			ctx.rect(x, y, width, height);
		}
	},

	drawPoint: function(ctx, style, radius, x, y, rotation) {
		var type, xOffset, yOffset, size, cornerRadius;
		var rad = (rotation || 0) * RAD_PER_DEG;

		if (style && typeof style === 'object') {
			type = style.toString();
			if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
				ctx.save();
				ctx.translate(x, y);
				ctx.rotate(rad);
				ctx.drawImage(style, -style.width / 2, -style.height / 2, style.width, style.height);
				ctx.restore();
				return;
			}
		}

		if (isNaN(radius) || radius <= 0) {
			return;
		}

		ctx.beginPath();

		switch (style) {
		// Default includes circle
		default:
			ctx.arc(x, y, radius, 0, DOUBLE_PI);
			ctx.closePath();
			break;
		case 'triangle':
			ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
			rad += TWO_THIRDS_PI;
			ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
			rad += TWO_THIRDS_PI;
			ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
			ctx.closePath();
			break;
		case 'rectRounded':
			// NOTE: the rounded rect implementation changed to use `arc` instead of
			// `quadraticCurveTo` since it generates better results when rect is
			// almost a circle. 0.516 (instead of 0.5) produces results with visually
			// closer proportion to the previous impl and it is inscribed in the
			// circle with `radius`. For more details, see the following PRs:
			// https://github.com/chartjs/Chart.js/issues/5597
			// https://github.com/chartjs/Chart.js/issues/5858
			cornerRadius = radius * 0.516;
			size = radius - cornerRadius;
			xOffset = Math.cos(rad + QUARTER_PI) * size;
			yOffset = Math.sin(rad + QUARTER_PI) * size;
			ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);
			ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad);
			ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI);
			ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);
			ctx.closePath();
			break;
		case 'rect':
			if (!rotation) {
				size = Math.SQRT1_2 * radius;
				ctx.rect(x - size, y - size, 2 * size, 2 * size);
				break;
			}
			rad += QUARTER_PI;
			/* falls through */
		case 'rectRot':
			xOffset = Math.cos(rad) * radius;
			yOffset = Math.sin(rad) * radius;
			ctx.moveTo(x - xOffset, y - yOffset);
			ctx.lineTo(x + yOffset, y - xOffset);
			ctx.lineTo(x + xOffset, y + yOffset);
			ctx.lineTo(x - yOffset, y + xOffset);
			ctx.closePath();
			break;
		case 'crossRot':
			rad += QUARTER_PI;
			/* falls through */
		case 'cross':
			xOffset = Math.cos(rad) * radius;
			yOffset = Math.sin(rad) * radius;
			ctx.moveTo(x - xOffset, y - yOffset);
			ctx.lineTo(x + xOffset, y + yOffset);
			ctx.moveTo(x + yOffset, y - xOffset);
			ctx.lineTo(x - yOffset, y + xOffset);
			break;
		case 'star':
			xOffset = Math.cos(rad) * radius;
			yOffset = Math.sin(rad) * radius;
			ctx.moveTo(x - xOffset, y - yOffset);
			ctx.lineTo(x + xOffset, y + yOffset);
			ctx.moveTo(x + yOffset, y - xOffset);
			ctx.lineTo(x - yOffset, y + xOffset);
			rad += QUARTER_PI;
			xOffset = Math.cos(rad) * radius;
			yOffset = Math.sin(rad) * radius;
			ctx.moveTo(x - xOffset, y - yOffset);
			ctx.lineTo(x + xOffset, y + yOffset);
			ctx.moveTo(x + yOffset, y - xOffset);
			ctx.lineTo(x - yOffset, y + xOffset);
			break;
		case 'line':
			xOffset = Math.cos(rad) * radius;
			yOffset = Math.sin(rad) * radius;
			ctx.moveTo(x - xOffset, y - yOffset);
			ctx.lineTo(x + xOffset, y + yOffset);
			break;
		case 'dash':
			ctx.moveTo(x, y);
			ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius);
			break;
		}

		ctx.fill();
		ctx.stroke();
	},

	/**
	 * Returns true if the point is inside the rectangle
	 * @param {object} point - The point to test
	 * @param {object} area - The rectangle
	 * @returns {boolean}
	 * @private
	 */
	_isPointInArea: function(point, area) {
		var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.

		return point.x > area.left - epsilon && point.x < area.right + epsilon &&
			point.y > area.top - epsilon && point.y < area.bottom + epsilon;
	},

	clipArea: function(ctx, area) {
		ctx.save();
		ctx.beginPath();
		ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
		ctx.clip();
	},

	unclipArea: function(ctx) {
		ctx.restore();
	},

	lineTo: function(ctx, previous, target, flip) {
		var stepped = target.steppedLine;
		if (stepped) {
			if (stepped === 'middle') {
				var midpoint = (previous.x + target.x) / 2.0;
				ctx.lineTo(midpoint, flip ? target.y : previous.y);
				ctx.lineTo(midpoint, flip ? previous.y : target.y);
			} else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) {
				ctx.lineTo(previous.x, target.y);
			} else {
				ctx.lineTo(target.x, previous.y);
			}
			ctx.lineTo(target.x, target.y);
			return;
		}

		if (!target.tension) {
			ctx.lineTo(target.x, target.y);
			return;
		}

		ctx.bezierCurveTo(
			flip ? previous.controlPointPreviousX : previous.controlPointNextX,
			flip ? previous.controlPointPreviousY : previous.controlPointNextY,
			flip ? target.controlPointNextX : target.controlPointPreviousX,
			flip ? target.controlPointNextY : target.controlPointPreviousY,
			target.x,
			target.y);
	}
};

var helpers_canvas = exports$1;

// DEPRECATIONS

/**
 * Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
 * @namespace Chart.helpers.clear
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers_core.clear = exports$1.clear;

/**
 * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
 * @namespace Chart.helpers.drawRoundedRectangle
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers_core.drawRoundedRectangle = function(ctx) {
	ctx.beginPath();
	exports$1.roundedRect.apply(exports$1, arguments);
};

var defaults = {
	/**
	 * @private
	 */
	_set: function(scope, values) {
		return helpers_core.merge(this[scope] || (this[scope] = {}), values);
	}
};

// TODO(v3): remove 'global' from namespace.  all default are global and
// there's inconsistency around which options are under 'global'
defaults._set('global', {
	defaultColor: 'rgba(0,0,0,0.1)',
	defaultFontColor: '#666',
	defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
	defaultFontSize: 12,
	defaultFontStyle: 'normal',
	defaultLineHeight: 1.2,
	showLines: true
});

var core_defaults = defaults;

var valueOrDefault = helpers_core.valueOrDefault;

/**
 * Converts the given font object into a CSS font string.
 * @param {object} font - A font object.
 * @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font
 * @private
 */
function toFontString(font) {
	if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) {
		return null;
	}

	return (font.style ? font.style + ' ' : '')
		+ (font.weight ? font.weight + ' ' : '')
		+ font.size + 'px '
		+ font.family;
}

/**
 * @alias Chart.helpers.options
 * @namespace
 */
var helpers_options = {
	/**
	 * Converts the given line height `value` in pixels for a specific font `size`.
	 * @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
	 * @param {number} size - The font size (in pixels) used to resolve relative `value`.
	 * @returns {number} The effective line height in pixels (size * 1.2 if value is invalid).
	 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
	 * @since 2.7.0
	 */
	toLineHeight: function(value, size) {
		var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
		if (!matches || matches[1] === 'normal') {
			return size * 1.2;
		}

		value = +matches[2];

		switch (matches[3]) {
		case 'px':
			return value;
		case '%':
			value /= 100;
			break;
		}

		return size * value;
	},

	/**
	 * Converts the given value into a padding object with pre-computed width/height.
	 * @param {number|object} value - If a number, set the value to all TRBL component,
	 *  else, if and object, use defined properties and sets undefined ones to 0.
	 * @returns {object} The padding values (top, right, bottom, left, width, height)
	 * @since 2.7.0
	 */
	toPadding: function(value) {
		var t, r, b, l;

		if (helpers_core.isObject(value)) {
			t = +value.top || 0;
			r = +value.right || 0;
			b = +value.bottom || 0;
			l = +value.left || 0;
		} else {
			t = r = b = l = +value || 0;
		}

		return {
			top: t,
			right: r,
			bottom: b,
			left: l,
			height: t + b,
			width: l + r
		};
	},

	/**
	 * Parses font options and returns the font object.
	 * @param {object} options - A object that contains font options to be parsed.
	 * @return {object} The font object.
	 * @todo Support font.* options and renamed to toFont().
	 * @private
	 */
	_parseFont: function(options) {
		var globalDefaults = core_defaults.global;
		var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
		var font = {
			family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily),
			lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size),
			size: size,
			style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle),
			weight: null,
			string: ''
		};

		font.string = toFontString(font);
		return font;
	},

	/**
	 * Evaluates the given `inputs` sequentially and returns the first defined value.
	 * @param {Array} inputs - An array of values, falling back to the last value.
	 * @param {object} [context] - If defined and the current value is a function, the value
	 * is called with `context` as first argument and the result becomes the new input.
	 * @param {number} [index] - If defined and the current value is an array, the value
	 * at `index` become the new input.
	 * @param {object} [info] - object to return information about resolution in
	 * @param {boolean} [info.cacheable] - Will be set to `false` if option is not cacheable.
	 * @since 2.7.0
	 */
	resolve: function(inputs, context, index, info) {
		var cacheable = true;
		var i, ilen, value;

		for (i = 0, ilen = inputs.length; i < ilen; ++i) {
			value = inputs[i];
			if (value === undefined) {
				continue;
			}
			if (context !== undefined && typeof value === 'function') {
				value = value(context);
				cacheable = false;
			}
			if (index !== undefined && helpers_core.isArray(value)) {
				value = value[index];
				cacheable = false;
			}
			if (value !== undefined) {
				if (info && !cacheable) {
					info.cacheable = false;
				}
				return value;
			}
		}
	}
};

/**
 * @alias Chart.helpers.math
 * @namespace
 */
var exports$2 = {
	/**
	 * Returns an array of factors sorted from 1 to sqrt(value)
	 * @private
	 */
	_factorize: function(value) {
		var result = [];
		var sqrt = Math.sqrt(value);
		var i;

		for (i = 1; i < sqrt; i++) {
			if (value % i === 0) {
				result.push(i);
				result.push(value / i);
			}
		}
		if (sqrt === (sqrt | 0)) { // if value is a square number
			result.push(sqrt);
		}

		result.sort(function(a, b) {
			return a - b;
		}).pop();
		return result;
	},

	log10: Math.log10 || function(x) {
		var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10.
		// Check for whole powers of 10,
		// which due to floating point rounding error should be corrected.
		var powerOf10 = Math.round(exponent);
		var isPowerOf10 = x === Math.pow(10, powerOf10);

		return isPowerOf10 ? powerOf10 : exponent;
	}
};

var helpers_math = exports$2;

// DEPRECATIONS

/**
 * Provided for backward compatibility, use Chart.helpers.math.log10 instead.
 * @namespace Chart.helpers.log10
 * @deprecated since version 2.9.0
 * @todo remove at version 3
 * @private
 */
helpers_core.log10 = exports$2.log10;

var getRtlAdapter = function(rectX, width) {
	return {
		x: function(x) {
			return rectX + rectX + width - x;
		},
		setWidth: function(w) {
			width = w;
		},
		textAlign: function(align) {
			if (align === 'center') {
				return align;
			}
			return align === 'right' ? 'left' : 'right';
		},
		xPlus: function(x, value) {
			return x - value;
		},
		leftForLtr: function(x, itemWidth) {
			return x - itemWidth;
		},
	};
};

var getLtrAdapter = function() {
	return {
		x: function(x) {
			return x;
		},
		setWidth: function(w) { // eslint-disable-line no-unused-vars
		},
		textAlign: function(align) {
			return align;
		},
		xPlus: function(x, value) {
			return x + value;
		},
		leftForLtr: function(x, _itemWidth) { // eslint-disable-line no-unused-vars
			return x;
		},
	};
};

var getAdapter = function(rtl, rectX, width) {
	return rtl ? getRtlAdapter(rectX, width) : getLtrAdapter();
};

var overrideTextDirection = function(ctx, direction) {
	var style, original;
	if (direction === 'ltr' || direction === 'rtl') {
		style = ctx.canvas.style;
		original = [
			style.getPropertyValue('direction'),
			style.getPropertyPriority('direction'),
		];

		style.setProperty('direction', direction, 'important');
		ctx.prevTextDirection = original;
	}
};

var restoreTextDirection = function(ctx) {
	var original = ctx.prevTextDirection;
	if (original !== undefined) {
		delete ctx.prevTextDirection;
		ctx.canvas.style.setProperty('direction', original[0], original[1]);
	}
};

var helpers_rtl = {
	getRtlAdapter: getAdapter,
	overrideTextDirection: overrideTextDirection,
	restoreTextDirection: restoreTextDirection,
};

var helpers$1 = helpers_core;
var easing = helpers_easing;
var canvas = helpers_canvas;
var options = helpers_options;
var math = helpers_math;
var rtl = helpers_rtl;
helpers$1.easing = easing;
helpers$1.canvas = canvas;
helpers$1.options = options;
helpers$1.math = math;
helpers$1.rtl = rtl;

function interpolate(start, view, model, ease) {
	var keys = Object.keys(model);
	var i, ilen, key, actual, origin, target, type, c0, c1;

	for (i = 0, ilen = keys.length; i < ilen; ++i) {
		key = keys[i];

		target = model[key];

		// if a value is added to the model after pivot() has been called, the view
		// doesn't contain it, so let's initialize the view to the target value.
		if (!view.hasOwnProperty(key)) {
			view[key] = target;
		}

		actual = view[key];

		if (actual === target || key[0] === '_') {
			continue;
		}

		if (!start.hasOwnProperty(key)) {
			start[key] = actual;
		}

		origin = start[key];

		type = typeof target;

		if (type === typeof origin) {
			if (type === 'string') {
				c0 = chartjsColor(origin);
				if (c0.valid) {
					c1 = chartjsColor(target);
					if (c1.valid) {
						view[key] = c1.mix(c0, ease).rgbString();
						continue;
					}
				}
			} else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) {
				view[key] = origin + (target - origin) * ease;
				continue;
			}
		}

		view[key] = target;
	}
}

var Element = function(configuration) {
	helpers$1.extend(this, configuration);
	this.initialize.apply(this, arguments);
};

helpers$1.extend(Element.prototype, {
	_type: undefined,

	initialize: function() {
		this.hidden = false;
	},

	pivot: function() {
		var me = this;
		if (!me._view) {
			me._view = helpers$1.extend({}, me._model);
		}
		me._start = {};
		return me;
	},

	transition: function(ease) {
		var me = this;
		var model = me._model;
		var start = me._start;
		var view = me._view;

		// No animation -> No Transition
		if (!model || ease === 1) {
			me._view = helpers$1.extend({}, model);
			me._start = null;
			return me;
		}

		if (!view) {
			view = me._view = {};
		}

		if (!start) {
			start = me._start = {};
		}

		interpolate(start, view, model, ease);

		return me;
	},

	tooltipPosition: function() {
		return {
			x: this._model.x,
			y: this._model.y
		};
	},

	hasValue: function() {
		return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y);
	}
});

Element.extend = helpers$1.inherits;

var core_element = Element;

var exports$3 = core_element.extend({
	chart: null, // the animation associated chart instance
	currentStep: 0, // the current animation step
	numSteps: 60, // default number of steps
	easing: '', // the easing to use for this animation
	render: null, // render function used by the animation service

	onAnimationProgress: null, // user specified callback to fire on each step of the animation
	onAnimationComplete: null, // user specified callback to fire when the animation finishes
});

var core_animation = exports$3;

// DEPRECATIONS

/**
 * Provided for backward compatibility, use Chart.Animation instead
 * @prop Chart.Animation#animationObject
 * @deprecated since version 2.6.0
 * @todo remove at version 3
 */
Object.defineProperty(exports$3.prototype, 'animationObject', {
	get: function() {
		return this;
	}
});

/**
 * Provided for backward compatibility, use Chart.Animation#chart instead
 * @prop Chart.Animation#chartInstance
 * @deprecated since version 2.6.0
 * @todo remove at version 3
 */
Object.defineProperty(exports$3.prototype, 'chartInstance', {
	get: function() {
		return this.chart;
	},
	set: function(value) {
		this.chart = value;
	}
});

core_defaults._set('global', {
	animation: {
		duration: 1000,
		easing: 'easeOutQuart',
		onProgress: helpers$1.noop,
		onComplete: helpers$1.noop
	}
});

var core_animations = {
	animations: [],
	request: null,

	/**
	 * @param {Chart} chart - The chart to animate.
	 * @param {Chart.Animation} animation - The animation that we will animate.
	 * @param {number} duration - The animation duration in ms.
	 * @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
	 */
	addAnimation: function(chart, animation, duration, lazy) {
		var animations = this.animations;
		var i, ilen;

		animation.chart = chart;
		animation.startTime = Date.now();
		animation.duration = duration;

		if (!lazy) {
			chart.animating = true;
		}

		for (i = 0, ilen = animations.length; i < ilen; ++i) {
			if (animations[i].chart === chart) {
				animations[i] = animation;
				return;
			}
		}

		animations.push(animation);

		// If there are no animations queued, manually kickstart a digest, for lack of a better word
		if (animations.length === 1) {
			this.requestAnimationFrame();
		}
	},

	cancelAnimation: function(chart) {
		var index = helpers$1.findIndex(this.animations, function(animation) {
			return animation.chart === chart;
		});

		if (index !== -1) {
			this.animations.splice(index, 1);
			chart.animating = false;
		}
	},

	requestAnimationFrame: function() {
		var me = this;
		if (me.request === null) {
			// Skip animation frame requests until the active one is executed.
			// This can happen when processing mouse events, e.g. 'mousemove'
			// and 'mouseout' events will trigger multiple renders.
			me.request = helpers$1.requestAnimFrame.call(window, function() {
				me.request = null;
				me.startDigest();
			});
		}
	},

	/**
	 * @private
	 */
	startDigest: function() {
		var me = this;

		me.advance();

		// Do we have more stuff to animate?
		if (me.animations.length > 0) {
			me.requestAnimationFrame();
		}
	},

	/**
	 * @private
	 */
	advance: function() {
		var animations = this.animations;
		var animation, chart, numSteps, nextStep;
		var i = 0;

		// 1 animation per chart, so we are looping charts here
		while (i < animations.length) {
			animation = animations[i];
			chart = animation.chart;
			numSteps = animation.numSteps;

			// Make sure that currentStep starts at 1
			// https://github.com/chartjs/Chart.js/issues/6104
			nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1;
			animation.currentStep = Math.min(nextStep, numSteps);

			helpers$1.callback(animation.render, [chart, animation], chart);
			helpers$1.callback(animation.onAnimationProgress, [animation], chart);

			if (animation.currentStep >= numSteps) {
				helpers$1.callback(animation.onAnimationComplete, [animation], chart);
				chart.animating = false;
				animations.splice(i, 1);
			} else {
				++i;
			}
		}
	}
};

var resolve = helpers$1.options.resolve;

var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];

/**
 * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
 * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
 * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
 */
function listenArrayEvents(array, listener) {
	if (array._chartjs) {
		array._chartjs.listeners.push(listener);
		return;
	}

	Object.defineProperty(array, '_chartjs', {
		configurable: true,
		enumerable: false,
		value: {
			listeners: [listener]
		}
	});

	arrayEvents.forEach(function(key) {
		var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
		var base = array[key];

		Object.defineProperty(array, key, {
			configurable: true,
			enumerable: false,
			value: function() {
				var args = Array.prototype.slice.call(arguments);
				var res = base.apply(this, args);

				helpers$1.each(array._chartjs.listeners, function(object) {
					if (typeof object[method] === 'function') {
						object[method].apply(object, args);
					}
				});

				return res;
			}
		});
	});
}

/**
 * Removes the given array event listener and cleanup extra attached properties (such as
 * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
 */
function unlistenArrayEvents(array, listener) {
	var stub = array._chartjs;
	if (!stub) {
		return;
	}

	var listeners = stub.listeners;
	var index = listeners.indexOf(listener);
	if (index !== -1) {
		listeners.splice(index, 1);
	}

	if (listeners.length > 0) {
		return;
	}

	arrayEvents.forEach(function(key) {
		delete array[key];
	});

	delete array._chartjs;
}

// Base class for all dataset controllers (line, bar, etc)
var DatasetController = function(chart, datasetIndex) {
	this.initialize(chart, datasetIndex);
};

helpers$1.extend(DatasetController.prototype, {

	/**
	 * Element type used to generate a meta dataset (e.g. Chart.element.Line).
	 * @type {Chart.core.element}
	 */
	datasetElementType: null,

	/**
	 * Element type used to generate a meta data (e.g. Chart.element.Point).
	 * @type {Chart.core.element}
	 */
	dataElementType: null,

	/**
	 * Dataset element option keys to be resolved in _resolveDatasetElementOptions.
	 * A derived controller may override this to resolve controller-specific options.
	 * The keys defined here are for backward compatibility for legend styles.
	 * @private
	 */
	_datasetElementOptions: [
		'backgroundColor',
		'borderCapStyle',
		'borderColor',
		'borderDash',
		'borderDashOffset',
		'borderJoinStyle',
		'borderWidth'
	],

	/**
	 * Data element option keys to be resolved in _resolveDataElementOptions.
	 * A derived controller may override this to resolve controller-specific options.
	 * The keys defined here are for backward compatibility for legend styles.
	 * @private
	 */
	_dataElementOptions: [
		'backgroundColor',
		'borderColor',
		'borderWidth',
		'pointStyle'
	],

	initialize: function(chart, datasetIndex) {
		var me = this;
		me.chart = chart;
		me.index = datasetIndex;
		me.linkScales();
		me.addElements();
		me._type = me.getMeta().type;
	},

	updateIndex: function(datasetIndex) {
		this.index = datasetIndex;
	},

	linkScales: function() {
		var me = this;
		var meta = me.getMeta();
		var chart = me.chart;
		var scales = chart.scales;
		var dataset = me.getDataset();
		var scalesOpts = chart.options.scales;

		if (meta.xAxisID === null || !(meta.xAxisID in scales) || dataset.xAxisID) {
			meta.xAxisID = dataset.xAxisID || scalesOpts.xAxes[0].id;
		}
		if (meta.yAxisID === null || !(meta.yAxisID in scales) || dataset.yAxisID) {
			meta.yAxisID = dataset.yAxisID || scalesOpts.yAxes[0].id;
		}
	},

	getDataset: function() {
		return this.chart.data.datasets[this.index];
	},

	getMeta: function() {
		return this.chart.getDatasetMeta(this.index);
	},

	getScaleForId: function(scaleID) {
		return this.chart.scales[scaleID];
	},

	/**
	 * @private
	 */
	_getValueScaleId: function() {
		return this.getMeta().yAxisID;
	},

	/**
	 * @private
	 */
	_getIndexScaleId: function() {
		return this.getMeta().xAxisID;
	},

	/**
	 * @private
	 */
	_getValueScale: function() {
		return this.getScaleForId(this._getValueScaleId());
	},

	/**
	 * @private
	 */
	_getIndexScale: function() {
		return this.getScaleForId(this._getIndexScaleId());
	},

	reset: function() {
		this._update(true);
	},

	/**
	 * @private
	 */
	destroy: function() {
		if (this._data) {
			unlistenArrayEvents(this._data, this);
		}
	},

	createMetaDataset: function() {
		var me = this;
		var type = me.datasetElementType;
		return type && new type({
			_chart: me.chart,
			_datasetIndex: me.index
		});
	},

	createMetaData: function(index) {
		var me = this;
		var type = me.dataElementType;
		return type && new type({
			_chart: me.chart,
			_datasetIndex: me.index,
			_index: index
		});
	},

	addElements: function() {
		var me = this;
		var meta = me.getMeta();
		var data = me.getDataset().data || [];
		var metaData = meta.data;
		var i, ilen;

		for (i = 0, ilen = data.length; i < ilen; ++i) {
			metaData[i] = metaData[i] || me.createMetaData(i);
		}

		meta.dataset = meta.dataset || me.createMetaDataset();
	},

	addElementAndReset: function(index) {
		var element = this.createMetaData(index);
		this.getMeta().data.splice(index, 0, element);
		this.updateElement(element, index, true);
	},

	buildOrUpdateElements: function() {
		var me = this;
		var dataset = me.getDataset();
		var data = dataset.data || (dataset.data = []);

		// In order to correctly handle data addition/deletion animation (an thus simulate
		// real-time charts), we need to monitor these data modifications and synchronize
		// the internal meta data accordingly.
		if (me._data !== data) {
			if (me._data) {
				// This case happens when the user replaced the data array instance.
				unlistenArrayEvents(me._data, me);
			}

			if (data && Object.isExtensible(data)) {
				listenArrayEvents(data, me);
			}
			me._data = data;
		}

		// Re-sync meta data in case the user replaced the data array or if we missed
		// any updates and so make sure that we handle number of datapoints changing.
		me.resyncElements();
	},

	/**
	 * Returns the merged user-supplied and default dataset-level options
	 * @private
	 */
	_configure: function() {
		var me = this;
		me._config = helpers$1.merge(Object.create(null), [
			me.chart.options.datasets[me._type],
			me.getDataset(),
		], {
			merger: function(key, target, source) {
				if (key !== '_meta' && key !== 'data') {
					helpers$1._merger(key, target, source);
				}
			}
		});
	},

	_update: function(reset) {
		var me = this;
		me._configure();
		me._cachedDataOpts = null;
		me.update(reset);
	},

	update: helpers$1.noop,

	transition: function(easingValue) {
		var meta = this.getMeta();
		var elements = meta.data || [];
		var ilen = elements.length;
		var i = 0;

		for (; i < ilen; ++i) {
			elements[i].transition(easingValue);
		}

		if (meta.dataset) {
			meta.dataset.transition(easingValue);
		}
	},

	draw: function() {
		var meta = this.getMeta();
		var elements = meta.data || [];
		var ilen = elements.length;
		var i = 0;

		if (meta.dataset) {
			meta.dataset.draw();
		}

		for (; i < ilen; ++i) {
			elements[i].draw();
		}
	},

	/**
	 * Returns a set of predefined style properties that should be used to represent the dataset
	 * or the data if the index is specified
	 * @param {number} index - data index
	 * @return {IStyleInterface} style object
	 */
	getStyle: function(index) {
		var me = this;
		var meta = me.getMeta();
		var dataset = meta.dataset;
		var style;

		me._configure();
		if (dataset && index === undefined) {
			style = me._resolveDatasetElementOptions(dataset || {});
		} else {
			index = index || 0;
			style = me._resolveDataElementOptions(meta.data[index] || {}, index);
		}

		if (style.fill === false || style.fill === null) {
			style.backgroundColor = style.borderColor;
		}

		return style;
	},

	/**
	 * @private
	 */
	_resolveDatasetElementOptions: function(element, hover) {
		var me = this;
		var chart = me.chart;
		var datasetOpts = me._config;
		var custom = element.custom || {};
		var options = chart.options.elements[me.datasetElementType.prototype._type] || {};
		var elementOptions = me._datasetElementOptions;
		var values = {};
		var i, ilen, key, readKey;

		// Scriptable options
		var context = {
			chart: chart,
			dataset: me.getDataset(),
			datasetIndex: me.index,
			hover: hover
		};

		for (i = 0, ilen = elementOptions.length; i < ilen; ++i) {
			key = elementOptions[i];
			readKey = hover ? 'hover' + key.charAt(0).toUpperCase() + key.slice(1) : key;
			values[key] = resolve([
				custom[readKey],
				datasetOpts[readKey],
				options[readKey]
			], context);
		}

		return values;
	},

	/**
	 * @private
	 */
	_resolveDataElementOptions: function(element, index) {
		var me = this;
		var custom = element && element.custom;
		var cached = me._cachedDataOpts;
		if (cached && !custom) {
			return cached;
		}
		var chart = me.chart;
		var datasetOpts = me._config;
		var options = chart.options.elements[me.dataElementType.prototype._type] || {};
		var elementOptions = me._dataElementOptions;
		var values = {};

		// Scriptable options
		var context = {
			chart: chart,
			dataIndex: index,
			dataset: me.getDataset(),
			datasetIndex: me.index
		};

		// `resolve` sets cacheable to `false` if any option is indexed or scripted
		var info = {cacheable: !custom};

		var keys, i, ilen, key;

		custom = custom || {};

		if (helpers$1.isArray(elementOptions)) {
			for (i = 0, ilen = elementOptions.length; i < ilen; ++i) {
				key = elementOptions[i];
				values[key] = resolve([
					custom[key],
					datasetOpts[key],
					options[key]
				], context, index, info);
			}
		} else {
			keys = Object.keys(elementOptions);
			for (i = 0, ilen = keys.length; i < ilen; ++i) {
				key = keys[i];
				values[key] = resolve([
					custom[key],
					datasetOpts[elementOptions[key]],
					datasetOpts[key],
					options[key]
				], context, index, info);
			}
		}

		if (info.cacheable) {
			me._cachedDataOpts = Object.freeze(values);
		}

		return values;
	},

	removeHoverStyle: function(element) {
		helpers$1.merge(element._model, element.$previousStyle || {});
		delete element.$previousStyle;
	},

	setHoverStyle: function(element) {
		var dataset = this.chart.data.datasets[element._datasetIndex];
		var index = element._index;
		var custom = element.custom || {};
		var model = element._model;
		var getHoverColor = helpers$1.getHoverColor;

		element.$previousStyle = {
			backgroundColor: model.backgroundColor,
			borderColor: model.borderColor,
			borderWidth: model.borderWidth
		};

		model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index);
		model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index);
		model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index);
	},

	/**
	 * @private
	 */
	_removeDatasetHoverStyle: function() {
		var element = this.getMeta().dataset;

		if (element) {
			this.removeHoverStyle(element);
		}
	},

	/**
	 * @private
	 */
	_setDatasetHoverStyle: function() {
		var element = this.getMeta().dataset;
		var prev = {};
		var i, ilen, key, keys, hoverOptions, model;

		if (!element) {
			return;
		}

		model = element._model;
		hoverOptions = this._resolveDatasetElementOptions(element, true);

		keys = Object.keys(hoverOptions);
		for (i = 0, ilen = keys.length; i < ilen; ++i) {
			key = keys[i];
			prev[key] = model[key];
			model[key] = hoverOptions[key];
		}

		element.$previousStyle = prev;
	},

	/**
	 * @private
	 */
	resyncElements: function() {
		var me = this;
		var meta = me.getMeta();
		var data = me.getDataset().data;
		var numMeta = meta.data.length;
		var numData = data.length;

		if (numData < numMeta) {
			meta.data.splice(numData, numMeta - numData);
		} else if (numData > numMeta) {
			me.insertElements(numMeta, numData - numMeta);
		}
	},

	/**
	 * @private
	 */
	insertElements: function(start, count) {
		for (var i = 0; i < count; ++i) {
			this.addElementAndReset(start + i);
		}
	},

	/**
	 * @private
	 */
	onDataPush: function() {
		var count = arguments.length;
		this.insertElements(this.getDataset().data.length - count, count);
	},

	/**
	 * @private
	 */
	onDataPop: function() {
		this.getMeta().data.pop();
	},

	/**
	 * @private
	 */
	onDataShift: function() {
		this.getMeta().data.shift();
	},

	/**
	 * @private
	 */
	onDataSplice: function(start, count) {
		this.getMeta().data.splice(start, count);
		this.insertElements(start, arguments.length - 2);
	},

	/**
	 * @private
	 */
	onDataUnshift: function() {
		this.insertElements(0, arguments.length);
	}
});

DatasetController.extend = helpers$1.inherits;

var core_datasetController = DatasetController;

var TAU = Math.PI * 2;

core_defaults._set('global', {
	elements: {
		arc: {
			backgroundColor: core_defaults.global.defaultColor,
			borderColor: '#fff',
			borderWidth: 2,
			borderAlign: 'center'
		}
	}
});

function clipArc(ctx, arc) {
	var startAngle = arc.startAngle;
	var endAngle = arc.endAngle;
	var pixelMargin = arc.pixelMargin;
	var angleMargin = pixelMargin / arc.outerRadius;
	var x = arc.x;
	var y = arc.y;

	// Draw an inner border by cliping the arc and drawing a double-width border
	// Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders
	ctx.beginPath();
	ctx.arc(x, y, arc.outerRadius, startAngle - angleMargin, endAngle + angleMargin);
	if (arc.innerRadius > pixelMargin) {
		angleMargin = pixelMargin / arc.innerRadius;
		ctx.arc(x, y, arc.innerRadius - pixelMargin, endAngle + angleMargin, startAngle - angleMargin, true);
	} else {
		ctx.arc(x, y, pixelMargin, endAngle + Math.PI / 2, startAngle - Math.PI / 2);
	}
	ctx.closePath();
	ctx.clip();
}

function drawFullCircleBorders(ctx, vm, arc, inner) {
	var endAngle = arc.endAngle;
	var i;

	if (inner) {
		arc.endAngle = arc.startAngle + TAU;
		clipArc(ctx, arc);
		arc.endAngle = endAngle;
		if (arc.endAngle === arc.startAngle && arc.fullCircles) {
			arc.endAngle += TAU;
			arc.fullCircles--;
		}
	}

	ctx.beginPath();
	ctx.arc(arc.x, arc.y, arc.innerRadius, arc.startAngle + TAU, arc.startAngle, true);
	for (i = 0; i < arc.fullCircles; ++i) {
		ctx.stroke();
	}

	ctx.beginPath();
	ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.startAngle + TAU);
	for (i = 0; i < arc.fullCircles; ++i) {
		ctx.stroke();
	}
}

function drawBorder(ctx, vm, arc) {
	var inner = vm.borderAlign === 'inner';

	if (inner) {
		ctx.lineWidth = vm.borderWidth * 2;
		ctx.lineJoin = 'round';
	} else {
		ctx.lineWidth = vm.borderWidth;
		ctx.lineJoin = 'bevel';
	}

	if (arc.fullCircles) {
		drawFullCircleBorders(ctx, vm, arc, inner);
	}

	if (inner) {
		clipArc(ctx, arc);
	}

	ctx.beginPath();
	ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.endAngle);
	ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true);
	ctx.closePath();
	ctx.stroke();
}

var element_arc = core_element.extend({
	_type: 'arc',

	inLabelRange: function(mouseX) {
		var vm = this._view;

		if (vm) {
			return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
		}
		return false;
	},

	inRange: function(chartX, chartY) {
		var vm = this._view;

		if (vm) {
			var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY});
			var angle = pointRelativePosition.angle;
			var distance = pointRelativePosition.distance;

			// Sanitise angle range
			var startAngle = vm.startAngle;
			var endAngle = vm.endAngle;
			while (endAngle < startAngle) {
				endAngle += TAU;
			}
			while (angle > endAngle) {
				angle -= TAU;
			}
			while (angle < startAngle) {
				angle += TAU;
			}

			// Check if within the range of the open/close angle
			var betweenAngles = (angle >= startAngle && angle <= endAngle);
			var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);

			return (betweenAngles && withinRadius);
		}
		return false;
	},

	getCenterPoint: function() {
		var vm = this._view;
		var halfAngle = (vm.startAngle + vm.endAngle) / 2;
		var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
		return {
			x: vm.x + Math.cos(halfAngle) * halfRadius,
			y: vm.y + Math.sin(halfAngle) * halfRadius
		};
	},

	getArea: function() {
		var vm = this._view;
		return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
	},

	tooltipPosition: function() {
		var vm = this._view;
		var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
		var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;

		return {
			x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
			y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
		};
	},

	draw: function() {
		var ctx = this._chart.ctx;
		var vm = this._view;
		var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0;
		var arc = {
			x: vm.x,
			y: vm.y,
			innerRadius: vm.innerRadius,
			outerRadius: Math.max(vm.outerRadius - pixelMargin, 0),
			pixelMargin: pixelMargin,
			startAngle: vm.startAngle,
			endAngle: vm.endAngle,
			fullCircles: Math.floor(vm.circumference / TAU)
		};
		var i;

		ctx.save();

		ctx.fillStyle = vm.backgroundColor;
		ctx.strokeStyle = vm.borderColor;

		if (arc.fullCircles) {
			arc.endAngle = arc.startAngle + TAU;
			ctx.beginPath();
			ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle);
			ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true);
			ctx.closePath();
			for (i = 0; i < arc.fullCircles; ++i) {
				ctx.fill();
			}
			arc.endAngle = arc.startAngle + vm.circumference % TAU;
		}

		ctx.beginPath();
		ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle);
		ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true);
		ctx.closePath();
		ctx.fill();

		if (vm.borderWidth) {
			drawBorder(ctx, vm, arc);
		}

		ctx.restore();
	}
});

var valueOrDefault$1 = helpers$1.valueOrDefault;

var defaultColor = core_defaults.global.defaultColor;

core_defaults._set('global', {
	elements: {
		line: {
			tension: 0.4,
			backgroundColor: defaultColor,
			borderWidth: 3,
			borderColor: defaultColor,
			borderCapStyle: 'butt',
			borderDash: [],
			borderDashOffset: 0.0,
			borderJoinStyle: 'miter',
			capBezierPoints: true,
			fill: true, // do we fill in the area between the line and its base axis
		}
	}
});

var element_line = core_element.extend({
	_type: 'line',

	draw: function() {
		var me = this;
		var vm = me._view;
		var ctx = me._chart.ctx;
		var spanGaps = vm.spanGaps;
		var points = me._children.slice(); // clone array
		var globalDefaults = core_defaults.global;
		var globalOptionLineElements = globalDefaults.elements.line;
		var lastDrawnIndex = -1;
		var closePath = me._loop;
		var index, previous, currentVM;

		if (!points.length) {
			return;
		}

		if (me._loop) {
			for (index = 0; index < points.length; ++index) {
				previous = helpers$1.previousItem(points, index);
				// If the line has an open path, shift the point array
				if (!points[index]._view.skip && previous._view.skip) {
					points = points.slice(index).concat(points.slice(0, index));
					closePath = spanGaps;
					break;
				}
			}
			// If the line has a close path, add the first point again
			if (closePath) {
				points.push(points[0]);
			}
		}

		ctx.save();

		// Stroke Line Options
		ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;

		// IE 9 and 10 do not support line dash
		if (ctx.setLineDash) {
			ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
		}

		ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset);
		ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
		ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth);
		ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;

		// Stroke Line
		ctx.beginPath();

		// First point moves to it's starting position no matter what
		currentVM = points[0]._view;
		if (!currentVM.skip) {
			ctx.moveTo(currentVM.x, currentVM.y);
			lastDrawnIndex = 0;
		}

		for (index = 1; index < points.length; ++index) {
			currentVM = points[index]._view;
			previous = lastDrawnIndex === -1 ? helpers$1.previousItem(points, index) : points[lastDrawnIndex];

			if (!currentVM.skip) {
				if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
					// There was a gap and this is the first point after the gap
					ctx.moveTo(currentVM.x, currentVM.y);
				} else {
					// Line to next point
					helpers$1.canvas.lineTo(ctx, previous._view, currentVM);
				}
				lastDrawnIndex = index;
			}
		}

		if (closePath) {
			ctx.closePath();
		}

		ctx.stroke();
		ctx.restore();
	}
});

var valueOrDefault$2 = helpers$1.valueOrDefault;

var defaultColor$1 = core_defaults.global.defaultColor;

core_defaults._set('global', {
	elements: {
		point: {
			radius: 3,
			pointStyle: 'circle',
			backgroundColor: defaultColor$1,
			borderColor: defaultColor$1,
			borderWidth: 1,
			// Hover
			hitRadius: 1,
			hoverRadius: 4,
			hoverBorderWidth: 1
		}
	}
});

function xRange(mouseX) {
	var vm = this._view;
	return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
}

function yRange(mouseY) {
	var vm = this._view;
	return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
}

var element_point = core_element.extend({
	_type: 'point',

	inRange: function(mouseX, mouseY) {
		var vm = this._view;
		return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
	},

	inLabelRange: xRange,
	inXRange: xRange,
	inYRange: yRange,

	getCenterPoint: function() {
		var vm = this._view;
		return {
			x: vm.x,
			y: vm.y
		};
	},

	getArea: function() {
		return Math.PI * Math.pow(this._view.radius, 2);
	},

	tooltipPosition: function() {
		var vm = this._view;
		return {
			x: vm.x,
			y: vm.y,
			padding: vm.radius + vm.borderWidth
		};
	},

	draw: function(chartArea) {
		var vm = this._view;
		var ctx = this._chart.ctx;
		var pointStyle = vm.pointStyle;
		var rotation = vm.rotation;
		var radius = vm.radius;
		var x = vm.x;
		var y = vm.y;
		var globalDefaults = core_defaults.global;
		var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow

		if (vm.skip) {
			return;
		}

		// Clipping for Points.
		if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) {
			ctx.strokeStyle = vm.borderColor || defaultColor;
			ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth);
			ctx.fillStyle = vm.backgroundColor || defaultColor;
			helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation);
		}
	}
});

var defaultColor$2 = core_defaults.global.defaultColor;

core_defaults._set('global', {
	elements: {
		rectangle: {
			backgroundColor: defaultColor$2,
			borderColor: defaultColor$2,
			borderSkipped: 'bottom',
			borderWidth: 0
		}
	}
});

function isVertical(vm) {
	return vm && vm.width !== undefined;
}

/**
 * Helper function to get the bounds of the bar regardless of the orientation
 * @param bar {Chart.Element.Rectangle} the bar
 * @return {Bounds} bounds of the bar
 * @private
 */
function getBarBounds(vm) {
	var x1, x2, y1, y2, half;

	if (isVertical(vm)) {
		half = vm.width / 2;
		x1 = vm.x - half;
		x2 = vm.x + half;
		y1 = Math.min(vm.y, vm.base);
		y2 = Math.max(vm.y, vm.base);
	} else {
		half = vm.height / 2;
		x1 = Math.min(vm.x, vm.base);
		x2 = Math.max(vm.x, vm.base);
		y1 = vm.y - half;
		y2 = vm.y + half;
	}

	return {
		left: x1,
		top: y1,
		right: x2,
		bottom: y2
	};
}

function swap(orig, v1, v2) {
	return orig === v1 ? v2 : orig === v2 ? v1 : orig;
}

function parseBorderSkipped(vm) {
	var edge = vm.borderSkipped;
	var res = {};

	if (!edge) {
		return res;
	}

	if (vm.horizontal) {
		if (vm.base > vm.x) {
			edge = swap(edge, 'left', 'right');
		}
	} else if (vm.base < vm.y) {
		edge = swap(edge, 'bottom', 'top');
	}

	res[edge] = true;
	return res;
}

function parseBorderWidth(vm, maxW, maxH) {
	var value = vm.borderWidth;
	var skip = parseBorderSkipped(vm);
	var t, r, b, l;

	if (helpers$1.isObject(value)) {
		t = +value.top || 0;
		r = +value.right || 0;
		b = +value.bottom || 0;
		l = +value.left || 0;
	} else {
		t = r = b = l = +value || 0;
	}

	return {
		t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t,
		r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r,
		b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b,
		l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l
	};
}

function boundingRects(vm) {
	var bounds = getBarBounds(vm);
	var width = bounds.right - bounds.left;
	var height = bounds.bottom - bounds.top;
	var border = parseBorderWidth(vm, width / 2, height / 2);

	return {
		outer: {
			x: bounds.left,
			y: bounds.top,
			w: width,
			h: height
		},
		inner: {
			x: bounds.left + border.l,
			y: bounds.top + border.t,
			w: width - border.l - border.r,
			h: height - border.t - border.b
		}
	};
}

function inRange(vm, x, y) {
	var skipX = x === null;
	var skipY = y === null;
	var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm);

	return bounds
		&& (skipX || x >= bounds.left && x <= bounds.right)
		&& (skipY || y >= bounds.top && y <= bounds.bottom);
}

var element_rectangle = core_element.extend({
	_type: 'rectangle',

	draw: function() {
		var ctx = this._chart.ctx;
		var vm = this._view;
		var rects = boundingRects(vm);
		var outer = rects.outer;
		var inner = rects.inner;

		ctx.fillStyle = vm.backgroundColor;
		ctx.fillRect(outer.x, outer.y, outer.w, outer.h);

		if (outer.w === inner.w && outer.h === inner.h) {
			return;
		}

		ctx.save();
		ctx.beginPath();
		ctx.rect(outer.x, outer.y, outer.w, outer.h);
		ctx.clip();
		ctx.fillStyle = vm.borderColor;
		ctx.rect(inner.x, inner.y, inner.w, inner.h);
		ctx.fill('evenodd');
		ctx.restore();
	},

	height: function() {
		var vm = this._view;
		return vm.base - vm.y;
	},

	inRange: function(mouseX, mouseY) {
		return inRange(this._view, mouseX, mouseY);
	},

	inLabelRange: function(mouseX, mouseY) {
		var vm = this._view;
		return isVertical(vm)
			? inRange(vm, mouseX, null)
			: inRange(vm, null, mouseY);
	},

	inXRange: function(mouseX) {
		return inRange(this._view, mouseX, null);
	},

	inYRange: function(mouseY) {
		return inRange(this._view, null, mouseY);
	},

	getCenterPoint: function() {
		var vm = this._view;
		var x, y;
		if (isVertical(vm)) {
			x = vm.x;
			y = (vm.y + vm.base) / 2;
		} else {
			x = (vm.x + vm.base) / 2;
			y = vm.y;
		}

		return {x: x, y: y};
	},

	getArea: function() {
		var vm = this._view;

		return isVertical(vm)
			? vm.width * Math.abs(vm.y - vm.base)
			: vm.height * Math.abs(vm.x - vm.base);
	},

	tooltipPosition: function() {
		var vm = this._view;
		return {
			x: vm.x,
			y: vm.y
		};
	}
});

var elements = {};
var Arc = element_arc;
var Line = element_line;
var Point = element_point;
var Rectangle = element_rectangle;
elements.Arc = Arc;
elements.Line = Line;
elements.Point = Point;
elements.Rectangle = Rectangle;

var deprecated = helpers$1._deprecated;
var valueOrDefault$3 = helpers$1.valueOrDefault;

core_defaults._set('bar', {
	hover: {
		mode: 'label'
	},

	scales: {
		xAxes: [{
			type: 'category',
			offset: true,
			gridLines: {
				offsetGridLines: true
			}
		}],

		yAxes: [{
			type: 'linear'
		}]
	}
});

core_defaults._set('global', {
	datasets: {
		bar: {
			categoryPercentage: 0.8,
			barPercentage: 0.9
		}
	}
});

/**
 * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap.
 * @private
 */
function computeMinSampleSize(scale, pixels) {
	var min = scale._length;
	var prev, curr, i, ilen;

	for (i = 1, ilen = pixels.length; i < ilen; ++i) {
		min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1]));
	}

	for (i = 0, ilen = scale.getTicks().length; i < ilen; ++i) {
		curr = scale.getPixelForTick(i);
		min = i > 0 ? Math.min(min, Math.abs(curr - prev)) : min;
		prev = curr;
	}

	return min;
}

/**
 * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null,
 * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This
 * mode currently always generates bars equally sized (until we introduce scriptable options?).
 * @private
 */
function computeFitCategoryTraits(index, ruler, options) {
	var thickness = options.barThickness;
	var count = ruler.stackCount;
	var curr = ruler.pixels[index];
	var min = helpers$1.isNullOrUndef(thickness)
		? computeMinSampleSize(ruler.scale, ruler.pixels)
		: -1;
	var size, ratio;

	if (helpers$1.isNullOrUndef(thickness)) {
		size = min * options.categoryPercentage;
		ratio = options.barPercentage;
	} else {
		// When bar thickness is enforced, category and bar percentages are ignored.
		// Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%')
		// and deprecate barPercentage since this value is ignored when thickness is absolute.
		size = thickness * count;
		ratio = 1;
	}

	return {
		chunk: size / count,
		ratio: ratio,
		start: curr - (size / 2)
	};
}

/**
 * Computes an "optimal" category that globally arranges bars side by side (no gap when
 * percentage options are 1), based on the previous and following categories. This mode
 * generates bars with different widths when data are not evenly spaced.
 * @private
 */
function computeFlexCategoryTraits(index, ruler, options) {
	var pixels = ruler.pixels;
	var curr = pixels[index];
	var prev = index > 0 ? pixels[index - 1] : null;
	var next = index < pixels.length - 1 ? pixels[index + 1] : null;
	var percent = options.categoryPercentage;
	var start, size;

	if (prev === null) {
		// first data: its size is double based on the next point or,
		// if it's also the last data, we use the scale size.
		prev = curr - (next === null ? ruler.end - ruler.start : next - curr);
	}

	if (next === null) {
		// last data: its size is also double based on the previous point.
		next = curr + curr - prev;
	}

	start = curr - (curr - Math.min(prev, next)) / 2 * percent;
	size = Math.abs(next - prev) / 2 * percent;

	return {
		chunk: size / ruler.stackCount,
		ratio: options.barPercentage,
		start: start
	};
}

var controller_bar = core_datasetController.extend({

	dataElementType: elements.Rectangle,

	/**
	 * @private
	 */
	_dataElementOptions: [
		'backgroundColor',
		'borderColor',
		'borderSkipped',
		'borderWidth',
		'barPercentage',
		'barThickness',
		'categoryPercentage',
		'maxBarThickness',
		'minBarLength'
	],

	initialize: function() {
		var me = this;
		var meta, scaleOpts;

		core_datasetController.prototype.initialize.apply(me, arguments);

		meta = me.getMeta();
		meta.stack = me.getDataset().stack;
		meta.bar = true;

		scaleOpts = me._getIndexScale().options;
		deprecated('bar chart', scaleOpts.barPercentage, 'scales.[x/y]Axes.barPercentage', 'dataset.barPercentage');
		deprecated('bar chart', scaleOpts.barThickness, 'scales.[x/y]Axes.barThickness', 'dataset.barThickness');
		deprecated('bar chart', scaleOpts.categoryPercentage, 'scales.[x/y]Axes.categoryPercentage', 'dataset.categoryPercentage');
		deprecated('bar chart', me._getValueScale().options.minBarLength, 'scales.[x/y]Axes.minBarLength', 'dataset.minBarLength');
		deprecated('bar chart', scaleOpts.maxBarThickness, 'scales.[x/y]Axes.maxBarThickness', 'dataset.maxBarThickness');
	},

	update: function(reset) {
		var me = this;
		var rects = me.getMeta().data;
		var i, ilen;

		me._ruler = me.getRuler();

		for (i = 0, ilen = rects.length; i < ilen; ++i) {
			me.updateElement(rects[i], i, reset);
		}
	},

	updateElement: function(rectangle, index, reset) {
		var me = this;
		var meta = me.getMeta();
		var dataset = me.getDataset();
		var options = me._resolveDataElementOptions(rectangle, index);

		rectangle._xScale = me.getScaleForId(meta.xAxisID);
		rectangle._yScale = me.getScaleForId(meta.yAxisID);
		rectangle._datasetIndex = me.index;
		rectangle._index = index;
		rectangle._model = {
			backgroundColor: options.backgroundColor,
			borderColor: options.borderColor,
			borderSkipped: options.borderSkipped,
			borderWidth: options.borderWidth,
			datasetLabel: dataset.label,
			label: me.chart.data.labels[index]
		};

		if (helpers$1.isArray(dataset.data[index])) {
			rectangle._model.borderSkipped = null;
		}

		me._updateElementGeometry(rectangle, index, reset, options);

		rectangle.pivot();
	},

	/**
	 * @private
	 */
	_updateElementGeometry: function(rectangle, index, reset, options) {
		var me = this;
		var model = rectangle._model;
		var vscale = me._getValueScale();
		var base = vscale.getBasePixel();
		var horizontal = vscale.isHorizontal();
		var ruler = me._ruler || me.getRuler();
		var vpixels = me.calculateBarValuePixels(me.index, index, options);
		var ipixels = me.calculateBarIndexPixels(me.index, index, ruler, options);

		model.horizontal = horizontal;
		model.base = reset ? base : vpixels.base;
		model.x = horizontal ? reset ? base : vpixels.head : ipixels.center;
		model.y = horizontal ? ipixels.center : reset ? base : vpixels.head;
		model.height = horizontal ? ipixels.size : undefined;
		model.width = horizontal ? undefined : ipixels.size;
	},

	/**
	 * Returns the stacks based on groups and bar visibility.
	 * @param {number} [last] - The dataset index
	 * @returns {string[]} The list of stack IDs
	 * @private
	 */
	_getStacks: function(last) {
		var me = this;
		var scale = me._getIndexScale();
		var metasets = scale._getMatchingVisibleMetas(me._type);
		var stacked = scale.options.stacked;
		var ilen = metasets.length;
		var stacks = [];
		var i, meta;

		for (i = 0; i < ilen; ++i) {
			meta = metasets[i];
			// stacked   | meta.stack
			//           | found | not found | undefined
			// false     |   x   |     x     |     x
			// true      |       |     x     |
			// undefined |       |     x     |     x
			if (stacked === false || stacks.indexOf(meta.stack) === -1 ||
				(stacked === undefined && meta.stack === undefined)) {
				stacks.push(meta.stack);
			}
			if (meta.index === last) {
				break;
			}
		}

		return stacks;
	},

	/**
	 * Returns the effective number of stacks based on groups and bar visibility.
	 * @private
	 */
	getStackCount: function() {
		return this._getStacks().length;
	},

	/**
	 * Returns the stack index for the given dataset based on groups and bar visibility.
	 * @param {number} [datasetIndex] - The dataset index
	 * @param {string} [name] - The stack name to find
	 * @returns {number} The stack index
	 * @private
	 */
	getStackIndex: function(datasetIndex, name) {
		var stacks = this._getStacks(datasetIndex);
		var index = (name !== undefined)
			? stacks.indexOf(name)
			: -1; // indexOf returns -1 if element is not present

		return (index === -1)
			? stacks.length - 1
			: index;
	},

	/**
	 * @private
	 */
	getRuler: function() {
		var me = this;
		var scale = me._getIndexScale();
		var pixels = [];
		var i, ilen;

		for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) {
			pixels.push(scale.getPixelForValue(null, i, me.index));
		}

		return {
			pixels: pixels,
			start: scale._startPixel,
			end: scale._endPixel,
			stackCount: me.getStackCount(),
			scale: scale
		};
	},

	/**
	 * Note: pixel values are not clamped to the scale area.
	 * @private
	 */
	calculateBarValuePixels: function(datasetIndex, index, options) {
		var me = this;
		var chart = me.chart;
		var scale = me._getValueScale();
		var isHorizontal = scale.isHorizontal();
		var datasets = chart.data.datasets;
		var metasets = scale._getMatchingVisibleMetas(me._type);
		var value = scale._parseValue(datasets[datasetIndex].data[index]);
		var minBarLength = options.minBarLength;
		var stacked = scale.options.stacked;
		var stack = me.getMeta().stack;
		var start = value.start === undefined ? 0 : value.max >= 0 && value.min >= 0 ? value.min : value.max;
		var length = value.start === undefined ? value.end : value.max >= 0 && value.min >= 0 ? value.max - value.min : value.min - value.max;
		var ilen = metasets.length;
		var i, imeta, ivalue, base, head, size, stackLength;

		if (stacked || (stacked === undefined && stack !== undefined)) {
			for (i = 0; i < ilen; ++i) {
				imeta = metasets[i];

				if (imeta.index === datasetIndex) {
					break;
				}

				if (imeta.stack === stack) {
					stackLength = scale._parseValue(datasets[imeta.index].data[index]);
					ivalue = stackLength.start === undefined ? stackLength.end : stackLength.min >= 0 && stackLength.max >= 0 ? stackLength.max : stackLength.min;

					if ((value.min < 0 && ivalue < 0) || (value.max >= 0 && ivalue > 0)) {
						start += ivalue;
					}
				}
			}
		}

		base = scale.getPixelForValue(start);
		head = scale.getPixelForValue(start + length);
		size = head - base;

		if (minBarLength !== undefined && Math.abs(size) < minBarLength) {
			size = minBarLength;
			if (length >= 0 && !isHorizontal || length < 0 && isHorizontal) {
				head = base - minBarLength;
			} else {
				head = base + minBarLength;
			}
		}

		return {
			size: size,
			base: base,
			head: head,
			center: head + size / 2
		};
	},

	/**
	 * @private
	 */
	calculateBarIndexPixels: function(datasetIndex, index, ruler, options) {
		var me = this;
		var range = options.barThickness === 'flex'
			? computeFlexCategoryTraits(index, ruler, options)
			: computeFitCategoryTraits(index, ruler, options);

		var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack);
		var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
		var size = Math.min(
			valueOrDefault$3(options.maxBarThickness, Infinity),
			range.chunk * range.ratio);

		return {
			base: center - size / 2,
			head: center + size / 2,
			center: center,
			size: size
		};
	},

	draw: function() {
		var me = this;
		var chart = me.chart;
		var scale = me._getValueScale();
		var rects = me.getMeta().data;
		var dataset = me.getDataset();
		var ilen = rects.length;
		var i = 0;

		helpers$1.canvas.clipArea(chart.ctx, chart.chartArea);

		for (; i < ilen; ++i) {
			var val = scale._parseValue(dataset.data[i]);
			if (!isNaN(val.min) && !isNaN(val.max)) {
				rects[i].draw();
			}
		}

		helpers$1.canvas.unclipArea(chart.ctx);
	},

	/**
	 * @private
	 */
	_resolveDataElementOptions: function() {
		var me = this;
		var values = helpers$1.extend({}, core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments));
		var indexOpts = me._getIndexScale().options;
		var valueOpts = me._getValueScale().options;

		values.barPercentage = valueOrDefault$3(indexOpts.barPercentage, values.barPercentage);
		values.barThickness = valueOrDefault$3(indexOpts.barThickness, values.barThickness);
		values.categoryPercentage = valueOrDefault$3(indexOpts.categoryPercentage, values.categoryPercentage);
		values.maxBarThickness = valueOrDefault$3(indexOpts.maxBarThickness, values.maxBarThickness);
		values.minBarLength = valueOrDefault$3(valueOpts.minBarLength, values.minBarLength);

		return values;
	}

});

var valueOrDefault$4 = helpers$1.valueOrDefault;
var resolve$1 = helpers$1.options.resolve;

core_defaults._set('bubble', {
	hover: {
		mode: 'single'
	},

	scales: {
		xAxes: [{
			type: 'linear', // bubble should probably use a linear scale by default
			position: 'bottom',
			id: 'x-axis-0' // need an ID so datasets can reference the scale
		}],
		yAxes: [{
			type: 'linear',
			position: 'left',
			id: 'y-axis-0'
		}]
	},

	tooltips: {
		callbacks: {
			title: function() {
				// Title doesn't make sense for scatter since we format the data as a point
				return '';
			},
			label: function(item, data) {
				var datasetLabel = data.datasets[item.datasetIndex].label || '';
				var dataPoint = data.datasets[item.datasetIndex].data[item.index];
				return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')';
			}
		}
	}
});

var controller_bubble = core_datasetController.extend({
	/**
	 * @protected
	 */
	dataElementType: elements.Point,

	/**
	 * @private
	 */
	_dataElementOptions: [
		'backgroundColor',
		'borderColor',
		'borderWidth',
		'hoverBackgroundColor',
		'hoverBorderColor',
		'hoverBorderWidth',
		'hoverRadius',
		'hitRadius',
		'pointStyle',
		'rotation'
	],

	/**
	 * @protected
	 */
	update: function(reset) {
		var me = this;
		var meta = me.getMeta();
		var points = meta.data;

		// Update Points
		helpers$1.each(points, function(point, index) {
			me.updateElement(point, index, reset);
		});
	},

	/**
	 * @protected
	 */
	updateElement: function(point, index, reset) {
		var me = this;
		var meta = me.getMeta();
		var custom = point.custom || {};
		var xScale = me.getScaleForId(meta.xAxisID);
		var yScale = me.getScaleForId(meta.yAxisID);
		var options = me._resolveDataElementOptions(point, index);
		var data = me.getDataset().data[index];
		var dsIndex = me.index;

		var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex);
		var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex);

		point._xScale = xScale;
		point._yScale = yScale;
		point._options = options;
		point._datasetIndex = dsIndex;
		point._index = index;
		point._model = {
			backgroundColor: options.backgroundColor,
			borderColor: options.borderColor,
			borderWidth: options.borderWidth,
			hitRadius: options.hitRadius,
			pointStyle: options.pointStyle,
			rotation: options.rotation,
			radius: reset ? 0 : options.radius,
			skip: custom.skip || isNaN(x) || isNaN(y),
			x: x,
			y: y,
		};

		point.pivot();
	},

	/**
	 * @protected
	 */
	setHoverStyle: function(point) {
		var model = point._model;
		var options = point._options;
		var getHoverColor = helpers$1.getHoverColor;

		point.$previousStyle = {
			backgroundColor: model.backgroundColor,
			borderColor: model.borderColor,
			borderWidth: model.borderWidth,
			radius: model.radius
		};

		model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
		model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor));
		model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth);
		model.radius = options.radius + options.hoverRadius;
	},

	/**
	 * @private
	 */
	_resolveDataElementOptions: function(point, index) {
		var me = this;
		var chart = me.chart;
		var dataset = me.getDataset();
		var custom = point.custom || {};
		var data = dataset.data[index] || {};
		var values = core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments);

		// Scriptable options
		var context = {
			chart: chart,
			dataIndex: index,
			dataset: dataset,
			datasetIndex: me.index
		};

		// In case values were cached (and thus frozen), we need to clone the values
		if (me._cachedDataOpts === values) {
			values = helpers$1.extend({}, values);
		}

		// Custom radius resolution
		values.radius = resolve$1([
			custom.radius,
			data.r,
			me._config.radius,
			chart.options.elements.point.radius
		], context, index);

		return values;
	}
});

var valueOrDefault$5 = helpers$1.valueOrDefault;

var PI$1 = Math.PI;
var DOUBLE_PI$1 = PI$1 * 2;
var HALF_PI$1 = PI$1 / 2;

core_defaults._set('doughnut', {
	animation: {
		// Boolean - Whether we animate the rotation of the Doughnut
		animateRotate: true,
		// Boolean - Whether we animate scaling the Doughnut from the centre
		animateScale: false
	},
	hover: {
		mode: 'single'
	},
	legendCallback: function(chart) {
		var list = document.createElement('ul');
		var data = chart.data;
		var datasets = data.datasets;
		var labels = data.labels;
		var i, ilen, listItem, listItemSpan;

		list.setAttribute('class', chart.id + '-legend');
		if (datasets.length) {
			for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) {
				listItem = list.appendChild(document.createElement('li'));
				listItemSpan = listItem.appendChild(document.createElement('span'));
				listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i];
				if (labels[i]) {
					listItem.appendChild(document.createTextNode(labels[i]));
				}
			}
		}

		return list.outerHTML;
	},
	legend: {
		labels: {
			generateLabels: function(chart) {
				var data = chart.data;
				if (data.labels.length && data.datasets.length) {
					return data.labels.map(function(label, i) {
						var meta = chart.getDatasetMeta(0);
						var style = meta.controller.getStyle(i);

						return {
							text: label,
							fillStyle: style.backgroundColor,
							strokeStyle: style.borderColor,
							lineWidth: style.borderWidth,
							hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden,

							// Extra data used for toggling the correct item
							index: i
						};
					});
				}
				return [];
			}
		},

		onClick: function(e, legendItem) {
			var index = legendItem.index;
			var chart = this.chart;
			var i, ilen, meta;

			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
				meta = chart.getDatasetMeta(i);
				// toggle visibility of index if exists
				if (meta.data[index]) {
					meta.data[index].hidden = !meta.data[index].hidden;
				}
			}

			chart.update();
		}
	},

	// The percentage of the chart that we cut out of the middle.
	cutoutPercentage: 50,

	// The rotation of the chart, where the first data arc begins.
	rotation: -HALF_PI$1,

	// The total circumference of the chart.
	circumference: DOUBLE_PI$1,

	// Need to override these to give a nice default
	tooltips: {
		callbacks: {
			title: function() {
				return '';
			},
			label: function(tooltipItem, data) {
				var dataLabel = data.labels[tooltipItem.index];
				var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];

				if (helpers$1.isArray(dataLabel)) {
					// show value on first line of multiline label
					// need to clone because we are changing the value
					dataLabel = dataLabel.slice();
					dataLabel[0] += value;
				} else {
					dataLabel += value;
				}

				return dataLabel;
			}
		}
	}
});

var controller_doughnut = core_datasetController.extend({

	dataElementType: elements.Arc,

	linkScales: helpers$1.noop,

	/**
	 * @private
	 */
	_dataElementOptions: [
		'backgroundColor',
		'borderColor',
		'borderWidth',
		'borderAlign',
		'hoverBackgroundColor',
		'hoverBorderColor',
		'hoverBorderWidth',
	],

	// Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
	getRingIndex: function(datasetIndex) {
		var ringIndex = 0;

		for (var j = 0; j < datasetIndex; ++j) {
			if (this.chart.isDatasetVisible(j)) {
				++ringIndex;
			}
		}

		return ringIndex;
	},

	update: function(reset) {
		var me = this;
		var chart = me.chart;
		var chartArea = chart.chartArea;
		var opts = chart.options;
		var ratioX = 1;
		var ratioY = 1;
		var offsetX = 0;
		var offsetY = 0;
		var meta = me.getMeta();
		var arcs = meta.data;
		var cutout = opts.cutoutPercentage / 100 || 0;
		var circumference = opts.circumference;
		var chartWeight = me._getRingWeight(me.index);
		var maxWidth, maxHeight, i, ilen;

		// If the chart's circumference isn't a full circle, calculate size as a ratio of the width/height of the arc
		if (circumference < DOUBLE_PI$1) {
			var startAngle = opts.rotation % DOUBLE_PI$1;
			startAngle += startAngle >= PI$1 ? -DOUBLE_PI$1 : startAngle < -PI$1 ? DOUBLE_PI$1 : 0;
			var endAngle = startAngle + circumference;
			var startX = Math.cos(startAngle);
			var startY = Math.sin(startAngle);
			var endX = Math.cos(endAngle);
			var endY = Math.sin(endAngle);
			var contains0 = (startAngle <= 0 && endAngle >= 0) || endAngle >= DOUBLE_PI$1;
			var contains90 = (startAngle <= HALF_PI$1 && endAngle >= HALF_PI$1) || endAngle >= DOUBLE_PI$1 + HALF_PI$1;
			var contains180 = startAngle === -PI$1 || endAngle >= PI$1;
			var contains270 = (startAngle <= -HALF_PI$1 && endAngle >= -HALF_PI$1) || endAngle >= PI$1 + HALF_PI$1;
			var minX = contains180 ? -1 : Math.min(startX, startX * cutout, endX, endX * cutout);
			var minY = contains270 ? -1 : Math.min(startY, startY * cutout, endY, endY * cutout);
			var maxX = contains0 ? 1 : Math.max(startX, startX * cutout, endX, endX * cutout);
			var maxY = contains90 ? 1 : Math.max(startY, startY * cutout, endY, endY * cutout);
			ratioX = (maxX - minX) / 2;
			ratioY = (maxY - minY) / 2;
			offsetX = -(maxX + minX) / 2;
			offsetY = -(maxY + minY) / 2;
		}

		for (i = 0, ilen = arcs.length; i < ilen; ++i) {
			arcs[i]._options = me._resolveDataElementOptions(arcs[i], i);
		}

		chart.borderWidth = me.getMaxBorderWidth();
		maxWidth = (chartArea.right - chartArea.left - chart.borderWidth) / ratioX;
		maxHeight = (chartArea.bottom - chartArea.top - chart.borderWidth) / ratioY;
		chart.outerRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0);
		chart.innerRadius = Math.max(chart.outerRadius * cutout, 0);
		chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1);
		chart.offsetX = offsetX * chart.outerRadius;
		chart.offsetY = offsetY * chart.outerRadius;

		meta.total = me.calculateTotal();

		me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index);
		me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0);

		for (i = 0, ilen = arcs.length; i < ilen; ++i) {
			me.updateElement(arcs[i], i, reset);
		}
	},

	updateElement: function(arc, index, reset) {
		var me = this;
		var chart = me.chart;
		var chartArea = chart.chartArea;
		var opts = chart.options;
		var animationOpts = opts.animation;
		var centerX = (chartArea.left + chartArea.right) / 2;
		var centerY = (chartArea.top + chartArea.bottom) / 2;
		var startAngle = opts.rotation; // non reset case handled later
		var endAngle = opts.rotation; // non reset case handled later
		var dataset = me.getDataset();
		var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / DOUBLE_PI$1);
		var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius;
		var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius;
		var options = arc._options || {};

		helpers$1.extend(arc, {
			// Utility
			_datasetIndex: me.index,
			_index: index,

			// Desired view properties
			_model: {
				backgroundColor: options.backgroundColor,
				borderColor: options.borderColor,
				borderWidth: options.borderWidth,
				borderAlign: options.borderAlign,
				x: centerX + chart.offsetX,
				y: centerY + chart.offsetY,
				startAngle: startAngle,
				endAngle: endAngle,
				circumference: circumference,
				outerRadius: outerRadius,
				innerRadius: innerRadius,
				label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
			}
		});

		var model = arc._model;

		// Set correct angles if not resetting
		if (!reset || !animationOpts.animateRotate) {
			if (index === 0) {
				model.startAngle = opts.rotation;
			} else {
				model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
			}

			model.endAngle = model.startAngle + model.circumference;
		}

		arc.pivot();
	},

	calculateTotal: function() {
		var dataset = this.getDataset();
		var meta = this.getMeta();
		var total = 0;
		var value;

		helpers$1.each(meta.data, function(element, index) {
			value = dataset.data[index];
			if (!isNaN(value) && !element.hidden) {
				total += Math.abs(value);
			}
		});

		/* if (total === 0) {
			total = NaN;
		}*/

		return total;
	},

	calculateCircumference: function(value) {
		var total = this.getMeta().total;
		if (total > 0 && !isNaN(value)) {
			return DOUBLE_PI$1 * (Math.abs(value) / total);
		}
		return 0;
	},

	// gets the max border or hover width to properly scale pie charts
	getMaxBorderWidth: function(arcs) {
		var me = this;
		var max = 0;
		var chart = me.chart;
		var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth;

		if (!arcs) {
			// Find the outmost visible dataset
			for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
				if (chart.isDatasetVisible(i)) {
					meta = chart.getDatasetMeta(i);
					arcs = meta.data;
					if (i !== me.index) {
						controller = meta.controller;
					}
					break;
				}
			}
		}

		if (!arcs) {
			return 0;
		}

		for (i = 0, ilen = arcs.length; i < ilen; ++i) {
			arc = arcs[i];
			if (controller) {
				controller._configure();
				options = controller._resolveDataElementOptions(arc, i);
			} else {
				options = arc._options;
			}
			if (options.borderAlign !== 'inner') {
				borderWidth = options.borderWidth;
				hoverWidth = options.hoverBorderWidth;

				max = borderWidth > max ? borderWidth : max;
				max = hoverWidth > max ? hoverWidth : max;
			}
		}
		return max;
	},

	/**
	 * @protected
	 */
	setHoverStyle: function(arc) {
		var model = arc._model;
		var options = arc._options;
		var getHoverColor = helpers$1.getHoverColor;

		arc.$previousStyle = {
			backgroundColor: model.backgroundColor,
			borderColor: model.borderColor,
			borderWidth: model.borderWidth,
		};

		model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
		model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor));
		model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth);
	},

	/**
	 * Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly
	 * @private
	 */
	_getRingWeightOffset: function(datasetIndex) {
		var ringWeightOffset = 0;

		for (var i = 0; i < datasetIndex; ++i) {
			if (this.chart.isDatasetVisible(i)) {
				ringWeightOffset += this._getRingWeight(i);
			}
		}

		return ringWeightOffset;
	},

	/**
	 * @private
	 */
	_getRingWeight: function(dataSetIndex) {
		return Math.max(valueOrDefault$5(this.chart.data.datasets[dataSetIndex].weight, 1), 0);
	},

	/**
	 * Returns the sum of all visibile data set weights.  This value can be 0.
	 * @private
	 */
	_getVisibleDatasetWeightTotal: function() {
		return this._getRingWeightOffset(this.chart.data.datasets.length);
	}
});

core_defaults._set('horizontalBar', {
	hover: {
		mode: 'index',
		axis: 'y'
	},

	scales: {
		xAxes: [{
			type: 'linear',
			position: 'bottom'
		}],

		yAxes: [{
			type: 'category',
			position: 'left',
			offset: true,
			gridLines: {
				offsetGridLines: true
			}
		}]
	},

	elements: {
		rectangle: {
			borderSkipped: 'left'
		}
	},

	tooltips: {
		mode: 'index',
		axis: 'y'
	}
});

core_defaults._set('global', {
	datasets: {
		horizontalBar: {
			categoryPercentage: 0.8,
			barPercentage: 0.9
		}
	}
});

var controller_horizontalBar = controller_bar.extend({
	/**
	 * @private
	 */
	_getValueScaleId: function() {
		return this.getMeta().xAxisID;
	},

	/**
	 * @private
	 */
	_getIndexScaleId: function() {
		return this.getMeta().yAxisID;
	}
});

var valueOrDefault$6 = helpers$1.valueOrDefault;
var resolve$2 = helpers$1.options.resolve;
var isPointInArea = helpers$1.canvas._isPointInArea;

core_defaults._set('line', {
	showLines: true,
	spanGaps: false,

	hover: {
		mode: 'label'
	},

	scales: {
		xAxes: [{
			type: 'category',
			id: 'x-axis-0'
		}],
		yAxes: [{
			type: 'linear',
			id: 'y-axis-0'
		}]
	}
});

function scaleClip(scale, halfBorderWidth) {
	var tickOpts = scale && scale.options.ticks || {};
	var reverse = tickOpts.reverse;
	var min = tickOpts.min === undefined ? halfBorderWidth : 0;
	var max = tickOpts.max === undefined ? halfBorderWidth : 0;
	return {
		start: reverse ? max : min,
		end: reverse ? min : max
	};
}

function defaultClip(xScale, yScale, borderWidth) {
	var halfBorderWidth = borderWidth / 2;
	var x = scaleClip(xScale, halfBorderWidth);
	var y = scaleClip(yScale, halfBorderWidth);

	return {
		top: y.end,
		right: x.end,
		bottom: y.start,
		left: x.start
	};
}

function toClip(value) {
	var t, r, b, l;

	if (helpers$1.isObject(value)) {
		t = value.top;
		r = value.right;
		b = value.bottom;
		l = value.left;
	} else {
		t = r = b = l = value;
	}

	return {
		top: t,
		right: r,
		bottom: b,
		left: l
	};
}


var controller_line = core_datasetController.extend({

	datasetElementType: elements.Line,

	dataElementType: elements.Point,

	/**
	 * @private
	 */
	_datasetElementOptions: [
		'backgroundColor',
		'borderCapStyle',
		'borderColor',
		'borderDash',
		'borderDashOffset',
		'borderJoinStyle',
		'borderWidth',
		'cubicInterpolationMode',
		'fill'
	],

	/**
	 * @private
	 */
	_dataElementOptions: {
		backgroundColor: 'pointBackgroundColor',
		borderColor: 'pointBorderColor',
		borderWidth: 'pointBorderWidth',
		hitRadius: 'pointHitRadius',
		hoverBackgroundColor: 'pointHoverBackgroundColor',
		hoverBorderColor: 'pointHoverBorderColor',
		hoverBorderWidth: 'pointHoverBorderWidth',
		hoverRadius: 'pointHoverRadius',
		pointStyle: 'pointStyle',
		radius: 'pointRadius',
		rotation: 'pointRotation'
	},

	update: function(reset) {
		var me = this;
		var meta = me.getMeta();
		var line = meta.dataset;
		var points = meta.data || [];
		var options = me.chart.options;
		var config = me._config;
		var showLine = me._showLine = valueOrDefault$6(config.showLine, options.showLines);
		var i, ilen;

		me._xScale = me.getScaleForId(meta.xAxisID);
		me._yScale = me.getScaleForId(meta.yAxisID);

		// Update Line
		if (showLine) {
			// Compatibility: If the properties are defined with only the old name, use those values
			if (config.tension !== undefined && config.lineTension === undefined) {
				config.lineTension = config.tension;
			}

			// Utility
			line._scale = me._yScale;
			line._datasetIndex = me.index;
			// Data
			line._children = points;
			// Model
			line._model = me._resolveDatasetElementOptions(line);

			line.pivot();
		}

		// Update Points
		for (i = 0, ilen = points.length; i < ilen; ++i) {
			me.updateElement(points[i], i, reset);
		}

		if (showLine && line._model.tension !== 0) {
			me.updateBezierControlPoints();
		}

		// Now pivot the point for animation
		for (i = 0, ilen = points.length; i < ilen; ++i) {
			points[i].pivot();
		}
	},

	updateElement: function(point, index, reset) {
		var me = this;
		var meta = me.getMeta();
		var custom = point.custom || {};
		var dataset = me.getDataset();
		var datasetIndex = me.index;
		var value = dataset.data[index];
		var xScale = me._xScale;
		var yScale = me._yScale;
		var lineModel = meta.dataset._model;
		var x, y;

		var options = me._resolveDataElementOptions(point, index);

		x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex);
		y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);

		// Utility
		point._xScale = xScale;
		point._yScale = yScale;
		point._options = options;
		point._datasetIndex = datasetIndex;
		point._index = index;

		// Desired view properties
		point._model = {
			x: x,
			y: y,
			skip: custom.skip || isNaN(x) || isNaN(y),
			// Appearance
			radius: options.radius,
			pointStyle: options.pointStyle,
			rotation: options.rotation,
			backgroundColor: options.backgroundColor,
			borderColor: options.borderColor,
			borderWidth: options.borderWidth,
			tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0),
			steppedLine: lineModel ? lineModel.steppedLine : false,
			// Tooltip
			hitRadius: options.hitRadius
		};
	},

	/**
	 * @private
	 */
	_resolveDatasetElementOptions: function(element) {
		var me = this;
		var config = me._config;
		var custom = element.custom || {};
		var options = me.chart.options;
		var lineOptions = options.elements.line;
		var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments);

		// The default behavior of lines is to break at null values, according
		// to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
		// This option gives lines the ability to span gaps
		values.spanGaps = valueOrDefault$6(config.spanGaps, options.spanGaps);
		values.tension = valueOrDefault$6(config.lineTension, lineOptions.tension);
		values.steppedLine = resolve$2([custom.steppedLine, config.steppedLine, lineOptions.stepped]);
		values.clip = toClip(valueOrDefault$6(config.clip, defaultClip(me._xScale, me._yScale, values.borderWidth)));

		return values;
	},

	calculatePointY: function(value, index, datasetIndex) {
		var me = this;
		var chart = me.chart;
		var yScale = me._yScale;
		var sumPos = 0;
		var sumNeg = 0;
		var i, ds, dsMeta, stackedRightValue, rightValue, metasets, ilen;

		if (yScale.options.stacked) {
			rightValue = +yScale.getRightValue(value);
			metasets = chart._getSortedVisibleDatasetMetas();
			ilen = metasets.length;

			for (i = 0; i < ilen; ++i) {
				dsMeta = metasets[i];
				if (dsMeta.index === datasetIndex) {
					break;
				}

				ds = chart.data.datasets[dsMeta.index];
				if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id) {
					stackedRightValue = +yScale.getRightValue(ds.data[index]);
					if (stackedRightValue < 0) {
						sumNeg += stackedRightValue || 0;
					} else {
						sumPos += stackedRightValue || 0;
					}
				}
			}

			if (rightValue < 0) {
				return yScale.getPixelForValue(sumNeg + rightValue);
			}
			return yScale.getPixelForValue(sumPos + rightValue);
		}
		return yScale.getPixelForValue(value);
	},

	updateBezierControlPoints: function() {
		var me = this;
		var chart = me.chart;
		var meta = me.getMeta();
		var lineModel = meta.dataset._model;
		var area = chart.chartArea;
		var points = meta.data || [];
		var i, ilen, model, controlPoints;

		// Only consider points that are drawn in case the spanGaps option is used
		if (lineModel.spanGaps) {
			points = points.filter(function(pt) {
				return !pt._model.skip;
			});
		}

		function capControlPoint(pt, min, max) {
			return Math.max(Math.min(pt, max), min);
		}

		if (lineModel.cubicInterpolationMode === 'monotone') {
			helpers$1.splineCurveMonotone(points);
		} else {
			for (i = 0, ilen = points.length; i < ilen; ++i) {
				model = points[i]._model;
				controlPoints = helpers$1.splineCurve(
					helpers$1.previousItem(points, i)._model,
					model,
					helpers$1.nextItem(points, i)._model,
					lineModel.tension
				);
				model.controlPointPreviousX = controlPoints.previous.x;
				model.controlPointPreviousY = controlPoints.previous.y;
				model.controlPointNextX = controlPoints.next.x;
				model.controlPointNextY = controlPoints.next.y;
			}
		}

		if (chart.options.elements.line.capBezierPoints) {
			for (i = 0, ilen = points.length; i < ilen; ++i) {
				model = points[i]._model;
				if (isPointInArea(model, area)) {
					if (i > 0 && isPointInArea(points[i - 1]._model, area)) {
						model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
						model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
					}
					if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) {
						model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
						model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
					}
				}
			}
		}
	},

	draw: function() {
		var me = this;
		var chart = me.chart;
		var meta = me.getMeta();
		var points = meta.data || [];
		var area = chart.chartArea;
		var canvas = chart.canvas;
		var i = 0;
		var ilen = points.length;
		var clip;

		if (me._showLine) {
			clip = meta.dataset._model.clip;

			helpers$1.canvas.clipArea(chart.ctx, {
				left: clip.left === false ? 0 : area.left - clip.left,
				right: clip.right === false ? canvas.width : area.right + clip.right,
				top: clip.top === false ? 0 : area.top - clip.top,
				bottom: clip.bottom === false ? canvas.height : area.bottom + clip.bottom
			});

			meta.dataset.draw();

			helpers$1.canvas.unclipArea(chart.ctx);
		}

		// Draw the points
		for (; i < ilen; ++i) {
			points[i].draw(area);
		}
	},

	/**
	 * @protected
	 */
	setHoverStyle: function(point) {
		var model = point._model;
		var options = point._options;
		var getHoverColor = helpers$1.getHoverColor;

		point.$previousStyle = {
			backgroundColor: model.backgroundColor,
			borderColor: model.borderColor,
			borderWidth: model.borderWidth,
			radius: model.radius
		};

		model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
		model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor));
		model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth);
		model.radius = valueOrDefault$6(options.hoverRadius, options.radius);
	},
});

var resolve$3 = helpers$1.options.resolve;

core_defaults._set('polarArea', {
	scale: {
		type: 'radialLinear',
		angleLines: {
			display: false
		},
		gridLines: {
			circular: true
		},
		pointLabels: {
			display: false
		},
		ticks: {
			beginAtZero: true
		}
	},

	// Boolean - Whether to animate the rotation of the chart
	animation: {
		animateRotate: true,
		animateScale: true
	},

	startAngle: -0.5 * Math.PI,
	legendCallback: function(chart) {
		var list = document.createElement('ul');
		var data = chart.data;
		var datasets = data.datasets;
		var labels = data.labels;
		var i, ilen, listItem, listItemSpan;

		list.setAttribute('class', chart.id + '-legend');
		if (datasets.length) {
			for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) {
				listItem = list.appendChild(document.createElement('li'));
				listItemSpan = listItem.appendChild(document.createElement('span'));
				listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i];
				if (labels[i]) {
					listItem.appendChild(document.createTextNode(labels[i]));
				}
			}
		}

		return list.outerHTML;
	},
	legend: {
		labels: {
			generateLabels: function(chart) {
				var data = chart.data;
				if (data.labels.length && data.datasets.length) {
					return data.labels.map(function(label, i) {
						var meta = chart.getDatasetMeta(0);
						var style = meta.controller.getStyle(i);

						return {
							text: label,
							fillStyle: style.backgroundColor,
							strokeStyle: style.borderColor,
							lineWidth: style.borderWidth,
							hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden,

							// Extra data used for toggling the correct item
							index: i
						};
					});
				}
				return [];
			}
		},

		onClick: function(e, legendItem) {
			var index = legendItem.index;
			var chart = this.chart;
			var i, ilen, meta;

			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
				meta = chart.getDatasetMeta(i);
				meta.data[index].hidden = !meta.data[index].hidden;
			}

			chart.update();
		}
	},

	// Need to override these to give a nice default
	tooltips: {
		callbacks: {
			title: function() {
				return '';
			},
			label: function(item, data) {
				return data.labels[item.index] + ': ' + item.yLabel;
			}
		}
	}
});

var controller_polarArea = core_datasetController.extend({

	dataElementType: elements.Arc,

	linkScales: helpers$1.noop,

	/**
	 * @private
	 */
	_dataElementOptions: [
		'backgroundColor',
		'borderColor',
		'borderWidth',
		'borderAlign',
		'hoverBackgroundColor',
		'hoverBorderColor',
		'hoverBorderWidth',
	],

	/**
	 * @private
	 */
	_getIndexScaleId: function() {
		return this.chart.scale.id;
	},

	/**
	 * @private
	 */
	_getValueScaleId: function() {
		return this.chart.scale.id;
	},

	update: function(reset) {
		var me = this;
		var dataset = me.getDataset();
		var meta = me.getMeta();
		var start = me.chart.options.startAngle || 0;
		var starts = me._starts = [];
		var angles = me._angles = [];
		var arcs = meta.data;
		var i, ilen, angle;

		me._updateRadius();

		meta.count = me.countVisibleElements();

		for (i = 0, ilen = dataset.data.length; i < ilen; i++) {
			starts[i] = start;
			angle = me._computeAngle(i);
			angles[i] = angle;
			start += angle;
		}

		for (i = 0, ilen = arcs.length; i < ilen; ++i) {
			arcs[i]._options = me._resolveDataElementOptions(arcs[i], i);
			me.updateElement(arcs[i], i, reset);
		}
	},

	/**
	 * @private
	 */
	_updateRadius: function() {
		var me = this;
		var chart = me.chart;
		var chartArea = chart.chartArea;
		var opts = chart.options;
		var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);

		chart.outerRadius = Math.max(minSize / 2, 0);
		chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
		chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();

		me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
		me.innerRadius = me.outerRadius - chart.radiusLength;
	},

	updateElement: function(arc, index, reset) {
		var me = this;
		var chart = me.chart;
		var dataset = me.getDataset();
		var opts = chart.options;
		var animationOpts = opts.animation;
		var scale = chart.scale;
		var labels = chart.data.labels;

		var centerX = scale.xCenter;
		var centerY = scale.yCenter;

		// var negHalfPI = -0.5 * Math.PI;
		var datasetStartAngle = opts.startAngle;
		var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
		var startAngle = me._starts[index];
		var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]);

		var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
		var options = arc._options || {};

		helpers$1.extend(arc, {
			// Utility
			_datasetIndex: me.index,
			_index: index,
			_scale: scale,

			// Desired view properties
			_model: {
				backgroundColor: options.backgroundColor,
				borderColor: options.borderColor,
				borderWidth: options.borderWidth,
				borderAlign: options.borderAlign,
				x: centerX,
				y: centerY,
				innerRadius: 0,
				outerRadius: reset ? resetRadius : distance,
				startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
				endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
				label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index])
			}
		});

		arc.pivot();
	},

	countVisibleElements: function() {
		var dataset = this.getDataset();
		var meta = this.getMeta();
		var count = 0;

		helpers$1.each(meta.data, function(element, index) {
			if (!isNaN(dataset.data[index]) && !element.hidden) {
				count++;
			}
		});

		return count;
	},

	/**
	 * @protected
	 */
	setHoverStyle: function(arc) {
		var model = arc._model;
		var options = arc._options;
		var getHoverColor = helpers$1.getHoverColor;
		var valueOrDefault = helpers$1.valueOrDefault;

		arc.$previousStyle = {
			backgroundColor: model.backgroundColor,
			borderColor: model.borderColor,
			borderWidth: model.borderWidth,
		};

		model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
		model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor));
		model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth);
	},

	/**
	 * @private
	 */
	_computeAngle: function(index) {
		var me = this;
		var count = this.getMeta().count;
		var dataset = me.getDataset();
		var meta = me.getMeta();

		if (isNaN(dataset.data[index]) || meta.data[index].hidden) {
			return 0;
		}

		// Scriptable options
		var context = {
			chart: me.chart,
			dataIndex: index,
			dataset: dataset,
			datasetIndex: me.index
		};

		return resolve$3([
			me.chart.options.elements.arc.angle,
			(2 * Math.PI) / count
		], context, index);
	}
});

core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut));
core_defaults._set('pie', {
	cutoutPercentage: 0
});

// Pie charts are Doughnut chart with different defaults
var controller_pie = controller_doughnut;

var valueOrDefault$7 = helpers$1.valueOrDefault;

core_defaults._set('radar', {
	spanGaps: false,
	scale: {
		type: 'radialLinear'
	},
	elements: {
		line: {
			fill: 'start',
			tension: 0 // no bezier in radar
		}
	}
});

var controller_radar = core_datasetController.extend({
	datasetElementType: elements.Line,

	dataElementType: elements.Point,

	linkScales: helpers$1.noop,

	/**
	 * @private
	 */
	_datasetElementOptions: [
		'backgroundColor',
		'borderWidth',
		'borderColor',
		'borderCapStyle',
		'borderDash',
		'borderDashOffset',
		'borderJoinStyle',
		'fill'
	],

	/**
	 * @private
	 */
	_dataElementOptions: {
		backgroundColor: 'pointBackgroundColor',
		borderColor: 'pointBorderColor',
		borderWidth: 'pointBorderWidth',
		hitRadius: 'pointHitRadius',
		hoverBackgroundColor: 'pointHoverBackgroundColor',
		hoverBorderColor: 'pointHoverBorderColor',
		hoverBorderWidth: 'pointHoverBorderWidth',
		hoverRadius: 'pointHoverRadius',
		pointStyle: 'pointStyle',
		radius: 'pointRadius',
		rotation: 'pointRotation'
	},

	/**
	 * @private
	 */
	_getIndexScaleId: function() {
		return this.chart.scale.id;
	},

	/**
	 * @private
	 */
	_getValueScaleId: function() {
		return this.chart.scale.id;
	},

	update: function(reset) {
		var me = this;
		var meta = me.getMeta();
		var line = meta.dataset;
		var points = meta.data || [];
		var scale = me.chart.scale;
		var config = me._config;
		var i, ilen;

		// Compatibility: If the properties are defined with only the old name, use those values
		if (config.tension !== undefined && config.lineTension === undefined) {
			config.lineTension = config.tension;
		}

		// Utility
		line._scale = scale;
		line._datasetIndex = me.index;
		// Data
		line._children = points;
		line._loop = true;
		// Model
		line._model = me._resolveDatasetElementOptions(line);

		line.pivot();

		// Update Points
		for (i = 0, ilen = points.length; i < ilen; ++i) {
			me.updateElement(points[i], i, reset);
		}

		// Update bezier control points
		me.updateBezierControlPoints();

		// Now pivot the point for animation
		for (i = 0, ilen = points.length; i < ilen; ++i) {
			points[i].pivot();
		}
	},

	updateElement: function(point, index, reset) {
		var me = this;
		var custom = point.custom || {};
		var dataset = me.getDataset();
		var scale = me.chart.scale;
		var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
		var options = me._resolveDataElementOptions(point, index);
		var lineModel = me.getMeta().dataset._model;
		var x = reset ? scale.xCenter : pointPosition.x;
		var y = reset ? scale.yCenter : pointPosition.y;

		// Utility
		point._scale = scale;
		point._options = options;
		point._datasetIndex = me.index;
		point._index = index;

		// Desired view properties
		point._model = {
			x: x, // value not used in dataset scale, but we want a consistent API between scales
			y: y,
			skip: custom.skip || isNaN(x) || isNaN(y),
			// Appearance
			radius: options.radius,
			pointStyle: options.pointStyle,
			rotation: options.rotation,
			backgroundColor: options.backgroundColor,
			borderColor: options.borderColor,
			borderWidth: options.borderWidth,
			tension: valueOrDefault$7(custom.tension, lineModel ? lineModel.tension : 0),

			// Tooltip
			hitRadius: options.hitRadius
		};
	},

	/**
	 * @private
	 */
	_resolveDatasetElementOptions: function() {
		var me = this;
		var config = me._config;
		var options = me.chart.options;
		var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments);

		values.spanGaps = valueOrDefault$7(config.spanGaps, options.spanGaps);
		values.tension = valueOrDefault$7(config.lineTension, options.elements.line.tension);

		return values;
	},

	updateBezierControlPoints: function() {
		var me = this;
		var meta = me.getMeta();
		var area = me.chart.chartArea;
		var points = meta.data || [];
		var i, ilen, model, controlPoints;

		// Only consider points that are drawn in case the spanGaps option is used
		if (meta.dataset._model.spanGaps) {
			points = points.filter(function(pt) {
				return !pt._model.skip;
			});
		}

		function capControlPoint(pt, min, max) {
			return Math.max(Math.min(pt, max), min);
		}

		for (i = 0, ilen = points.length; i < ilen; ++i) {
			model = points[i]._model;
			controlPoints = helpers$1.splineCurve(
				helpers$1.previousItem(points, i, true)._model,
				model,
				helpers$1.nextItem(points, i, true)._model,
				model.tension
			);

			// Prevent the bezier going outside of the bounds of the graph
			model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right);
			model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom);
			model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right);
			model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom);
		}
	},

	setHoverStyle: function(point) {
		var model = point._model;
		var options = point._options;
		var getHoverColor = helpers$1.getHoverColor;

		point.$previousStyle = {
			backgroundColor: model.backgroundColor,
			borderColor: model.borderColor,
			borderWidth: model.borderWidth,
			radius: model.radius
		};

		model.backgroundColor = valueOrDefault$7(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
		model.borderColor = valueOrDefault$7(options.hoverBorderColor, getHoverColor(options.borderColor));
		model.borderWidth = valueOrDefault$7(options.hoverBorderWidth, options.borderWidth);
		model.radius = valueOrDefault$7(options.hoverRadius, options.radius);
	}
});

core_defaults._set('scatter', {
	hover: {
		mode: 'single'
	},

	scales: {
		xAxes: [{
			id: 'x-axis-1',    // need an ID so datasets can reference the scale
			type: 'linear',    // scatter should not use a category axis
			position: 'bottom'
		}],
		yAxes: [{
			id: 'y-axis-1',
			type: 'linear',
			position: 'left'
		}]
	},

	tooltips: {
		callbacks: {
			title: function() {
				return '';     // doesn't make sense for scatter since data are formatted as a point
			},
			label: function(item) {
				return '(' + item.xLabel + ', ' + item.yLabel + ')';
			}
		}
	}
});

core_defaults._set('global', {
	datasets: {
		scatter: {
			showLine: false
		}
	}
});

// Scatter charts use line controllers
var controller_scatter = controller_line;

// NOTE export a map in which the key represents the controller type, not
// the class, and so must be CamelCase in order to be correctly retrieved
// by the controller in core.controller.js (`controllers[meta.type]`).

var controllers = {
	bar: controller_bar,
	bubble: controller_bubble,
	doughnut: controller_doughnut,
	horizontalBar: controller_horizontalBar,
	line: controller_line,
	polarArea: controller_polarArea,
	pie: controller_pie,
	radar: controller_radar,
	scatter: controller_scatter
};

/**
 * Helper function to get relative position for an event
 * @param {Event|IEvent} event - The event to get the position for
 * @param {Chart} chart - The chart
 * @returns {object} the event position
 */
function getRelativePosition(e, chart) {
	if (e.native) {
		return {
			x: e.x,
			y: e.y
		};
	}

	return helpers$1.getRelativePosition(e, chart);
}

/**
 * Helper function to traverse all of the visible elements in the chart
 * @param {Chart} chart - the chart
 * @param {function} handler - the callback to execute for each visible item
 */
function parseVisibleItems(chart, handler) {
	var metasets = chart._getSortedVisibleDatasetMetas();
	var metadata, i, j, ilen, jlen, element;

	for (i = 0, ilen = metasets.length; i < ilen; ++i) {
		metadata = metasets[i].data;
		for (j = 0, jlen = metadata.length; j < jlen; ++j) {
			element = metadata[j];
			if (!element._view.skip) {
				handler(element);
			}
		}
	}
}

/**
 * Helper function to get the items that intersect the event position
 * @param {ChartElement[]} items - elements to filter
 * @param {object} position - the point to be nearest to
 * @return {ChartElement[]} the nearest items
 */
function getIntersectItems(chart, position) {
	var elements = [];

	parseVisibleItems(chart, function(element) {
		if (element.inRange(position.x, position.y)) {
			elements.push(element);
		}
	});

	return elements;
}

/**
 * Helper function to get the items nearest to the event position considering all visible items in teh chart
 * @param {Chart} chart - the chart to look at elements from
 * @param {object} position - the point to be nearest to
 * @param {boolean} intersect - if true, only consider items that intersect the position
 * @param {function} distanceMetric - function to provide the distance between points
 * @return {ChartElement[]} the nearest items
 */
function getNearestItems(chart, position, intersect, distanceMetric) {
	var minDistance = Number.POSITIVE_INFINITY;
	var nearestItems = [];

	parseVisibleItems(chart, function(element) {
		if (intersect && !element.inRange(position.x, position.y)) {
			return;
		}

		var center = element.getCenterPoint();
		var distance = distanceMetric(position, center);
		if (distance < minDistance) {
			nearestItems = [element];
			minDistance = distance;
		} else if (distance === minDistance) {
			// Can have multiple items at the same distance in which case we sort by size
			nearestItems.push(element);
		}
	});

	return nearestItems;
}

/**
 * Get a distance metric function for two points based on the
 * axis mode setting
 * @param {string} axis - the axis mode. x|y|xy
 */
function getDistanceMetricForAxis(axis) {
	var useX = axis.indexOf('x') !== -1;
	var useY = axis.indexOf('y') !== -1;

	return function(pt1, pt2) {
		var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
		var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
		return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
	};
}

function indexMode(chart, e, options) {
	var position = getRelativePosition(e, chart);
	// Default axis for index mode is 'x' to match old behaviour
	options.axis = options.axis || 'x';
	var distanceMetric = getDistanceMetricForAxis(options.axis);
	var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
	var elements = [];

	if (!items.length) {
		return [];
	}

	chart._getSortedVisibleDatasetMetas().forEach(function(meta) {
		var element = meta.data[items[0]._index];

		// don't count items that are skipped (null data)
		if (element && !element._view.skip) {
			elements.push(element);
		}
	});

	return elements;
}

/**
 * @interface IInteractionOptions
 */
/**
 * If true, only consider items that intersect the point
 * @name IInterfaceOptions#boolean
 * @type Boolean
 */

/**
 * Contains interaction related functions
 * @namespace Chart.Interaction
 */
var core_interaction = {
	// Helper function for different modes
	modes: {
		single: function(chart, e) {
			var position = getRelativePosition(e, chart);
			var elements = [];

			parseVisibleItems(chart, function(element) {
				if (element.inRange(position.x, position.y)) {
					elements.push(element);
					return elements;
				}
			});

			return elements.slice(0, 1);
		},

		/**
		 * @function Chart.Interaction.modes.label
		 * @deprecated since version 2.4.0
		 * @todo remove at version 3
		 * @private
		 */
		label: indexMode,

		/**
		 * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
		 * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
		 * @function Chart.Interaction.modes.index
		 * @since v2.4.0
		 * @param {Chart} chart - the chart we are returning items from
		 * @param {Event} e - the event we are find things at
		 * @param {IInteractionOptions} options - options to use during interaction
		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
		 */
		index: indexMode,

		/**
		 * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
		 * If the options.intersect is false, we find the nearest item and return the items in that dataset
		 * @function Chart.Interaction.modes.dataset
		 * @param {Chart} chart - the chart we are returning items from
		 * @param {Event} e - the event we are find things at
		 * @param {IInteractionOptions} options - options to use during interaction
		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
		 */
		dataset: function(chart, e, options) {
			var position = getRelativePosition(e, chart);
			options.axis = options.axis || 'xy';
			var distanceMetric = getDistanceMetricForAxis(options.axis);
			var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);

			if (items.length > 0) {
				items = chart.getDatasetMeta(items[0]._datasetIndex).data;
			}

			return items;
		},

		/**
		 * @function Chart.Interaction.modes.x-axis
		 * @deprecated since version 2.4.0. Use index mode and intersect == true
		 * @todo remove at version 3
		 * @private
		 */
		'x-axis': function(chart, e) {
			return indexMode(chart, e, {intersect: false});
		},

		/**
		 * Point mode returns all elements that hit test based on the event position
		 * of the event
		 * @function Chart.Interaction.modes.intersect
		 * @param {Chart} chart - the chart we are returning items from
		 * @param {Event} e - the event we are find things at
		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
		 */
		point: function(chart, e) {
			var position = getRelativePosition(e, chart);
			return getIntersectItems(chart, position);
		},

		/**
		 * nearest mode returns the element closest to the point
		 * @function Chart.Interaction.modes.intersect
		 * @param {Chart} chart - the chart we are returning items from
		 * @param {Event} e - the event we are find things at
		 * @param {IInteractionOptions} options - options to use
		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
		 */
		nearest: function(chart, e, options) {
			var position = getRelativePosition(e, chart);
			options.axis = options.axis || 'xy';
			var distanceMetric = getDistanceMetricForAxis(options.axis);
			return getNearestItems(chart, position, options.intersect, distanceMetric);
		},

		/**
		 * x mode returns the elements that hit-test at the current x coordinate
		 * @function Chart.Interaction.modes.x
		 * @param {Chart} chart - the chart we are returning items from
		 * @param {Event} e - the event we are find things at
		 * @param {IInteractionOptions} options - options to use
		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
		 */
		x: function(chart, e, options) {
			var position = getRelativePosition(e, chart);
			var items = [];
			var intersectsItem = false;

			parseVisibleItems(chart, function(element) {
				if (element.inXRange(position.x)) {
					items.push(element);
				}

				if (element.inRange(position.x, position.y)) {
					intersectsItem = true;
				}
			});

			// If we want to trigger on an intersect and we don't have any items
			// that intersect the position, return nothing
			if (options.intersect && !intersectsItem) {
				items = [];
			}
			return items;
		},

		/**
		 * y mode returns the elements that hit-test at the current y coordinate
		 * @function Chart.Interaction.modes.y
		 * @param {Chart} chart - the chart we are returning items from
		 * @param {Event} e - the event we are find things at
		 * @param {IInteractionOptions} options - options to use
		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
		 */
		y: function(chart, e, options) {
			var position = getRelativePosition(e, chart);
			var items = [];
			var intersectsItem = false;

			parseVisibleItems(chart, function(element) {
				if (element.inYRange(position.y)) {
					items.push(element);
				}

				if (element.inRange(position.x, position.y)) {
					intersectsItem = true;
				}
			});

			// If we want to trigger on an intersect and we don't have any items
			// that intersect the position, return nothing
			if (options.intersect && !intersectsItem) {
				items = [];
			}
			return items;
		}
	}
};

var extend = helpers$1.extend;

function filterByPosition(array, position) {
	return helpers$1.where(array, function(v) {
		return v.pos === position;
	});
}

function sortByWeight(array, reverse) {
	return array.sort(function(a, b) {
		var v0 = reverse ? b : a;
		var v1 = reverse ? a : b;
		return v0.weight === v1.weight ?
			v0.index - v1.index :
			v0.weight - v1.weight;
	});
}

function wrapBoxes(boxes) {
	var layoutBoxes = [];
	var i, ilen, box;

	for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) {
		box = boxes[i];
		layoutBoxes.push({
			index: i,
			box: box,
			pos: box.position,
			horizontal: box.isHorizontal(),
			weight: box.weight
		});
	}
	return layoutBoxes;
}

function setLayoutDims(layouts, params) {
	var i, ilen, layout;
	for (i = 0, ilen = layouts.length; i < ilen; ++i) {
		layout = layouts[i];
		// store width used instead of chartArea.w in fitBoxes
		layout.width = layout.horizontal
			? layout.box.fullWidth && params.availableWidth
			: params.vBoxMaxWidth;
		// store height used instead of chartArea.h in fitBoxes
		layout.height = layout.horizontal && params.hBoxMaxHeight;
	}
}

function buildLayoutBoxes(boxes) {
	var layoutBoxes = wrapBoxes(boxes);
	var left = sortByWeight(filterByPosition(layoutBoxes, 'left'), true);
	var right = sortByWeight(filterByPosition(layoutBoxes, 'right'));
	var top = sortByWeight(filterByPosition(layoutBoxes, 'top'), true);
	var bottom = sortByWeight(filterByPosition(layoutBoxes, 'bottom'));

	return {
		leftAndTop: left.concat(top),
		rightAndBottom: right.concat(bottom),
		chartArea: filterByPosition(layoutBoxes, 'chartArea'),
		vertical: left.concat(right),
		horizontal: top.concat(bottom)
	};
}

function getCombinedMax(maxPadding, chartArea, a, b) {
	return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]);
}

function updateDims(chartArea, params, layout) {
	var box = layout.box;
	var maxPadding = chartArea.maxPadding;
	var newWidth, newHeight;

	if (layout.size) {
		// this layout was already counted for, lets first reduce old size
		chartArea[layout.pos] -= layout.size;
	}
	layout.size = layout.horizontal ? box.height : box.width;
	chartArea[layout.pos] += layout.size;

	if (box.getPadding) {
		var boxPadding = box.getPadding();
		maxPadding.top = Math.max(maxPadding.top, boxPadding.top);
		maxPadding.left = Math.max(maxPadding.left, boxPadding.left);
		maxPadding.bottom = Math.max(maxPadding.bottom, boxPadding.bottom);
		maxPadding.right = Math.max(maxPadding.right, boxPadding.right);
	}

	newWidth = params.outerWidth - getCombinedMax(maxPadding, chartArea, 'left', 'right');
	newHeight = params.outerHeight - getCombinedMax(maxPadding, chartArea, 'top', 'bottom');

	if (newWidth !== chartArea.w || newHeight !== chartArea.h) {
		chartArea.w = newWidth;
		chartArea.h = newHeight;

		// return true if chart area changed in layout's direction
		var sizes = layout.horizontal ? [newWidth, chartArea.w] : [newHeight, chartArea.h];
		return sizes[0] !== sizes[1] && (!isNaN(sizes[0]) || !isNaN(sizes[1]));
	}
}

function handleMaxPadding(chartArea) {
	var maxPadding = chartArea.maxPadding;

	function updatePos(pos) {
		var change = Math.max(maxPadding[pos] - chartArea[pos], 0);
		chartArea[pos] += change;
		return change;
	}
	chartArea.y += updatePos('top');
	chartArea.x += updatePos('left');
	updatePos('right');
	updatePos('bottom');
}

function getMargins(horizontal, chartArea) {
	var maxPadding = chartArea.maxPadding;

	function marginForPositions(positions) {
		var margin = {left: 0, top: 0, right: 0, bottom: 0};
		positions.forEach(function(pos) {
			margin[pos] = Math.max(chartArea[pos], maxPadding[pos]);
		});
		return margin;
	}

	return horizontal
		? marginForPositions(['left', 'right'])
		: marginForPositions(['top', 'bottom']);
}

function fitBoxes(boxes, chartArea, params) {
	var refitBoxes = [];
	var i, ilen, layout, box, refit, changed;

	for (i = 0, ilen = boxes.length; i < ilen; ++i) {
		layout = boxes[i];
		box = layout.box;

		box.update(
			layout.width || chartArea.w,
			layout.height || chartArea.h,
			getMargins(layout.horizontal, chartArea)
		);
		if (updateDims(chartArea, params, layout)) {
			changed = true;
			if (refitBoxes.length) {
				// Dimensions changed and there were non full width boxes before this
				// -> we have to refit those
				refit = true;
			}
		}
		if (!box.fullWidth) { // fullWidth boxes don't need to be re-fitted in any case
			refitBoxes.push(layout);
		}
	}

	return refit ? fitBoxes(refitBoxes, chartArea, params) || changed : changed;
}

function placeBoxes(boxes, chartArea, params) {
	var userPadding = params.padding;
	var x = chartArea.x;
	var y = chartArea.y;
	var i, ilen, layout, box;

	for (i = 0, ilen = boxes.length; i < ilen; ++i) {
		layout = boxes[i];
		box = layout.box;
		if (layout.horizontal) {
			box.left = box.fullWidth ? userPadding.left : chartArea.left;
			box.right = box.fullWidth ? params.outerWidth - userPadding.right : chartArea.left + chartArea.w;
			box.top = y;
			box.bottom = y + box.height;
			box.width = box.right - box.left;
			y = box.bottom;
		} else {
			box.left = x;
			box.right = x + box.width;
			box.top = chartArea.top;
			box.bottom = chartArea.top + chartArea.h;
			box.height = box.bottom - box.top;
			x = box.right;
		}
	}

	chartArea.x = x;
	chartArea.y = y;
}

core_defaults._set('global', {
	layout: {
		padding: {
			top: 0,
			right: 0,
			bottom: 0,
			left: 0
		}
	}
});

/**
 * @interface ILayoutItem
 * @prop {string} position - The position of the item in the chart layout. Possible values are
 * 'left', 'top', 'right', 'bottom', and 'chartArea'
 * @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area
 * @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
 * @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
 * @prop {function} update - Takes two parameters: width and height. Returns size of item
 * @prop {function} getPadding -  Returns an object with padding on the edges
 * @prop {number} width - Width of item. Must be valid after update()
 * @prop {number} height - Height of item. Must be valid after update()
 * @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update
 * @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update
 * @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update
 * @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
 */

// The layout service is very self explanatory.  It's responsible for the layout within a chart.
// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
// It is this service's responsibility of carrying out that layout.
var core_layouts = {
	defaults: {},

	/**
	 * Register a box to a chart.
	 * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
	 * @param {Chart} chart - the chart to use
	 * @param {ILayoutItem} item - the item to add to be layed out
	 */
	addBox: function(chart, item) {
		if (!chart.boxes) {
			chart.boxes = [];
		}

		// initialize item with default values
		item.fullWidth = item.fullWidth || false;
		item.position = item.position || 'top';
		item.weight = item.weight || 0;
		item._layers = item._layers || function() {
			return [{
				z: 0,
				draw: function() {
					item.draw.apply(item, arguments);
				}
			}];
		};

		chart.boxes.push(item);
	},

	/**
	 * Remove a layoutItem from a chart
	 * @param {Chart} chart - the chart to remove the box from
	 * @param {ILayoutItem} layoutItem - the item to remove from the layout
	 */
	removeBox: function(chart, layoutItem) {
		var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
		if (index !== -1) {
			chart.boxes.splice(index, 1);
		}
	},

	/**
	 * Sets (or updates) options on the given `item`.
	 * @param {Chart} chart - the chart in which the item lives (or will be added to)
	 * @param {ILayoutItem} item - the item to configure with the given options
	 * @param {object} options - the new item options.
	 */
	configure: function(chart, item, options) {
		var props = ['fullWidth', 'position', 'weight'];
		var ilen = props.length;
		var i = 0;
		var prop;

		for (; i < ilen; ++i) {
			prop = props[i];
			if (options.hasOwnProperty(prop)) {
				item[prop] = options[prop];
			}
		}
	},

	/**
	 * Fits boxes of the given chart into the given size by having each box measure itself
	 * then running a fitting algorithm
	 * @param {Chart} chart - the chart
	 * @param {number} width - the width to fit into
	 * @param {number} height - the height to fit into
	 */
	update: function(chart, width, height) {
		if (!chart) {
			return;
		}

		var layoutOptions = chart.options.layout || {};
		var padding = helpers$1.options.toPadding(layoutOptions.padding);

		var availableWidth = width - padding.width;
		var availableHeight = height - padding.height;
		var boxes = buildLayoutBoxes(chart.boxes);
		var verticalBoxes = boxes.vertical;
		var horizontalBoxes = boxes.horizontal;

		// Essentially we now have any number of boxes on each of the 4 sides.
		// Our canvas looks like the following.
		// The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
		// B1 is the bottom axis
		// There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
		// These locations are single-box locations only, when trying to register a chartArea location that is already taken,
		// an error will be thrown.
		//
		// |----------------------------------------------------|
		// |                  T1 (Full Width)                   |
		// |----------------------------------------------------|
		// |    |    |                 T2                  |    |
		// |    |----|-------------------------------------|----|
		// |    |    | C1 |                           | C2 |    |
		// |    |    |----|                           |----|    |
		// |    |    |                                     |    |
		// | L1 | L2 |           ChartArea (C0)            | R1 |
		// |    |    |                                     |    |
		// |    |    |----|                           |----|    |
		// |    |    | C3 |                           | C4 |    |
		// |    |----|-------------------------------------|----|
		// |    |    |                 B1                  |    |
		// |----------------------------------------------------|
		// |                  B2 (Full Width)                   |
		// |----------------------------------------------------|
		//

		var params = Object.freeze({
			outerWidth: width,
			outerHeight: height,
			padding: padding,
			availableWidth: availableWidth,
			vBoxMaxWidth: availableWidth / 2 / verticalBoxes.length,
			hBoxMaxHeight: availableHeight / 2
		});
		var chartArea = extend({
			maxPadding: extend({}, padding),
			w: availableWidth,
			h: availableHeight,
			x: padding.left,
			y: padding.top
		}, padding);

		setLayoutDims(verticalBoxes.concat(horizontalBoxes), params);

		// First fit vertical boxes
		fitBoxes(verticalBoxes, chartArea, params);

		// Then fit horizontal boxes
		if (fitBoxes(horizontalBoxes, chartArea, params)) {
			// if the area changed, re-fit vertical boxes
			fitBoxes(verticalBoxes, chartArea, params);
		}

		handleMaxPadding(chartArea);

		// Finally place the boxes to correct coordinates
		placeBoxes(boxes.leftAndTop, chartArea, params);

		// Move to opposite side of chart
		chartArea.x += chartArea.w;
		chartArea.y += chartArea.h;

		placeBoxes(boxes.rightAndBottom, chartArea, params);

		chart.chartArea = {
			left: chartArea.left,
			top: chartArea.top,
			right: chartArea.left + chartArea.w,
			bottom: chartArea.top + chartArea.h
		};

		// Finally update boxes in chartArea (radial scale for example)
		helpers$1.each(boxes.chartArea, function(layout) {
			var box = layout.box;
			extend(box, chart.chartArea);
			box.update(chartArea.w, chartArea.h);
		});
	}
};

/**
 * Platform fallback implementation (minimal).
 * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
 */

var platform_basic = {
	acquireContext: function(item) {
		if (item && item.canvas) {
			// Support for any object associated to a canvas (including a context2d)
			item = item.canvas;
		}

		return item && item.getContext('2d') || null;
	}
};

var platform_dom = "/*\r\n * DOM element rendering detection\r\n * https://davidwalsh.name/detect-node-insertion\r\n */\r\n@keyframes chartjs-render-animation {\r\n\tfrom { opacity: 0.99; }\r\n\tto { opacity: 1; }\r\n}\r\n\r\n.chartjs-render-monitor {\r\n\tanimation: chartjs-render-animation 0.001s;\r\n}\r\n\r\n/*\r\n * DOM element resizing detection\r\n * https://github.com/marcj/css-element-queries\r\n */\r\n.chartjs-size-monitor,\r\n.chartjs-size-monitor-expand,\r\n.chartjs-size-monitor-shrink {\r\n\tposition: absolute;\r\n\tdirection: ltr;\r\n\tleft: 0;\r\n\ttop: 0;\r\n\tright: 0;\r\n\tbottom: 0;\r\n\toverflow: hidden;\r\n\tpointer-events: none;\r\n\tvisibility: hidden;\r\n\tz-index: -1;\r\n}\r\n\r\n.chartjs-size-monitor-expand > div {\r\n\tposition: absolute;\r\n\twidth: 1000000px;\r\n\theight: 1000000px;\r\n\tleft: 0;\r\n\ttop: 0;\r\n}\r\n\r\n.chartjs-size-monitor-shrink > div {\r\n\tposition: absolute;\r\n\twidth: 200%;\r\n\theight: 200%;\r\n\tleft: 0;\r\n\ttop: 0;\r\n}\r\n";

var platform_dom$1 = /*#__PURE__*/Object.freeze({
__proto__: null,
'default': platform_dom
});

var stylesheet = getCjsExportFromNamespace(platform_dom$1);

var EXPANDO_KEY = '$chartjs';
var CSS_PREFIX = 'chartjs-';
var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor';
var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];

/**
 * DOM event types -> Chart.js event types.
 * Note: only events with different types are mapped.
 * @see https://developer.mozilla.org/en-US/docs/Web/Events
 */
var EVENT_TYPES = {
	touchstart: 'mousedown',
	touchmove: 'mousemove',
	touchend: 'mouseup',
	pointerenter: 'mouseenter',
	pointerdown: 'mousedown',
	pointermove: 'mousemove',
	pointerup: 'mouseup',
	pointerleave: 'mouseout',
	pointerout: 'mouseout'
};

/**
 * The "used" size is the final value of a dimension property after all calculations have
 * been performed. This method uses the computed style of `element` but returns undefined
 * if the computed style is not expressed in pixels. That can happen in some cases where
 * `element` has a size relative to its parent and this last one is not yet displayed,
 * for example because of `display: none` on a parent node.
 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
 * @returns {number} Size in pixels or undefined if unknown.
 */
function readUsedSize(element, property) {
	var value = helpers$1.getStyle(element, property);
	var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
	return matches ? Number(matches[1]) : undefined;
}

/**
 * Initializes the canvas style and render size without modifying the canvas display size,
 * since responsiveness is handled by the controller.resize() method. The config is used
 * to determine the aspect ratio to apply in case no explicit height has been specified.
 */
function initCanvas(canvas, config) {
	var style = canvas.style;

	// NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
	// returns null or '' if no explicit value has been set to the canvas attribute.
	var renderHeight = canvas.getAttribute('height');
	var renderWidth = canvas.getAttribute('width');

	// Chart.js modifies some canvas values that we want to restore on destroy
	canvas[EXPANDO_KEY] = {
		initial: {
			height: renderHeight,
			width: renderWidth,
			style: {
				display: style.display,
				height: style.height,
				width: style.width
			}
		}
	};

	// Force canvas to display as block to avoid extra space caused by inline
	// elements, which would interfere with the responsive resize process.
	// https://github.com/chartjs/Chart.js/issues/2538
	style.display = style.display || 'block';

	if (renderWidth === null || renderWidth === '') {
		var displayWidth = readUsedSize(canvas, 'width');
		if (displayWidth !== undefined) {
			canvas.width = displayWidth;
		}
	}

	if (renderHeight === null || renderHeight === '') {
		if (canvas.style.height === '') {
			// If no explicit render height and style height, let's apply the aspect ratio,
			// which one can be specified by the user but also by charts as default option
			// (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
			canvas.height = canvas.width / (config.options.aspectRatio || 2);
		} else {
			var displayHeight = readUsedSize(canvas, 'height');
			if (displayWidth !== undefined) {
				canvas.height = displayHeight;
			}
		}
	}

	return canvas;
}

/**
 * Detects support for options object argument in addEventListener.
 * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
 * @private
 */
var supportsEventListenerOptions = (function() {
	var supports = false;
	try {
		var options = Object.defineProperty({}, 'passive', {
			// eslint-disable-next-line getter-return
			get: function() {
				supports = true;
			}
		});
		window.addEventListener('e', null, options);
	} catch (e) {
		// continue regardless of error
	}
	return supports;
}());

// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
// https://github.com/chartjs/Chart.js/issues/4287
var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;

function addListener(node, type, listener) {
	node.addEventListener(type, listener, eventListenerOptions);
}

function removeListener(node, type, listener) {
	node.removeEventListener(type, listener, eventListenerOptions);
}

function createEvent(type, chart, x, y, nativeEvent) {
	return {
		type: type,
		chart: chart,
		native: nativeEvent || null,
		x: x !== undefined ? x : null,
		y: y !== undefined ? y : null,
	};
}

function fromNativeEvent(event, chart) {
	var type = EVENT_TYPES[event.type] || event.type;
	var pos = helpers$1.getRelativePosition(event, chart);
	return createEvent(type, chart, pos.x, pos.y, event);
}

function throttled(fn, thisArg) {
	var ticking = false;
	var args = [];

	return function() {
		args = Array.prototype.slice.call(arguments);
		thisArg = thisArg || this;

		if (!ticking) {
			ticking = true;
			helpers$1.requestAnimFrame.call(window, function() {
				ticking = false;
				fn.apply(thisArg, args);
			});
		}
	};
}

function createDiv(cls) {
	var el = document.createElement('div');
	el.className = cls || '';
	return el;
}

// Implementation based on https://github.com/marcj/css-element-queries
function createResizer(handler) {
	var maxSize = 1000000;

	// NOTE(SB) Don't use innerHTML because it could be considered unsafe.
	// https://github.com/chartjs/Chart.js/issues/5902
	var resizer = createDiv(CSS_SIZE_MONITOR);
	var expand = createDiv(CSS_SIZE_MONITOR + '-expand');
	var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink');

	expand.appendChild(createDiv());
	shrink.appendChild(createDiv());

	resizer.appendChild(expand);
	resizer.appendChild(shrink);
	resizer._reset = function() {
		expand.scrollLeft = maxSize;
		expand.scrollTop = maxSize;
		shrink.scrollLeft = maxSize;
		shrink.scrollTop = maxSize;
	};

	var onScroll = function() {
		resizer._reset();
		handler();
	};

	addListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
	addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));

	return resizer;
}

// https://davidwalsh.name/detect-node-insertion
function watchForRender(node, handler) {
	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
	var proxy = expando.renderProxy = function(e) {
		if (e.animationName === CSS_RENDER_ANIMATION) {
			handler();
		}
	};

	helpers$1.each(ANIMATION_START_EVENTS, function(type) {
		addListener(node, type, proxy);
	});

	// #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
	// is removed then added back immediately (same animation frame?). Accessing the
	// `offsetParent` property will force a reflow and re-evaluate the CSS animation.
	// https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
	// https://github.com/chartjs/Chart.js/issues/4737
	expando.reflow = !!node.offsetParent;

	node.classList.add(CSS_RENDER_MONITOR);
}

function unwatchForRender(node) {
	var expando = node[EXPANDO_KEY] || {};
	var proxy = expando.renderProxy;

	if (proxy) {
		helpers$1.each(ANIMATION_START_EVENTS, function(type) {
			removeListener(node, type, proxy);
		});

		delete expando.renderProxy;
	}

	node.classList.remove(CSS_RENDER_MONITOR);
}

function addResizeListener(node, listener, chart) {
	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});

	// Let's keep track of this added resizer and thus avoid DOM query when removing it.
	var resizer = expando.resizer = createResizer(throttled(function() {
		if (expando.resizer) {
			var container = chart.options.maintainAspectRatio && node.parentNode;
			var w = container ? container.clientWidth : 0;
			listener(createEvent('resize', chart));
			if (container && container.clientWidth < w && chart.canvas) {
				// If the container size shrank during chart resize, let's assume
				// scrollbar appeared. So we resize again with the scrollbar visible -
				// effectively making chart smaller and the scrollbar hidden again.
				// Because we are inside `throttled`, and currently `ticking`, scroll
				// events are ignored during this whole 2 resize process.
				// If we assumed wrong and something else happened, we are resizing
				// twice in a frame (potential performance issue)
				listener(createEvent('resize', chart));
			}
		}
	}));

	// The resizer needs to be attached to the node parent, so we first need to be
	// sure that `node` is attached to the DOM before injecting the resizer element.
	watchForRender(node, function() {
		if (expando.resizer) {
			var container = node.parentNode;
			if (container && container !== resizer.parentNode) {
				container.insertBefore(resizer, container.firstChild);
			}

			// The container size might have changed, let's reset the resizer state.
			resizer._reset();
		}
	});
}

function removeResizeListener(node) {
	var expando = node[EXPANDO_KEY] || {};
	var resizer = expando.resizer;

	delete expando.resizer;
	unwatchForRender(node);

	if (resizer && resizer.parentNode) {
		resizer.parentNode.removeChild(resizer);
	}
}

/**
 * Injects CSS styles inline if the styles are not already present.
 * @param {HTMLDocument|ShadowRoot} rootNode - the node to contain the <style>.
 * @param {string} css - the CSS to be injected.
 */
function injectCSS(rootNode, css) {
	// https://stackoverflow.com/q/3922139
	var expando = rootNode[EXPANDO_KEY] || (rootNode[EXPANDO_KEY] = {});
	if (!expando.containsStyles) {
		expando.containsStyles = true;
		css = '/* Chart.js */\n' + css;
		var style = document.createElement('style');
		style.setAttribute('type', 'text/css');
		style.appendChild(document.createTextNode(css));
		rootNode.appendChild(style);
	}
}

var platform_dom$2 = {
	/**
	 * When `true`, prevents the automatic injection of the stylesheet required to
	 * correctly detect when the chart is added to the DOM and then resized. This
	 * switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`)
	 * to be manually imported to make this library compatible with any CSP.
	 * See https://github.com/chartjs/Chart.js/issues/5208
	 */
	disableCSSInjection: false,

	/**
	 * This property holds whether this platform is enabled for the current environment.
	 * Currently used by platform.js to select the proper implementation.
	 * @private
	 */
	_enabled: typeof window !== 'undefined' && typeof document !== 'undefined',

	/**
	 * Initializes resources that depend on platform options.
	 * @param {HTMLCanvasElement} canvas - The Canvas element.
	 * @private
	 */
	_ensureLoaded: function(canvas) {
		if (!this.disableCSSInjection) {
			// If the canvas is in a shadow DOM, then the styles must also be inserted
			// into the same shadow DOM.
			// https://github.com/chartjs/Chart.js/issues/5763
			var root = canvas.getRootNode ? canvas.getRootNode() : document;
			var targetNode = root.host ? root : document.head;
			injectCSS(targetNode, stylesheet);
		}
	},

	acquireContext: function(item, config) {
		if (typeof item === 'string') {
			item = document.getElementById(item);
		} else if (item.length) {
			// Support for array based queries (such as jQuery)
			item = item[0];
		}

		if (item && item.canvas) {
			// Support for any object associated to a canvas (including a context2d)
			item = item.canvas;
		}

		// To prevent canvas fingerprinting, some add-ons undefine the getContext
		// method, for example: https://github.com/kkapsner/CanvasBlocker
		// https://github.com/chartjs/Chart.js/issues/2807
		var context = item && item.getContext && item.getContext('2d');

		// `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
		// inside an iframe or when running in a protected environment. We could guess the
		// types from their toString() value but let's keep things flexible and assume it's
		// a sufficient condition if the item has a context2D which has item as `canvas`.
		// https://github.com/chartjs/Chart.js/issues/3887
		// https://github.com/chartjs/Chart.js/issues/4102
		// https://github.com/chartjs/Chart.js/issues/4152
		if (context && context.canvas === item) {
			// Load platform resources on first chart creation, to make it possible to
			// import the library before setting platform options.
			this._ensureLoaded(item);
			initCanvas(item, config);
			return context;
		}

		return null;
	},

	releaseContext: function(context) {
		var canvas = context.canvas;
		if (!canvas[EXPANDO_KEY]) {
			return;
		}

		var initial = canvas[EXPANDO_KEY].initial;
		['height', 'width'].forEach(function(prop) {
			var value = initial[prop];
			if (helpers$1.isNullOrUndef(value)) {
				canvas.removeAttribute(prop);
			} else {
				canvas.setAttribute(prop, value);
			}
		});

		helpers$1.each(initial.style || {}, function(value, key) {
			canvas.style[key] = value;
		});

		// The canvas render size might have been changed (and thus the state stack discarded),
		// we can't use save() and restore() to restore the initial state. So make sure that at
		// least the canvas context is reset to the default state by setting the canvas width.
		// https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
		// eslint-disable-next-line no-self-assign
		canvas.width = canvas.width;

		delete canvas[EXPANDO_KEY];
	},

	addEventListener: function(chart, type, listener) {
		var canvas = chart.canvas;
		if (type === 'resize') {
			// Note: the resize event is not supported on all browsers.
			addResizeListener(canvas, listener, chart);
			return;
		}

		var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
		var proxies = expando.proxies || (expando.proxies = {});
		var proxy = proxies[chart.id + '_' + type] = function(event) {
			listener(fromNativeEvent(event, chart));
		};

		addListener(canvas, type, proxy);
	},

	removeEventListener: function(chart, type, listener) {
		var canvas = chart.canvas;
		if (type === 'resize') {
			// Note: the resize event is not supported on all browsers.
			removeResizeListener(canvas);
			return;
		}

		var expando = listener[EXPANDO_KEY] || {};
		var proxies = expando.proxies || {};
		var proxy = proxies[chart.id + '_' + type];
		if (!proxy) {
			return;
		}

		removeListener(canvas, type, proxy);
	}
};

// DEPRECATIONS

/**
 * Provided for backward compatibility, use EventTarget.addEventListener instead.
 * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
 * @function Chart.helpers.addEvent
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers$1.addEvent = addListener;

/**
 * Provided for backward compatibility, use EventTarget.removeEventListener instead.
 * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
 * @function Chart.helpers.removeEvent
 * @deprecated since version 2.7.0
 * @todo remove at version 3
 * @private
 */
helpers$1.removeEvent = removeListener;

// @TODO Make possible to select another platform at build time.
var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic;

/**
 * @namespace Chart.platform
 * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
 * @since 2.4.0
 */
var platform = helpers$1.extend({
	/**
	 * @since 2.7.0
	 */
	initialize: function() {},

	/**
	 * Called at chart construction time, returns a context2d instance implementing
	 * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
	 * @param {*} item - The native item from which to acquire context (platform specific)
	 * @param {object} options - The chart options
	 * @returns {CanvasRenderingContext2D} context2d instance
	 */
	acquireContext: function() {},

	/**
	 * Called at chart destruction time, releases any resources associated to the context
	 * previously returned by the acquireContext() method.
	 * @param {CanvasRenderingContext2D} context - The context2d instance
	 * @returns {boolean} true if the method succeeded, else false
	 */
	releaseContext: function() {},

	/**
	 * Registers the specified listener on the given chart.
	 * @param {Chart} chart - Chart from which to listen for event
	 * @param {string} type - The ({@link IEvent}) type to listen for
	 * @param {function} listener - Receives a notification (an object that implements
	 * the {@link IEvent} interface) when an event of the specified type occurs.
	 */
	addEventListener: function() {},

	/**
	 * Removes the specified listener previously registered with addEventListener.
	 * @param {Chart} chart - Chart from which to remove the listener
	 * @param {string} type - The ({@link IEvent}) type to remove
	 * @param {function} listener - The listener function to remove from the event target.
	 */
	removeEventListener: function() {}

}, implementation);

core_defaults._set('global', {
	plugins: {}
});

/**
 * The plugin service singleton
 * @namespace Chart.plugins
 * @since 2.1.0
 */
var core_plugins = {
	/**
	 * Globally registered plugins.
	 * @private
	 */
	_plugins: [],

	/**
	 * This identifier is used to invalidate the descriptors cache attached to each chart
	 * when a global plugin is registered or unregistered. In this case, the cache ID is
	 * incremented and descriptors are regenerated during following API calls.
	 * @private
	 */
	_cacheId: 0,

	/**
	 * Registers the given plugin(s) if not already registered.
	 * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
	 */
	register: function(plugins) {
		var p = this._plugins;
		([]).concat(plugins).forEach(function(plugin) {
			if (p.indexOf(plugin) === -1) {
				p.push(plugin);
			}
		});

		this._cacheId++;
	},

	/**
	 * Unregisters the given plugin(s) only if registered.
	 * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
	 */
	unregister: function(plugins) {
		var p = this._plugins;
		([]).concat(plugins).forEach(function(plugin) {
			var idx = p.indexOf(plugin);
			if (idx !== -1) {
				p.splice(idx, 1);
			}
		});

		this._cacheId++;
	},

	/**
	 * Remove all registered plugins.
	 * @since 2.1.5
	 */
	clear: function() {
		this._plugins = [];
		this._cacheId++;
	},

	/**
	 * Returns the number of registered plugins?
	 * @returns {number}
	 * @since 2.1.5
	 */
	count: function() {
		return this._plugins.length;
	},

	/**
	 * Returns all registered plugin instances.
	 * @returns {IPlugin[]} array of plugin objects.
	 * @since 2.1.5
	 */
	getAll: function() {
		return this._plugins;
	},

	/**
	 * Calls enabled plugins for `chart` on the specified hook and with the given args.
	 * This method immediately returns as soon as a plugin explicitly returns false. The
	 * returned value can be used, for instance, to interrupt the current action.
	 * @param {Chart} chart - The chart instance for which plugins should be called.
	 * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
	 * @param {Array} [args] - Extra arguments to apply to the hook call.
	 * @returns {boolean} false if any of the plugins return false, else returns true.
	 */
	notify: function(chart, hook, args) {
		var descriptors = this.descriptors(chart);
		var ilen = descriptors.length;
		var i, descriptor, plugin, params, method;

		for (i = 0; i < ilen; ++i) {
			descriptor = descriptors[i];
			plugin = descriptor.plugin;
			method = plugin[hook];
			if (typeof method === 'function') {
				params = [chart].concat(args || []);
				params.push(descriptor.options);
				if (method.apply(plugin, params) === false) {
					return false;
				}
			}
		}

		return true;
	},

	/**
	 * Returns descriptors of enabled plugins for the given chart.
	 * @returns {object[]} [{ plugin, options }]
	 * @private
	 */
	descriptors: function(chart) {
		var cache = chart.$plugins || (chart.$plugins = {});
		if (cache.id === this._cacheId) {
			return cache.descriptors;
		}

		var plugins = [];
		var descriptors = [];
		var config = (chart && chart.config) || {};
		var options = (config.options && config.options.plugins) || {};

		this._plugins.concat(config.plugins || []).forEach(function(plugin) {
			var idx = plugins.indexOf(plugin);
			if (idx !== -1) {
				return;
			}

			var id = plugin.id;
			var opts = options[id];
			if (opts === false) {
				return;
			}

			if (opts === true) {
				opts = helpers$1.clone(core_defaults.global.plugins[id]);
			}

			plugins.push(plugin);
			descriptors.push({
				plugin: plugin,
				options: opts || {}
			});
		});

		cache.descriptors = descriptors;
		cache.id = this._cacheId;
		return descriptors;
	},

	/**
	 * Invalidates cache for the given chart: descriptors hold a reference on plugin option,
	 * but in some cases, this reference can be changed by the user when updating options.
	 * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
	 * @private
	 */
	_invalidate: function(chart) {
		delete chart.$plugins;
	}
};

var core_scaleService = {
	// Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
	// use the new chart options to grab the correct scale
	constructors: {},
	// Use a registration function so that we can move to an ES6 map when we no longer need to support
	// old browsers

	// Scale config defaults
	defaults: {},
	registerScaleType: function(type, scaleConstructor, scaleDefaults) {
		this.constructors[type] = scaleConstructor;
		this.defaults[type] = helpers$1.clone(scaleDefaults);
	},
	getScaleConstructor: function(type) {
		return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
	},
	getScaleDefaults: function(type) {
		// Return the scale defaults merged with the global settings so that we always use the latest ones
		return this.defaults.hasOwnProperty(type) ? helpers$1.merge(Object.create(null), [core_defaults.scale, this.defaults[type]]) : {};
	},
	updateScaleDefaults: function(type, additions) {
		var me = this;
		if (me.defaults.hasOwnProperty(type)) {
			me.defaults[type] = helpers$1.extend(me.defaults[type], additions);
		}
	},
	addScalesToLayout: function(chart) {
		// Adds each scale to the chart.boxes array to be sized accordingly
		helpers$1.each(chart.scales, function(scale) {
			// Set ILayoutItem parameters for backwards compatibility
			scale.fullWidth = scale.options.fullWidth;
			scale.position = scale.options.position;
			scale.weight = scale.options.weight;
			core_layouts.addBox(chart, scale);
		});
	}
};

var valueOrDefault$8 = helpers$1.valueOrDefault;
var getRtlHelper = helpers$1.rtl.getRtlAdapter;

core_defaults._set('global', {
	tooltips: {
		enabled: true,
		custom: null,
		mode: 'nearest',
		position: 'average',
		intersect: true,
		backgroundColor: 'rgba(0,0,0,0.8)',
		titleFontStyle: 'bold',
		titleSpacing: 2,
		titleMarginBottom: 6,
		titleFontColor: '#fff',
		titleAlign: 'left',
		bodySpacing: 2,
		bodyFontColor: '#fff',
		bodyAlign: 'left',
		footerFontStyle: 'bold',
		footerSpacing: 2,
		footerMarginTop: 6,
		footerFontColor: '#fff',
		footerAlign: 'left',
		yPadding: 6,
		xPadding: 6,
		caretPadding: 2,
		caretSize: 5,
		cornerRadius: 6,
		multiKeyBackground: '#fff',
		displayColors: true,
		borderColor: 'rgba(0,0,0,0)',
		borderWidth: 0,
		callbacks: {
			// Args are: (tooltipItems, data)
			beforeTitle: helpers$1.noop,
			title: function(tooltipItems, data) {
				var title = '';
				var labels = data.labels;
				var labelCount = labels ? labels.length : 0;

				if (tooltipItems.length > 0) {
					var item = tooltipItems[0];
					if (item.label) {
						title = item.label;
					} else if (item.xLabel) {
						title = item.xLabel;
					} else if (labelCount > 0 && item.index < labelCount) {
						title = labels[item.index];
					}
				}

				return title;
			},
			afterTitle: helpers$1.noop,

			// Args are: (tooltipItems, data)
			beforeBody: helpers$1.noop,

			// Args are: (tooltipItem, data)
			beforeLabel: helpers$1.noop,
			label: function(tooltipItem, data) {
				var label = data.datasets[tooltipItem.datasetIndex].label || '';

				if (label) {
					label += ': ';
				}
				if (!helpers$1.isNullOrUndef(tooltipItem.value)) {
					label += tooltipItem.value;
				} else {
					label += tooltipItem.yLabel;
				}
				return label;
			},
			labelColor: function(tooltipItem, chart) {
				var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
				var activeElement = meta.data[tooltipItem.index];
				var view = activeElement._view;
				return {
					borderColor: view.borderColor,
					backgroundColor: view.backgroundColor
				};
			},
			labelTextColor: function() {
				return this._options.bodyFontColor;
			},
			afterLabel: helpers$1.noop,

			// Args are: (tooltipItems, data)
			afterBody: helpers$1.noop,

			// Args are: (tooltipItems, data)
			beforeFooter: helpers$1.noop,
			footer: helpers$1.noop,
			afterFooter: helpers$1.noop
		}
	}
});

var positioners = {
	/**
	 * Average mode places the tooltip at the average position of the elements shown
	 * @function Chart.Tooltip.positioners.average
	 * @param elements {ChartElement[]} the elements being displayed in the tooltip
	 * @returns {object} tooltip position
	 */
	average: function(elements) {
		if (!elements.length) {
			return false;
		}

		var i, len;
		var x = 0;
		var y = 0;
		var count = 0;

		for (i = 0, len = elements.length; i < len; ++i) {
			var el = elements[i];
			if (el && el.hasValue()) {
				var pos = el.tooltipPosition();
				x += pos.x;
				y += pos.y;
				++count;
			}
		}

		return {
			x: x / count,
			y: y / count
		};
	},

	/**
	 * Gets the tooltip position nearest of the item nearest to the event position
	 * @function Chart.Tooltip.positioners.nearest
	 * @param elements {Chart.Element[]} the tooltip elements
	 * @param eventPosition {object} the position of the event in canvas coordinates
	 * @returns {object} the tooltip position
	 */
	nearest: function(elements, eventPosition) {
		var x = eventPosition.x;
		var y = eventPosition.y;
		var minDistance = Number.POSITIVE_INFINITY;
		var i, len, nearestElement;

		for (i = 0, len = elements.length; i < len; ++i) {
			var el = elements[i];
			if (el && el.hasValue()) {
				var center = el.getCenterPoint();
				var d = helpers$1.distanceBetweenPoints(eventPosition, center);

				if (d < minDistance) {
					minDistance = d;
					nearestElement = el;
				}
			}
		}

		if (nearestElement) {
			var tp = nearestElement.tooltipPosition();
			x = tp.x;
			y = tp.y;
		}

		return {
			x: x,
			y: y
		};
	}
};

// Helper to push or concat based on if the 2nd parameter is an array or not
function pushOrConcat(base, toPush) {
	if (toPush) {
		if (helpers$1.isArray(toPush)) {
			// base = base.concat(toPush);
			Array.prototype.push.apply(base, toPush);
		} else {
			base.push(toPush);
		}
	}

	return base;
}

/**
 * Returns array of strings split by newline
 * @param {string} value - The value to split by newline.
 * @returns {string[]} value if newline present - Returned from String split() method
 * @function
 */
function splitNewlines(str) {
	if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) {
		return str.split('\n');
	}
	return str;
}


/**
 * Private helper to create a tooltip item model
 * @param element - the chart element (point, arc, bar) to create the tooltip item for
 * @return new tooltip item
 */
function createTooltipItem(element) {
	var xScale = element._xScale;
	var yScale = element._yScale || element._scale; // handle radar || polarArea charts
	var index = element._index;
	var datasetIndex = element._datasetIndex;
	var controller = element._chart.getDatasetMeta(datasetIndex).controller;
	var indexScale = controller._getIndexScale();
	var valueScale = controller._getValueScale();

	return {
		xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
		yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
		label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '',
		value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '',
		index: index,
		datasetIndex: datasetIndex,
		x: element._model.x,
		y: element._model.y
	};
}

/**
 * Helper to get the reset model for the tooltip
 * @param tooltipOpts {object} the tooltip options
 */
function getBaseModel(tooltipOpts) {
	var globalDefaults = core_defaults.global;

	return {
		// Positioning
		xPadding: tooltipOpts.xPadding,
		yPadding: tooltipOpts.yPadding,
		xAlign: tooltipOpts.xAlign,
		yAlign: tooltipOpts.yAlign,

		// Drawing direction and text direction
		rtl: tooltipOpts.rtl,
		textDirection: tooltipOpts.textDirection,

		// Body
		bodyFontColor: tooltipOpts.bodyFontColor,
		_bodyFontFamily: valueOrDefault$8(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
		_bodyFontStyle: valueOrDefault$8(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
		_bodyAlign: tooltipOpts.bodyAlign,
		bodyFontSize: valueOrDefault$8(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
		bodySpacing: tooltipOpts.bodySpacing,

		// Title
		titleFontColor: tooltipOpts.titleFontColor,
		_titleFontFamily: valueOrDefault$8(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
		_titleFontStyle: valueOrDefault$8(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
		titleFontSize: valueOrDefault$8(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
		_titleAlign: tooltipOpts.titleAlign,
		titleSpacing: tooltipOpts.titleSpacing,
		titleMarginBottom: tooltipOpts.titleMarginBottom,

		// Footer
		footerFontColor: tooltipOpts.footerFontColor,
		_footerFontFamily: valueOrDefault$8(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
		_footerFontStyle: valueOrDefault$8(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
		footerFontSize: valueOrDefault$8(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
		_footerAlign: tooltipOpts.footerAlign,
		footerSpacing: tooltipOpts.footerSpacing,
		footerMarginTop: tooltipOpts.footerMarginTop,

		// Appearance
		caretSize: tooltipOpts.caretSize,
		cornerRadius: tooltipOpts.cornerRadius,
		backgroundColor: tooltipOpts.backgroundColor,
		opacity: 0,
		legendColorBackground: tooltipOpts.multiKeyBackground,
		displayColors: tooltipOpts.displayColors,
		borderColor: tooltipOpts.borderColor,
		borderWidth: tooltipOpts.borderWidth
	};
}

/**
 * Get the size of the tooltip
 */
function getTooltipSize(tooltip, model) {
	var ctx = tooltip._chart.ctx;

	var height = model.yPadding * 2; // Tooltip Padding
	var width = 0;

	// Count of all lines in the body
	var body = model.body;
	var combinedBodyLength = body.reduce(function(count, bodyItem) {
		return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
	}, 0);
	combinedBodyLength += model.beforeBody.length + model.afterBody.length;

	var titleLineCount = model.title.length;
	var footerLineCount = model.footer.length;
	var titleFontSize = model.titleFontSize;
	var bodyFontSize = model.bodyFontSize;
	var footerFontSize = model.footerFontSize;

	height += titleLineCount * titleFontSize; // Title Lines
	height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
	height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
	height += combinedBodyLength * bodyFontSize; // Body Lines
	height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
	height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
	height += footerLineCount * (footerFontSize); // Footer Lines
	height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing

	// Title width
	var widthPadding = 0;
	var maxLineWidth = function(line) {
		width = Math.max(width, ctx.measureText(line).width + widthPadding);
	};

	ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
	helpers$1.each(model.title, maxLineWidth);

	// Body width
	ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
	helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth);

	// Body lines may include some extra width due to the color box
	widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
	helpers$1.each(body, function(bodyItem) {
		helpers$1.each(bodyItem.before, maxLineWidth);
		helpers$1.each(bodyItem.lines, maxLineWidth);
		helpers$1.each(bodyItem.after, maxLineWidth);
	});

	// Reset back to 0
	widthPadding = 0;

	// Footer width
	ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
	helpers$1.each(model.footer, maxLineWidth);

	// Add padding
	width += 2 * model.xPadding;

	return {
		width: width,
		height: height
	};
}

/**
 * Helper to get the alignment of a tooltip given the size
 */
function determineAlignment(tooltip, size) {
	var model = tooltip._model;
	var chart = tooltip._chart;
	var chartArea = tooltip._chart.chartArea;
	var xAlign = 'center';
	var yAlign = 'center';

	if (model.y < size.height) {
		yAlign = 'top';
	} else if (model.y > (chart.height - size.height)) {
		yAlign = 'bottom';
	}

	var lf, rf; // functions to determine left, right alignment
	var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
	var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
	var midX = (chartArea.left + chartArea.right) / 2;
	var midY = (chartArea.top + chartArea.bottom) / 2;

	if (yAlign === 'center') {
		lf = function(x) {
			return x <= midX;
		};
		rf = function(x) {
			return x > midX;
		};
	} else {
		lf = function(x) {
			return x <= (size.width / 2);
		};
		rf = function(x) {
			return x >= (chart.width - (size.width / 2));
		};
	}

	olf = function(x) {
		return x + size.width + model.caretSize + model.caretPadding > chart.width;
	};
	orf = function(x) {
		return x - size.width - model.caretSize - model.caretPadding < 0;
	};
	yf = function(y) {
		return y <= midY ? 'top' : 'bottom';
	};

	if (lf(model.x)) {
		xAlign = 'left';

		// Is tooltip too wide and goes over the right side of the chart.?
		if (olf(model.x)) {
			xAlign = 'center';
			yAlign = yf(model.y);
		}
	} else if (rf(model.x)) {
		xAlign = 'right';

		// Is tooltip too wide and goes outside left edge of canvas?
		if (orf(model.x)) {
			xAlign = 'center';
			yAlign = yf(model.y);
		}
	}

	var opts = tooltip._options;
	return {
		xAlign: opts.xAlign ? opts.xAlign : xAlign,
		yAlign: opts.yAlign ? opts.yAlign : yAlign
	};
}

/**
 * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
 */
function getBackgroundPoint(vm, size, alignment, chart) {
	// Background Position
	var x = vm.x;
	var y = vm.y;

	var caretSize = vm.caretSize;
	var caretPadding = vm.caretPadding;
	var cornerRadius = vm.cornerRadius;
	var xAlign = alignment.xAlign;
	var yAlign = alignment.yAlign;
	var paddingAndSize = caretSize + caretPadding;
	var radiusAndPadding = cornerRadius + caretPadding;

	if (xAlign === 'right') {
		x -= size.width;
	} else if (xAlign === 'center') {
		x -= (size.width / 2);
		if (x + size.width > chart.width) {
			x = chart.width - size.width;
		}
		if (x < 0) {
			x = 0;
		}
	}

	if (yAlign === 'top') {
		y += paddingAndSize;
	} else if (yAlign === 'bottom') {
		y -= size.height + paddingAndSize;
	} else {
		y -= (size.height / 2);
	}

	if (yAlign === 'center') {
		if (xAlign === 'left') {
			x += paddingAndSize;
		} else if (xAlign === 'right') {
			x -= paddingAndSize;
		}
	} else if (xAlign === 'left') {
		x -= radiusAndPadding;
	} else if (xAlign === 'right') {
		x += radiusAndPadding;
	}

	return {
		x: x,
		y: y
	};
}

function getAlignedX(vm, align) {
	return align === 'center'
		? vm.x + vm.width / 2
		: align === 'right'
			? vm.x + vm.width - vm.xPadding
			: vm.x + vm.xPadding;
}

/**
 * Helper to build before and after body lines
 */
function getBeforeAfterBodyLines(callback) {
	return pushOrConcat([], splitNewlines(callback));
}

var exports$4 = core_element.extend({
	initialize: function() {
		this._model = getBaseModel(this._options);
		this._lastActive = [];
	},

	// Get the title
	// Args are: (tooltipItem, data)
	getTitle: function() {
		var me = this;
		var opts = me._options;
		var callbacks = opts.callbacks;

		var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
		var title = callbacks.title.apply(me, arguments);
		var afterTitle = callbacks.afterTitle.apply(me, arguments);

		var lines = [];
		lines = pushOrConcat(lines, splitNewlines(beforeTitle));
		lines = pushOrConcat(lines, splitNewlines(title));
		lines = pushOrConcat(lines, splitNewlines(afterTitle));

		return lines;
	},

	// Args are: (tooltipItem, data)
	getBeforeBody: function() {
		return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments));
	},

	// Args are: (tooltipItem, data)
	getBody: function(tooltipItems, data) {
		var me = this;
		var callbacks = me._options.callbacks;
		var bodyItems = [];

		helpers$1.each(tooltipItems, function(tooltipItem) {
			var bodyItem = {
				before: [],
				lines: [],
				after: []
			};
			pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data)));
			pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
			pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data)));

			bodyItems.push(bodyItem);
		});

		return bodyItems;
	},

	// Args are: (tooltipItem, data)
	getAfterBody: function() {
		return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments));
	},

	// Get the footer and beforeFooter and afterFooter lines
	// Args are: (tooltipItem, data)
	getFooter: function() {
		var me = this;
		var callbacks = me._options.callbacks;

		var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
		var footer = callbacks.footer.apply(me, arguments);
		var afterFooter = callbacks.afterFooter.apply(me, arguments);

		var lines = [];
		lines = pushOrConcat(lines, splitNewlines(beforeFooter));
		lines = pushOrConcat(lines, splitNewlines(footer));
		lines = pushOrConcat(lines, splitNewlines(afterFooter));

		return lines;
	},

	update: function(changed) {
		var me = this;
		var opts = me._options;

		// Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
		// that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time
		// which breaks any animations.
		var existingModel = me._model;
		var model = me._model = getBaseModel(opts);
		var active = me._active;

		var data = me._data;

		// In the case where active.length === 0 we need to keep these at existing values for good animations
		var alignment = {
			xAlign: existingModel.xAlign,
			yAlign: existingModel.yAlign
		};
		var backgroundPoint = {
			x: existingModel.x,
			y: existingModel.y
		};
		var tooltipSize = {
			width: existingModel.width,
			height: existingModel.height
		};
		var tooltipPosition = {
			x: existingModel.caretX,
			y: existingModel.caretY
		};

		var i, len;

		if (active.length) {
			model.opacity = 1;

			var labelColors = [];
			var labelTextColors = [];
			tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition);

			var tooltipItems = [];
			for (i = 0, len = active.length; i < len; ++i) {
				tooltipItems.push(createTooltipItem(active[i]));
			}

			// If the user provided a filter function, use it to modify the tooltip items
			if (opts.filter) {
				tooltipItems = tooltipItems.filter(function(a) {
					return opts.filter(a, data);
				});
			}

			// If the user provided a sorting function, use it to modify the tooltip items
			if (opts.itemSort) {
				tooltipItems = tooltipItems.sort(function(a, b) {
					return opts.itemSort(a, b, data);
				});
			}

			// Determine colors for boxes
			helpers$1.each(tooltipItems, function(tooltipItem) {
				labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
				labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
			});


			// Build the Text Lines
			model.title = me.getTitle(tooltipItems, data);
			model.beforeBody = me.getBeforeBody(tooltipItems, data);
			model.body = me.getBody(tooltipItems, data);
			model.afterBody = me.getAfterBody(tooltipItems, data);
			model.footer = me.getFooter(tooltipItems, data);

			// Initial positioning and colors
			model.x = tooltipPosition.x;
			model.y = tooltipPosition.y;
			model.caretPadding = opts.caretPadding;
			model.labelColors = labelColors;
			model.labelTextColors = labelTextColors;

			// data points
			model.dataPoints = tooltipItems;

			// We need to determine alignment of the tooltip
			tooltipSize = getTooltipSize(this, model);
			alignment = determineAlignment(this, tooltipSize);
			// Final Size and Position
			backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
		} else {
			model.opacity = 0;
		}

		model.xAlign = alignment.xAlign;
		model.yAlign = alignment.yAlign;
		model.x = backgroundPoint.x;
		model.y = backgroundPoint.y;
		model.width = tooltipSize.width;
		model.height = tooltipSize.height;

		// Point where the caret on the tooltip points to
		model.caretX = tooltipPosition.x;
		model.caretY = tooltipPosition.y;

		me._model = model;

		if (changed && opts.custom) {
			opts.custom.call(me, model);
		}

		return me;
	},

	drawCaret: function(tooltipPoint, size) {
		var ctx = this._chart.ctx;
		var vm = this._view;
		var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);

		ctx.lineTo(caretPosition.x1, caretPosition.y1);
		ctx.lineTo(caretPosition.x2, caretPosition.y2);
		ctx.lineTo(caretPosition.x3, caretPosition.y3);
	},
	getCaretPosition: function(tooltipPoint, size, vm) {
		var x1, x2, x3, y1, y2, y3;
		var caretSize = vm.caretSize;
		var cornerRadius = vm.cornerRadius;
		var xAlign = vm.xAlign;
		var yAlign = vm.yAlign;
		var ptX = tooltipPoint.x;
		var ptY = tooltipPoint.y;
		var width = size.width;
		var height = size.height;

		if (yAlign === 'center') {
			y2 = ptY + (height / 2);

			if (xAlign === 'left') {
				x1 = ptX;
				x2 = x1 - caretSize;
				x3 = x1;

				y1 = y2 + caretSize;
				y3 = y2 - caretSize;
			} else {
				x1 = ptX + width;
				x2 = x1 + caretSize;
				x3 = x1;

				y1 = y2 - caretSize;
				y3 = y2 + caretSize;
			}
		} else {
			if (xAlign === 'left') {
				x2 = ptX + cornerRadius + (caretSize);
				x1 = x2 - caretSize;
				x3 = x2 + caretSize;
			} else if (xAlign === 'right') {
				x2 = ptX + width - cornerRadius - caretSize;
				x1 = x2 - caretSize;
				x3 = x2 + caretSize;
			} else {
				x2 = vm.caretX;
				x1 = x2 - caretSize;
				x3 = x2 + caretSize;
			}
			if (yAlign === 'top') {
				y1 = ptY;
				y2 = y1 - caretSize;
				y3 = y1;
			} else {
				y1 = ptY + height;
				y2 = y1 + caretSize;
				y3 = y1;
				// invert drawing order
				var tmp = x3;
				x3 = x1;
				x1 = tmp;
			}
		}
		return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
	},

	drawTitle: function(pt, vm, ctx) {
		var title = vm.title;
		var length = title.length;
		var titleFontSize, titleSpacing, i;

		if (length) {
			var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width);

			pt.x = getAlignedX(vm, vm._titleAlign);

			ctx.textAlign = rtlHelper.textAlign(vm._titleAlign);
			ctx.textBaseline = 'middle';

			titleFontSize = vm.titleFontSize;
			titleSpacing = vm.titleSpacing;

			ctx.fillStyle = vm.titleFontColor;
			ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);

			for (i = 0; i < length; ++i) {
				ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFontSize / 2);
				pt.y += titleFontSize + titleSpacing; // Line Height and spacing

				if (i + 1 === length) {
					pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
				}
			}
		}
	},

	drawBody: function(pt, vm, ctx) {
		var bodyFontSize = vm.bodyFontSize;
		var bodySpacing = vm.bodySpacing;
		var bodyAlign = vm._bodyAlign;
		var body = vm.body;
		var drawColorBoxes = vm.displayColors;
		var xLinePadding = 0;
		var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0;

		var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width);

		var fillLineOfText = function(line) {
			ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyFontSize / 2);
			pt.y += bodyFontSize + bodySpacing;
		};

		var bodyItem, textColor, labelColors, lines, i, j, ilen, jlen;
		var bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign);

		ctx.textAlign = bodyAlign;
		ctx.textBaseline = 'middle';
		ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);

		pt.x = getAlignedX(vm, bodyAlignForCalculation);

		// Before body lines
		ctx.fillStyle = vm.bodyFontColor;
		helpers$1.each(vm.beforeBody, fillLineOfText);

		xLinePadding = drawColorBoxes && bodyAlignForCalculation !== 'right'
			? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2)
			: 0;

		// Draw body lines now
		for (i = 0, ilen = body.length; i < ilen; ++i) {
			bodyItem = body[i];
			textColor = vm.labelTextColors[i];
			labelColors = vm.labelColors[i];

			ctx.fillStyle = textColor;
			helpers$1.each(bodyItem.before, fillLineOfText);

			lines = bodyItem.lines;
			for (j = 0, jlen = lines.length; j < jlen; ++j) {
				// Draw Legend-like boxes if needed
				if (drawColorBoxes) {
					var rtlColorX = rtlHelper.x(colorX);

					// Fill a white rect so that colours merge nicely if the opacity is < 1
					ctx.fillStyle = vm.legendColorBackground;
					ctx.fillRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize);

					// Border
					ctx.lineWidth = 1;
					ctx.strokeStyle = labelColors.borderColor;
					ctx.strokeRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize);

					// Inner square
					ctx.fillStyle = labelColors.backgroundColor;
					ctx.fillRect(rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), bodyFontSize - 2), pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
					ctx.fillStyle = textColor;
				}

				fillLineOfText(lines[j]);
			}

			helpers$1.each(bodyItem.after, fillLineOfText);
		}

		// Reset back to 0 for after body
		xLinePadding = 0;

		// After body lines
		helpers$1.each(vm.afterBody, fillLineOfText);
		pt.y -= bodySpacing; // Remove last body spacing
	},

	drawFooter: function(pt, vm, ctx) {
		var footer = vm.footer;
		var length = footer.length;
		var footerFontSize, i;

		if (length) {
			var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width);

			pt.x = getAlignedX(vm, vm._footerAlign);
			pt.y += vm.footerMarginTop;

			ctx.textAlign = rtlHelper.textAlign(vm._footerAlign);
			ctx.textBaseline = 'middle';

			footerFontSize = vm.footerFontSize;

			ctx.fillStyle = vm.footerFontColor;
			ctx.font = helpers$1.fontString(footerFontSize, vm._footerFontStyle, vm._footerFontFamily);

			for (i = 0; i < length; ++i) {
				ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFontSize / 2);
				pt.y += footerFontSize + vm.footerSpacing;
			}
		}
	},

	drawBackground: function(pt, vm, ctx, tooltipSize) {
		ctx.fillStyle = vm.backgroundColor;
		ctx.strokeStyle = vm.borderColor;
		ctx.lineWidth = vm.borderWidth;
		var xAlign = vm.xAlign;
		var yAlign = vm.yAlign;
		var x = pt.x;
		var y = pt.y;
		var width = tooltipSize.width;
		var height = tooltipSize.height;
		var radius = vm.cornerRadius;

		ctx.beginPath();
		ctx.moveTo(x + radius, y);
		if (yAlign === 'top') {
			this.drawCaret(pt, tooltipSize);
		}
		ctx.lineTo(x + width - radius, y);
		ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
		if (yAlign === 'center' && xAlign === 'right') {
			this.drawCaret(pt, tooltipSize);
		}
		ctx.lineTo(x + width, y + height - radius);
		ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
		if (yAlign === 'bottom') {
			this.drawCaret(pt, tooltipSize);
		}
		ctx.lineTo(x + radius, y + height);
		ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
		if (yAlign === 'center' && xAlign === 'left') {
			this.drawCaret(pt, tooltipSize);
		}
		ctx.lineTo(x, y + radius);
		ctx.quadraticCurveTo(x, y, x + radius, y);
		ctx.closePath();

		ctx.fill();

		if (vm.borderWidth > 0) {
			ctx.stroke();
		}
	},

	draw: function() {
		var ctx = this._chart.ctx;
		var vm = this._view;

		if (vm.opacity === 0) {
			return;
		}

		var tooltipSize = {
			width: vm.width,
			height: vm.height
		};
		var pt = {
			x: vm.x,
			y: vm.y
		};

		// IE11/Edge does not like very small opacities, so snap to 0
		var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;

		// Truthy/falsey value for empty tooltip
		var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;

		if (this._options.enabled && hasTooltipContent) {
			ctx.save();
			ctx.globalAlpha = opacity;

			// Draw Background
			this.drawBackground(pt, vm, ctx, tooltipSize);

			// Draw Title, Body, and Footer
			pt.y += vm.yPadding;

			helpers$1.rtl.overrideTextDirection(ctx, vm.textDirection);

			// Titles
			this.drawTitle(pt, vm, ctx);

			// Body
			this.drawBody(pt, vm, ctx);

			// Footer
			this.drawFooter(pt, vm, ctx);

			helpers$1.rtl.restoreTextDirection(ctx, vm.textDirection);

			ctx.restore();
		}
	},

	/**
	 * Handle an event
	 * @private
	 * @param {IEvent} event - The event to handle
	 * @returns {boolean} true if the tooltip changed
	 */
	handleEvent: function(e) {
		var me = this;
		var options = me._options;
		var changed = false;

		me._lastActive = me._lastActive || [];

		// Find Active Elements for tooltips
		if (e.type === 'mouseout') {
			me._active = [];
		} else {
			me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
			if (options.reverse) {
				me._active.reverse();
			}
		}

		// Remember Last Actives
		changed = !helpers$1.arrayEquals(me._active, me._lastActive);

		// Only handle target event on tooltip change
		if (changed) {
			me._lastActive = me._active;

			if (options.enabled || options.custom) {
				me._eventPosition = {
					x: e.x,
					y: e.y
				};

				me.update(true);
				me.pivot();
			}
		}

		return changed;
	}
});

/**
 * @namespace Chart.Tooltip.positioners
 */
var positioners_1 = positioners;

var core_tooltip = exports$4;
core_tooltip.positioners = positioners_1;

var valueOrDefault$9 = helpers$1.valueOrDefault;

core_defaults._set('global', {
	elements: {},
	events: [
		'mousemove',
		'mouseout',
		'click',
		'touchstart',
		'touchmove'
	],
	hover: {
		onHover: null,
		mode: 'nearest',
		intersect: true,
		animationDuration: 400
	},
	onClick: null,
	maintainAspectRatio: true,
	responsive: true,
	responsiveAnimationDuration: 0
});

/**
 * Recursively merge the given config objects representing the `scales` option
 * by incorporating scale defaults in `xAxes` and `yAxes` array items, then
 * returns a deep copy of the result, thus doesn't alter inputs.
 */
function mergeScaleConfig(/* config objects ... */) {
	return helpers$1.merge(Object.create(null), [].slice.call(arguments), {
		merger: function(key, target, source, options) {
			if (key === 'xAxes' || key === 'yAxes') {
				var slen = source[key].length;
				var i, type, scale;

				if (!target[key]) {
					target[key] = [];
				}

				for (i = 0; i < slen; ++i) {
					scale = source[key][i];
					type = valueOrDefault$9(scale.type, key === 'xAxes' ? 'category' : 'linear');

					if (i >= target[key].length) {
						target[key].push({});
					}

					if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
						// new/untyped scale or type changed: let's apply the new defaults
						// then merge source scale to correctly overwrite the defaults.
						helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]);
					} else {
						// scales type are the same
						helpers$1.merge(target[key][i], scale);
					}
				}
			} else {
				helpers$1._merger(key, target, source, options);
			}
		}
	});
}

/**
 * Recursively merge the given config objects as the root options by handling
 * default scale options for the `scales` and `scale` properties, then returns
 * a deep copy of the result, thus doesn't alter inputs.
 */
function mergeConfig(/* config objects ... */) {
	return helpers$1.merge(Object.create(null), [].slice.call(arguments), {
		merger: function(key, target, source, options) {
			var tval = target[key] || Object.create(null);
			var sval = source[key];

			if (key === 'scales') {
				// scale config merging is complex. Add our own function here for that
				target[key] = mergeScaleConfig(tval, sval);
			} else if (key === 'scale') {
				// used in polar area & radar charts since there is only one scale
				target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]);
			} else {
				helpers$1._merger(key, target, source, options);
			}
		}
	});
}

function initConfig(config) {
	config = config || Object.create(null);

	// Do NOT use mergeConfig for the data object because this method merges arrays
	// and so would change references to labels and datasets, preventing data updates.
	var data = config.data = config.data || {};
	data.datasets = data.datasets || [];
	data.labels = data.labels || [];

	config.options = mergeConfig(
		core_defaults.global,
		core_defaults[config.type],
		config.options || {});

	return config;
}

function updateConfig(chart) {
	var newOptions = chart.options;

	helpers$1.each(chart.scales, function(scale) {
		core_layouts.removeBox(chart, scale);
	});

	newOptions = mergeConfig(
		core_defaults.global,
		core_defaults[chart.config.type],
		newOptions);

	chart.options = chart.config.options = newOptions;
	chart.ensureScalesHaveIDs();
	chart.buildOrUpdateScales();

	// Tooltip
	chart.tooltip._options = newOptions.tooltips;
	chart.tooltip.initialize();
}

function nextAvailableScaleId(axesOpts, prefix, index) {
	var id;
	var hasId = function(obj) {
		return obj.id === id;
	};

	do {
		id = prefix + index++;
	} while (helpers$1.findIndex(axesOpts, hasId) >= 0);

	return id;
}

function positionIsHorizontal(position) {
	return position === 'top' || position === 'bottom';
}

function compare2Level(l1, l2) {
	return function(a, b) {
		return a[l1] === b[l1]
			? a[l2] - b[l2]
			: a[l1] - b[l1];
	};
}

var Chart = function(item, config) {
	this.construct(item, config);
	return this;
};

helpers$1.extend(Chart.prototype, /** @lends Chart */ {
	/**
	 * @private
	 */
	construct: function(item, config) {
		var me = this;

		config = initConfig(config);

		var context = platform.acquireContext(item, config);
		var canvas = context && context.canvas;
		var height = canvas && canvas.height;
		var width = canvas && canvas.width;

		me.id = helpers$1.uid();
		me.ctx = context;
		me.canvas = canvas;
		me.config = config;
		me.width = width;
		me.height = height;
		me.aspectRatio = height ? width / height : null;
		me.options = config.options;
		me._bufferedRender = false;
		me._layers = [];

		/**
		 * Provided for backward compatibility, Chart and Chart.Controller have been merged,
		 * the "instance" still need to be defined since it might be called from plugins.
		 * @prop Chart#chart
		 * @deprecated since version 2.6.0
		 * @todo remove at version 3
		 * @private
		 */
		me.chart = me;
		me.controller = me; // chart.chart.controller #inception

		// Add the chart instance to the global namespace
		Chart.instances[me.id] = me;

		// Define alias to the config data: `chart.data === chart.config.data`
		Object.defineProperty(me, 'data', {
			get: function() {
				return me.config.data;
			},
			set: function(value) {
				me.config.data = value;
			}
		});

		if (!context || !canvas) {
			// The given item is not a compatible context2d element, let's return before finalizing
			// the chart initialization but after setting basic chart / controller properties that
			// can help to figure out that the chart is not valid (e.g chart.canvas !== null);
			// https://github.com/chartjs/Chart.js/issues/2807
			console.error("Failed to create chart: can't acquire context from the given item");
			return;
		}

		me.initialize();
		me.update();
	},

	/**
	 * @private
	 */
	initialize: function() {
		var me = this;

		// Before init plugin notification
		core_plugins.notify(me, 'beforeInit');

		helpers$1.retinaScale(me, me.options.devicePixelRatio);

		me.bindEvents();

		if (me.options.responsive) {
			// Initial resize before chart draws (must be silent to preserve initial animations).
			me.resize(true);
		}

		me.initToolTip();

		// After init plugin notification
		core_plugins.notify(me, 'afterInit');

		return me;
	},

	clear: function() {
		helpers$1.canvas.clear(this);
		return this;
	},

	stop: function() {
		// Stops any current animation loop occurring
		core_animations.cancelAnimation(this);
		return this;
	},

	resize: function(silent) {
		var me = this;
		var options = me.options;
		var canvas = me.canvas;
		var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;

		// the canvas render width and height will be casted to integers so make sure that
		// the canvas display style uses the same integer values to avoid blurring effect.

		// Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed
		var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas)));
		var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas)));

		if (me.width === newWidth && me.height === newHeight) {
			return;
		}

		canvas.width = me.width = newWidth;
		canvas.height = me.height = newHeight;
		canvas.style.width = newWidth + 'px';
		canvas.style.height = newHeight + 'px';

		helpers$1.retinaScale(me, options.devicePixelRatio);

		if (!silent) {
			// Notify any plugins about the resize
			var newSize = {width: newWidth, height: newHeight};
			core_plugins.notify(me, 'resize', [newSize]);

			// Notify of resize
			if (options.onResize) {
				options.onResize(me, newSize);
			}

			me.stop();
			me.update({
				duration: options.responsiveAnimationDuration
			});
		}
	},

	ensureScalesHaveIDs: function() {
		var options = this.options;
		var scalesOptions = options.scales || {};
		var scaleOptions = options.scale;

		helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) {
			if (!xAxisOptions.id) {
				xAxisOptions.id = nextAvailableScaleId(scalesOptions.xAxes, 'x-axis-', index);
			}
		});

		helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) {
			if (!yAxisOptions.id) {
				yAxisOptions.id = nextAvailableScaleId(scalesOptions.yAxes, 'y-axis-', index);
			}
		});

		if (scaleOptions) {
			scaleOptions.id = scaleOptions.id || 'scale';
		}
	},

	/**
	 * Builds a map of scale ID to scale object for future lookup.
	 */
	buildOrUpdateScales: function() {
		var me = this;
		var options = me.options;
		var scales = me.scales || {};
		var items = [];
		var updated = Object.keys(scales).reduce(function(obj, id) {
			obj[id] = false;
			return obj;
		}, {});

		if (options.scales) {
			items = items.concat(
				(options.scales.xAxes || []).map(function(xAxisOptions) {
					return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
				}),
				(options.scales.yAxes || []).map(function(yAxisOptions) {
					return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
				})
			);
		}

		if (options.scale) {
			items.push({
				options: options.scale,
				dtype: 'radialLinear',
				isDefault: true,
				dposition: 'chartArea'
			});
		}

		helpers$1.each(items, function(item) {
			var scaleOptions = item.options;
			var id = scaleOptions.id;
			var scaleType = valueOrDefault$9(scaleOptions.type, item.dtype);

			if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
				scaleOptions.position = item.dposition;
			}

			updated[id] = true;
			var scale = null;
			if (id in scales && scales[id].type === scaleType) {
				scale = scales[id];
				scale.options = scaleOptions;
				scale.ctx = me.ctx;
				scale.chart = me;
			} else {
				var scaleClass = core_scaleService.getScaleConstructor(scaleType);
				if (!scaleClass) {
					return;
				}
				scale = new scaleClass({
					id: id,
					type: scaleType,
					options: scaleOptions,
					ctx: me.ctx,
					chart: me
				});
				scales[scale.id] = scale;
			}

			scale.mergeTicksOptions();

			// TODO(SB): I think we should be able to remove this custom case (options.scale)
			// and consider it as a regular scale part of the "scales"" map only! This would
			// make the logic easier and remove some useless? custom code.
			if (item.isDefault) {
				me.scale = scale;
			}
		});
		// clear up discarded scales
		helpers$1.each(updated, function(hasUpdated, id) {
			if (!hasUpdated) {
				delete scales[id];
			}
		});

		me.scales = scales;

		core_scaleService.addScalesToLayout(this);
	},

	buildOrUpdateControllers: function() {
		var me = this;
		var newControllers = [];
		var datasets = me.data.datasets;
		var i, ilen;

		for (i = 0, ilen = datasets.length; i < ilen; i++) {
			var dataset = datasets[i];
			var meta = me.getDatasetMeta(i);
			var type = dataset.type || me.config.type;

			if (meta.type && meta.type !== type) {
				me.destroyDatasetMeta(i);
				meta = me.getDatasetMeta(i);
			}
			meta.type = type;
			meta.order = dataset.order || 0;
			meta.index = i;

			if (meta.controller) {
				meta.controller.updateIndex(i);
				meta.controller.linkScales();
			} else {
				var ControllerClass = controllers[meta.type];
				if (ControllerClass === undefined) {
					throw new Error('"' + meta.type + '" is not a chart type.');
				}

				meta.controller = new ControllerClass(me, i);
				newControllers.push(meta.controller);
			}
		}

		return newControllers;
	},

	/**
	 * Reset the elements of all datasets
	 * @private
	 */
	resetElements: function() {
		var me = this;
		helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
			me.getDatasetMeta(datasetIndex).controller.reset();
		}, me);
	},

	/**
	* Resets the chart back to it's state before the initial animation
	*/
	reset: function() {
		this.resetElements();
		this.tooltip.initialize();
	},

	update: function(config) {
		var me = this;
		var i, ilen;

		if (!config || typeof config !== 'object') {
			// backwards compatibility
			config = {
				duration: config,
				lazy: arguments[1]
			};
		}

		updateConfig(me);

		// plugins options references might have change, let's invalidate the cache
		// https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
		core_plugins._invalidate(me);

		if (core_plugins.notify(me, 'beforeUpdate') === false) {
			return;
		}

		// In case the entire data object changed
		me.tooltip._data = me.data;

		// Make sure dataset controllers are updated and new controllers are reset
		var newControllers = me.buildOrUpdateControllers();

		// Make sure all dataset controllers have correct meta data counts
		for (i = 0, ilen = me.data.datasets.length; i < ilen; i++) {
			me.getDatasetMeta(i).controller.buildOrUpdateElements();
		}

		me.updateLayout();

		// Can only reset the new controllers after the scales have been updated
		if (me.options.animation && me.options.animation.duration) {
			helpers$1.each(newControllers, function(controller) {
				controller.reset();
			});
		}

		me.updateDatasets();

		// Need to reset tooltip in case it is displayed with elements that are removed
		// after update.
		me.tooltip.initialize();

		// Last active contains items that were previously in the tooltip.
		// When we reset the tooltip, we need to clear it
		me.lastActive = [];

		// Do this before render so that any plugins that need final scale updates can use it
		core_plugins.notify(me, 'afterUpdate');

		me._layers.sort(compare2Level('z', '_idx'));

		if (me._bufferedRender) {
			me._bufferedRequest = {
				duration: config.duration,
				easing: config.easing,
				lazy: config.lazy
			};
		} else {
			me.render(config);
		}
	},

	/**
	 * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
	 * hook, in which case, plugins will not be called on `afterLayout`.
	 * @private
	 */
	updateLayout: function() {
		var me = this;

		if (core_plugins.notify(me, 'beforeLayout') === false) {
			return;
		}

		core_layouts.update(this, this.width, this.height);

		me._layers = [];
		helpers$1.each(me.boxes, function(box) {
			// _configure is called twice, once in core.scale.update and once here.
			// Here the boxes are fully updated and at their final positions.
			if (box._configure) {
				box._configure();
			}
			me._layers.push.apply(me._layers, box._layers());
		}, me);

		me._layers.forEach(function(item, index) {
			item._idx = index;
		});

		/**
		 * Provided for backward compatibility, use `afterLayout` instead.
		 * @method IPlugin#afterScaleUpdate
		 * @deprecated since version 2.5.0
		 * @todo remove at version 3
		 * @private
		 */
		core_plugins.notify(me, 'afterScaleUpdate');
		core_plugins.notify(me, 'afterLayout');
	},

	/**
	 * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
	 * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
	 * @private
	 */
	updateDatasets: function() {
		var me = this;

		if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) {
			return;
		}

		for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
			me.updateDataset(i);
		}

		core_plugins.notify(me, 'afterDatasetsUpdate');
	},

	/**
	 * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
	 * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
	 * @private
	 */
	updateDataset: function(index) {
		var me = this;
		var meta = me.getDatasetMeta(index);
		var args = {
			meta: meta,
			index: index
		};

		if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
			return;
		}

		meta.controller._update();

		core_plugins.notify(me, 'afterDatasetUpdate', [args]);
	},

	render: function(config) {
		var me = this;

		if (!config || typeof config !== 'object') {
			// backwards compatibility
			config = {
				duration: config,
				lazy: arguments[1]
			};
		}

		var animationOptions = me.options.animation;
		var duration = valueOrDefault$9(config.duration, animationOptions && animationOptions.duration);
		var lazy = config.lazy;

		if (core_plugins.notify(me, 'beforeRender') === false) {
			return;
		}

		var onComplete = function(animation) {
			core_plugins.notify(me, 'afterRender');
			helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me);
		};

		if (animationOptions && duration) {
			var animation = new core_animation({
				numSteps: duration / 16.66, // 60 fps
				easing: config.easing || animationOptions.easing,

				render: function(chart, animationObject) {
					var easingFunction = helpers$1.easing.effects[animationObject.easing];
					var currentStep = animationObject.currentStep;
					var stepDecimal = currentStep / animationObject.numSteps;

					chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
				},

				onAnimationProgress: animationOptions.onProgress,
				onAnimationComplete: onComplete
			});

			core_animations.addAnimation(me, animation, duration, lazy);
		} else {
			me.draw();

			// See https://github.com/chartjs/Chart.js/issues/3781
			onComplete(new core_animation({numSteps: 0, chart: me}));
		}

		return me;
	},

	draw: function(easingValue) {
		var me = this;
		var i, layers;

		me.clear();

		if (helpers$1.isNullOrUndef(easingValue)) {
			easingValue = 1;
		}

		me.transition(easingValue);

		if (me.width <= 0 || me.height <= 0) {
			return;
		}

		if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
			return;
		}

		// Because of plugin hooks (before/afterDatasetsDraw), datasets can't
		// currently be part of layers. Instead, we draw
		// layers <= 0 before(default, backward compat), and the rest after
		layers = me._layers;
		for (i = 0; i < layers.length && layers[i].z <= 0; ++i) {
			layers[i].draw(me.chartArea);
		}

		me.drawDatasets(easingValue);

		// Rest of layers
		for (; i < layers.length; ++i) {
			layers[i].draw(me.chartArea);
		}

		me._drawTooltip(easingValue);

		core_plugins.notify(me, 'afterDraw', [easingValue]);
	},

	/**
	 * @private
	 */
	transition: function(easingValue) {
		var me = this;

		for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
			if (me.isDatasetVisible(i)) {
				me.getDatasetMeta(i).controller.transition(easingValue);
			}
		}

		me.tooltip.transition(easingValue);
	},

	/**
	 * @private
	 */
	_getSortedDatasetMetas: function(filterVisible) {
		var me = this;
		var datasets = me.data.datasets || [];
		var result = [];
		var i, ilen;

		for (i = 0, ilen = datasets.length; i < ilen; ++i) {
			if (!filterVisible || me.isDatasetVisible(i)) {
				result.push(me.getDatasetMeta(i));
			}
		}

		result.sort(compare2Level('order', 'index'));

		return result;
	},

	/**
	 * @private
	 */
	_getSortedVisibleDatasetMetas: function() {
		return this._getSortedDatasetMetas(true);
	},

	/**
	 * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
	 * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
	 * @private
	 */
	drawDatasets: function(easingValue) {
		var me = this;
		var metasets, i;

		if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
			return;
		}

		metasets = me._getSortedVisibleDatasetMetas();
		for (i = metasets.length - 1; i >= 0; --i) {
			me.drawDataset(metasets[i], easingValue);
		}

		core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
	},

	/**
	 * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
	 * hook, in which case, plugins will not be called on `afterDatasetDraw`.
	 * @private
	 */
	drawDataset: function(meta, easingValue) {
		var me = this;
		var args = {
			meta: meta,
			index: meta.index,
			easingValue: easingValue
		};

		if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
			return;
		}

		meta.controller.draw(easingValue);

		core_plugins.notify(me, 'afterDatasetDraw', [args]);
	},

	/**
	 * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
	 * hook, in which case, plugins will not be called on `afterTooltipDraw`.
	 * @private
	 */
	_drawTooltip: function(easingValue) {
		var me = this;
		var tooltip = me.tooltip;
		var args = {
			tooltip: tooltip,
			easingValue: easingValue
		};

		if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
			return;
		}

		tooltip.draw();

		core_plugins.notify(me, 'afterTooltipDraw', [args]);
	},

	/**
	 * Get the single element that was clicked on
	 * @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
	 */
	getElementAtEvent: function(e) {
		return core_interaction.modes.single(this, e);
	},

	getElementsAtEvent: function(e) {
		return core_interaction.modes.label(this, e, {intersect: true});
	},

	getElementsAtXAxis: function(e) {
		return core_interaction.modes['x-axis'](this, e, {intersect: true});
	},

	getElementsAtEventForMode: function(e, mode, options) {
		var method = core_interaction.modes[mode];
		if (typeof method === 'function') {
			return method(this, e, options);
		}

		return [];
	},

	getDatasetAtEvent: function(e) {
		return core_interaction.modes.dataset(this, e, {intersect: true});
	},

	getDatasetMeta: function(datasetIndex) {
		var me = this;
		var dataset = me.data.datasets[datasetIndex];
		if (!dataset._meta) {
			dataset._meta = {};
		}

		var meta = dataset._meta[me.id];
		if (!meta) {
			meta = dataset._meta[me.id] = {
				type: null,
				data: [],
				dataset: null,
				controller: null,
				hidden: null,			// See isDatasetVisible() comment
				xAxisID: null,
				yAxisID: null,
				order: dataset.order || 0,
				index: datasetIndex
			};
		}

		return meta;
	},

	getVisibleDatasetCount: function() {
		var count = 0;
		for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
			if (this.isDatasetVisible(i)) {
				count++;
			}
		}
		return count;
	},

	isDatasetVisible: function(datasetIndex) {
		var meta = this.getDatasetMeta(datasetIndex);

		// meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
		// the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
		return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
	},

	generateLegend: function() {
		return this.options.legendCallback(this);
	},

	/**
	 * @private
	 */
	destroyDatasetMeta: function(datasetIndex) {
		var id = this.id;
		var dataset = this.data.datasets[datasetIndex];
		var meta = dataset._meta && dataset._meta[id];

		if (meta) {
			meta.controller.destroy();
			delete dataset._meta[id];
		}
	},

	destroy: function() {
		var me = this;
		var canvas = me.canvas;
		var i, ilen;

		me.stop();

		// dataset controllers need to cleanup associated data
		for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
			me.destroyDatasetMeta(i);
		}

		if (canvas) {
			me.unbindEvents();
			helpers$1.canvas.clear(me);
			platform.releaseContext(me.ctx);
			me.canvas = null;
			me.ctx = null;
		}

		core_plugins.notify(me, 'destroy');

		delete Chart.instances[me.id];
	},

	toBase64Image: function() {
		return this.canvas.toDataURL.apply(this.canvas, arguments);
	},

	initToolTip: function() {
		var me = this;
		me.tooltip = new core_tooltip({
			_chart: me,
			_chartInstance: me, // deprecated, backward compatibility
			_data: me.data,
			_options: me.options.tooltips
		}, me);
	},

	/**
	 * @private
	 */
	bindEvents: function() {
		var me = this;
		var listeners = me._listeners = {};
		var listener = function() {
			me.eventHandler.apply(me, arguments);
		};

		helpers$1.each(me.options.events, function(type) {
			platform.addEventListener(me, type, listener);
			listeners[type] = listener;
		});

		// Elements used to detect size change should not be injected for non responsive charts.
		// See https://github.com/chartjs/Chart.js/issues/2210
		if (me.options.responsive) {
			listener = function() {
				me.resize();
			};

			platform.addEventListener(me, 'resize', listener);
			listeners.resize = listener;
		}
	},

	/**
	 * @private
	 */
	unbindEvents: function() {
		var me = this;
		var listeners = me._listeners;
		if (!listeners) {
			return;
		}

		delete me._listeners;
		helpers$1.each(listeners, function(listener, type) {
			platform.removeEventListener(me, type, listener);
		});
	},

	updateHoverStyle: function(elements, mode, enabled) {
		var prefix = enabled ? 'set' : 'remove';
		var element, i, ilen;

		for (i = 0, ilen = elements.length; i < ilen; ++i) {
			element = elements[i];
			if (element) {
				this.getDatasetMeta(element._datasetIndex).controller[prefix + 'HoverStyle'](element);
			}
		}

		if (mode === 'dataset') {
			this.getDatasetMeta(elements[0]._datasetIndex).controller['_' + prefix + 'DatasetHoverStyle']();
		}
	},

	/**
	 * @private
	 */
	eventHandler: function(e) {
		var me = this;
		var tooltip = me.tooltip;

		if (core_plugins.notify(me, 'beforeEvent', [e]) === false) {
			return;
		}

		// Buffer any update calls so that renders do not occur
		me._bufferedRender = true;
		me._bufferedRequest = null;

		var changed = me.handleEvent(e);
		// for smooth tooltip animations issue #4989
		// the tooltip should be the source of change
		// Animation check workaround:
		// tooltip._start will be null when tooltip isn't animating
		if (tooltip) {
			changed = tooltip._start
				? tooltip.handleEvent(e)
				: changed | tooltip.handleEvent(e);
		}

		core_plugins.notify(me, 'afterEvent', [e]);

		var bufferedRequest = me._bufferedRequest;
		if (bufferedRequest) {
			// If we have an update that was triggered, we need to do a normal render
			me.render(bufferedRequest);
		} else if (changed && !me.animating) {
			// If entering, leaving, or changing elements, animate the change via pivot
			me.stop();

			// We only need to render at this point. Updating will cause scales to be
			// recomputed generating flicker & using more memory than necessary.
			me.render({
				duration: me.options.hover.animationDuration,
				lazy: true
			});
		}

		me._bufferedRender = false;
		me._bufferedRequest = null;

		return me;
	},

	/**
	 * Handle an event
	 * @private
	 * @param {IEvent} event the event to handle
	 * @return {boolean} true if the chart needs to re-render
	 */
	handleEvent: function(e) {
		var me = this;
		var options = me.options || {};
		var hoverOptions = options.hover;
		var changed = false;

		me.lastActive = me.lastActive || [];

		// Find Active Elements for hover and tooltips
		if (e.type === 'mouseout') {
			me.active = [];
		} else {
			me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
		}

		// Invoke onHover hook
		// Need to call with native event here to not break backwards compatibility
		helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);

		if (e.type === 'mouseup' || e.type === 'click') {
			if (options.onClick) {
				// Use e.native here for backwards compatibility
				options.onClick.call(me, e.native, me.active);
			}
		}

		// Remove styling for last active (even if it may still be active)
		if (me.lastActive.length) {
			me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
		}

		// Built in hover styling
		if (me.active.length && hoverOptions.mode) {
			me.updateHoverStyle(me.active, hoverOptions.mode, true);
		}

		changed = !helpers$1.arrayEquals(me.active, me.lastActive);

		// Remember Last Actives
		me.lastActive = me.active;

		return changed;
	}
});

/**
 * NOTE(SB) We actually don't use this container anymore but we need to keep it
 * for backward compatibility. Though, it can still be useful for plugins that
 * would need to work on multiple charts?!
 */
Chart.instances = {};

var core_controller = Chart;

// DEPRECATIONS

/**
 * Provided for backward compatibility, use Chart instead.
 * @class Chart.Controller
 * @deprecated since version 2.6
 * @todo remove at version 3
 * @private
 */
Chart.Controller = Chart;

/**
 * Provided for backward compatibility, not available anymore.
 * @namespace Chart
 * @deprecated since version 2.8
 * @todo remove at version 3
 * @private
 */
Chart.types = {};

/**
 * Provided for backward compatibility, not available anymore.
 * @namespace Chart.helpers.configMerge
 * @deprecated since version 2.8.0
 * @todo remove at version 3
 * @private
 */
helpers$1.configMerge = mergeConfig;

/**
 * Provided for backward compatibility, not available anymore.
 * @namespace Chart.helpers.scaleMerge
 * @deprecated since version 2.8.0
 * @todo remove at version 3
 * @private
 */
helpers$1.scaleMerge = mergeScaleConfig;

var core_helpers = function() {

	// -- Basic js utility methods

	helpers$1.where = function(collection, filterCallback) {
		if (helpers$1.isArray(collection) && Array.prototype.filter) {
			return collection.filter(filterCallback);
		}
		var filtered = [];

		helpers$1.each(collection, function(item) {
			if (filterCallback(item)) {
				filtered.push(item);
			}
		});

		return filtered;
	};
	helpers$1.findIndex = Array.prototype.findIndex ?
		function(array, callback, scope) {
			return array.findIndex(callback, scope);
		} :
		function(array, callback, scope) {
			scope = scope === undefined ? array : scope;
			for (var i = 0, ilen = array.length; i < ilen; ++i) {
				if (callback.call(scope, array[i], i, array)) {
					return i;
				}
			}
			return -1;
		};
	helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
		// Default to start of the array
		if (helpers$1.isNullOrUndef(startIndex)) {
			startIndex = -1;
		}
		for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
			var currentItem = arrayToSearch[i];
			if (filterCallback(currentItem)) {
				return currentItem;
			}
		}
	};
	helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
		// Default to end of the array
		if (helpers$1.isNullOrUndef(startIndex)) {
			startIndex = arrayToSearch.length;
		}
		for (var i = startIndex - 1; i >= 0; i--) {
			var currentItem = arrayToSearch[i];
			if (filterCallback(currentItem)) {
				return currentItem;
			}
		}
	};

	// -- Math methods
	helpers$1.isNumber = function(n) {
		return !isNaN(parseFloat(n)) && isFinite(n);
	};
	helpers$1.almostEquals = function(x, y, epsilon) {
		return Math.abs(x - y) < epsilon;
	};
	helpers$1.almostWhole = function(x, epsilon) {
		var rounded = Math.round(x);
		return ((rounded - epsilon) <= x) && ((rounded + epsilon) >= x);
	};
	helpers$1.max = function(array) {
		return array.reduce(function(max, value) {
			if (!isNaN(value)) {
				return Math.max(max, value);
			}
			return max;
		}, Number.NEGATIVE_INFINITY);
	};
	helpers$1.min = function(array) {
		return array.reduce(function(min, value) {
			if (!isNaN(value)) {
				return Math.min(min, value);
			}
			return min;
		}, Number.POSITIVE_INFINITY);
	};
	helpers$1.sign = Math.sign ?
		function(x) {
			return Math.sign(x);
		} :
		function(x) {
			x = +x; // convert to a number
			if (x === 0 || isNaN(x)) {
				return x;
			}
			return x > 0 ? 1 : -1;
		};
	helpers$1.toRadians = function(degrees) {
		return degrees * (Math.PI / 180);
	};
	helpers$1.toDegrees = function(radians) {
		return radians * (180 / Math.PI);
	};

	/**
	 * Returns the number of decimal places
	 * i.e. the number of digits after the decimal point, of the value of this Number.
	 * @param {number} x - A number.
	 * @returns {number} The number of decimal places.
	 * @private
	 */
	helpers$1._decimalPlaces = function(x) {
		if (!helpers$1.isFinite(x)) {
			return;
		}
		var e = 1;
		var p = 0;
		while (Math.round(x * e) / e !== x) {
			e *= 10;
			p++;
		}
		return p;
	};

	// Gets the angle from vertical upright to the point about a centre.
	helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) {
		var distanceFromXCenter = anglePoint.x - centrePoint.x;
		var distanceFromYCenter = anglePoint.y - centrePoint.y;
		var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);

		var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);

		if (angle < (-0.5 * Math.PI)) {
			angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
		}

		return {
			angle: angle,
			distance: radialDistanceFromCenter
		};
	};
	helpers$1.distanceBetweenPoints = function(pt1, pt2) {
		return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
	};

	/**
	 * Provided for backward compatibility, not available anymore
	 * @function Chart.helpers.aliasPixel
	 * @deprecated since version 2.8.0
	 * @todo remove at version 3
	 */
	helpers$1.aliasPixel = function(pixelWidth) {
		return (pixelWidth % 2 === 0) ? 0 : 0.5;
	};

	/**
	 * Returns the aligned pixel value to avoid anti-aliasing blur
	 * @param {Chart} chart - The chart instance.
	 * @param {number} pixel - A pixel value.
	 * @param {number} width - The width of the element.
	 * @returns {number} The aligned pixel value.
	 * @private
	 */
	helpers$1._alignPixel = function(chart, pixel, width) {
		var devicePixelRatio = chart.currentDevicePixelRatio;
		var halfWidth = width / 2;
		return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
	};

	helpers$1.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
		// Props to Rob Spencer at scaled innovation for his post on splining between points
		// http://scaledinnovation.com/analytics/splines/aboutSplines.html

		// This function must also respect "skipped" points

		var previous = firstPoint.skip ? middlePoint : firstPoint;
		var current = middlePoint;
		var next = afterPoint.skip ? middlePoint : afterPoint;

		var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
		var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));

		var s01 = d01 / (d01 + d12);
		var s12 = d12 / (d01 + d12);

		// If all points are the same, s01 & s02 will be inf
		s01 = isNaN(s01) ? 0 : s01;
		s12 = isNaN(s12) ? 0 : s12;

		var fa = t * s01; // scaling factor for triangle Ta
		var fb = t * s12;

		return {
			previous: {
				x: current.x - fa * (next.x - previous.x),
				y: current.y - fa * (next.y - previous.y)
			},
			next: {
				x: current.x + fb * (next.x - previous.x),
				y: current.y + fb * (next.y - previous.y)
			}
		};
	};
	helpers$1.EPSILON = Number.EPSILON || 1e-14;
	helpers$1.splineCurveMonotone = function(points) {
		// This function calculates Bézier control points in a similar way than |splineCurve|,
		// but preserves monotonicity of the provided data and ensures no local extremums are added
		// between the dataset discrete points due to the interpolation.
		// See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation

		var pointsWithTangents = (points || []).map(function(point) {
			return {
				model: point._model,
				deltaK: 0,
				mK: 0
			};
		});

		// Calculate slopes (deltaK) and initialize tangents (mK)
		var pointsLen = pointsWithTangents.length;
		var i, pointBefore, pointCurrent, pointAfter;
		for (i = 0; i < pointsLen; ++i) {
			pointCurrent = pointsWithTangents[i];
			if (pointCurrent.model.skip) {
				continue;
			}

			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
			if (pointAfter && !pointAfter.model.skip) {
				var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);

				// In the case of two points that appear at the same x pixel, slopeDeltaX is 0
				pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
			}

			if (!pointBefore || pointBefore.model.skip) {
				pointCurrent.mK = pointCurrent.deltaK;
			} else if (!pointAfter || pointAfter.model.skip) {
				pointCurrent.mK = pointBefore.deltaK;
			} else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
				pointCurrent.mK = 0;
			} else {
				pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
			}
		}

		// Adjust tangents to ensure monotonic properties
		var alphaK, betaK, tauK, squaredMagnitude;
		for (i = 0; i < pointsLen - 1; ++i) {
			pointCurrent = pointsWithTangents[i];
			pointAfter = pointsWithTangents[i + 1];
			if (pointCurrent.model.skip || pointAfter.model.skip) {
				continue;
			}

			if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
				pointCurrent.mK = pointAfter.mK = 0;
				continue;
			}

			alphaK = pointCurrent.mK / pointCurrent.deltaK;
			betaK = pointAfter.mK / pointCurrent.deltaK;
			squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
			if (squaredMagnitude <= 9) {
				continue;
			}

			tauK = 3 / Math.sqrt(squaredMagnitude);
			pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
			pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
		}

		// Compute control points
		var deltaX;
		for (i = 0; i < pointsLen; ++i) {
			pointCurrent = pointsWithTangents[i];
			if (pointCurrent.model.skip) {
				continue;
			}

			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
			if (pointBefore && !pointBefore.model.skip) {
				deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
				pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
				pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
			}
			if (pointAfter && !pointAfter.model.skip) {
				deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
				pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
				pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
			}
		}
	};
	helpers$1.nextItem = function(collection, index, loop) {
		if (loop) {
			return index >= collection.length - 1 ? collection[0] : collection[index + 1];
		}
		return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
	};
	helpers$1.previousItem = function(collection, index, loop) {
		if (loop) {
			return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
		}
		return index <= 0 ? collection[0] : collection[index - 1];
	};
	// Implementation of the nice number algorithm used in determining where axis labels will go
	helpers$1.niceNum = function(range, round) {
		var exponent = Math.floor(helpers$1.log10(range));
		var fraction = range / Math.pow(10, exponent);
		var niceFraction;

		if (round) {
			if (fraction < 1.5) {
				niceFraction = 1;
			} else if (fraction < 3) {
				niceFraction = 2;
			} else if (fraction < 7) {
				niceFraction = 5;
			} else {
				niceFraction = 10;
			}
		} else if (fraction <= 1.0) {
			niceFraction = 1;
		} else if (fraction <= 2) {
			niceFraction = 2;
		} else if (fraction <= 5) {
			niceFraction = 5;
		} else {
			niceFraction = 10;
		}

		return niceFraction * Math.pow(10, exponent);
	};
	// Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
	helpers$1.requestAnimFrame = (function() {
		if (typeof window === 'undefined') {
			return function(callback) {
				callback();
			};
		}
		return window.requestAnimationFrame ||
			window.webkitRequestAnimationFrame ||
			window.mozRequestAnimationFrame ||
			window.oRequestAnimationFrame ||
			window.msRequestAnimationFrame ||
			function(callback) {
				return window.setTimeout(callback, 1000 / 60);
			};
	}());
	// -- DOM methods
	helpers$1.getRelativePosition = function(evt, chart) {
		var mouseX, mouseY;
		var e = evt.originalEvent || evt;
		var canvas = evt.target || evt.srcElement;
		var boundingRect = canvas.getBoundingClientRect();

		var touches = e.touches;
		if (touches && touches.length > 0) {
			mouseX = touches[0].clientX;
			mouseY = touches[0].clientY;

		} else {
			mouseX = e.clientX;
			mouseY = e.clientY;
		}

		// Scale mouse coordinates into canvas coordinates
		// by following the pattern laid out by 'jerryj' in the comments of
		// https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
		var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left'));
		var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top'));
		var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right'));
		var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom'));
		var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
		var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;

		// We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
		// the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
		mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
		mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);

		return {
			x: mouseX,
			y: mouseY
		};

	};

	// Private helper function to convert max-width/max-height values that may be percentages into a number
	function parseMaxStyle(styleValue, node, parentProperty) {
		var valueInPixels;
		if (typeof styleValue === 'string') {
			valueInPixels = parseInt(styleValue, 10);

			if (styleValue.indexOf('%') !== -1) {
				// percentage * size in dimension
				valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
			}
		} else {
			valueInPixels = styleValue;
		}

		return valueInPixels;
	}

	/**
	 * Returns if the given value contains an effective constraint.
	 * @private
	 */
	function isConstrainedValue(value) {
		return value !== undefined && value !== null && value !== 'none';
	}

	/**
	 * Returns the max width or height of the given DOM node in a cross-browser compatible fashion
	 * @param {HTMLElement} domNode - the node to check the constraint on
	 * @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height')
	 * @param {string} percentageProperty - property of parent to use when calculating width as a percentage
	 * @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser}
	 */
	function getConstraintDimension(domNode, maxStyle, percentageProperty) {
		var view = document.defaultView;
		var parentNode = helpers$1._getParentNode(domNode);
		var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
		var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
		var hasCNode = isConstrainedValue(constrainedNode);
		var hasCContainer = isConstrainedValue(constrainedContainer);
		var infinity = Number.POSITIVE_INFINITY;

		if (hasCNode || hasCContainer) {
			return Math.min(
				hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
				hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
		}

		return 'none';
	}
	// returns Number or undefined if no constraint
	helpers$1.getConstraintWidth = function(domNode) {
		return getConstraintDimension(domNode, 'max-width', 'clientWidth');
	};
	// returns Number or undefined if no constraint
	helpers$1.getConstraintHeight = function(domNode) {
		return getConstraintDimension(domNode, 'max-height', 'clientHeight');
	};
	/**
	 * @private
 	 */
	helpers$1._calculatePadding = function(container, padding, parentDimension) {
		padding = helpers$1.getStyle(container, padding);

		return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10);
	};
	/**
	 * @private
	 */
	helpers$1._getParentNode = function(domNode) {
		var parent = domNode.parentNode;
		if (parent && parent.toString() === '[object ShadowRoot]') {
			parent = parent.host;
		}
		return parent;
	};
	helpers$1.getMaximumWidth = function(domNode) {
		var container = helpers$1._getParentNode(domNode);
		if (!container) {
			return domNode.clientWidth;
		}

		var clientWidth = container.clientWidth;
		var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth);
		var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth);

		var w = clientWidth - paddingLeft - paddingRight;
		var cw = helpers$1.getConstraintWidth(domNode);
		return isNaN(cw) ? w : Math.min(w, cw);
	};
	helpers$1.getMaximumHeight = function(domNode) {
		var container = helpers$1._getParentNode(domNode);
		if (!container) {
			return domNode.clientHeight;
		}

		var clientHeight = container.clientHeight;
		var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight);
		var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight);

		var h = clientHeight - paddingTop - paddingBottom;
		var ch = helpers$1.getConstraintHeight(domNode);
		return isNaN(ch) ? h : Math.min(h, ch);
	};
	helpers$1.getStyle = function(el, property) {
		return el.currentStyle ?
			el.currentStyle[property] :
			document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
	};
	helpers$1.retinaScale = function(chart, forceRatio) {
		var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1;
		if (pixelRatio === 1) {
			return;
		}

		var canvas = chart.canvas;
		var height = chart.height;
		var width = chart.width;

		canvas.height = height * pixelRatio;
		canvas.width = width * pixelRatio;
		chart.ctx.scale(pixelRatio, pixelRatio);

		// If no style has been set on the canvas, the render size is used as display size,
		// making the chart visually bigger, so let's enforce it to the "correct" values.
		// See https://github.com/chartjs/Chart.js/issues/3575
		if (!canvas.style.height && !canvas.style.width) {
			canvas.style.height = height + 'px';
			canvas.style.width = width + 'px';
		}
	};
	// -- Canvas methods
	helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) {
		return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
	};
	helpers$1.longestText = function(ctx, font, arrayOfThings, cache) {
		cache = cache || {};
		var data = cache.data = cache.data || {};
		var gc = cache.garbageCollect = cache.garbageCollect || [];

		if (cache.font !== font) {
			data = cache.data = {};
			gc = cache.garbageCollect = [];
			cache.font = font;
		}

		ctx.font = font;
		var longest = 0;
		var ilen = arrayOfThings.length;
		var i, j, jlen, thing, nestedThing;
		for (i = 0; i < ilen; i++) {
			thing = arrayOfThings[i];

			// Undefined strings and arrays should not be measured
			if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) {
				longest = helpers$1.measureText(ctx, data, gc, longest, thing);
			} else if (helpers$1.isArray(thing)) {
				// if it is an array lets measure each element
				// to do maybe simplify this function a bit so we can do this more recursively?
				for (j = 0, jlen = thing.length; j < jlen; j++) {
					nestedThing = thing[j];
					// Undefined strings and arrays should not be measured
					if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) {
						longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing);
					}
				}
			}
		}

		var gcLen = gc.length / 2;
		if (gcLen > arrayOfThings.length) {
			for (i = 0; i < gcLen; i++) {
				delete data[gc[i]];
			}
			gc.splice(0, gcLen);
		}
		return longest;
	};
	helpers$1.measureText = function(ctx, data, gc, longest, string) {
		var textWidth = data[string];
		if (!textWidth) {
			textWidth = data[string] = ctx.measureText(string).width;
			gc.push(string);
		}
		if (textWidth > longest) {
			longest = textWidth;
		}
		return longest;
	};

	/**
	 * @deprecated
	 */
	helpers$1.numberOfLabelLines = function(arrayOfThings) {
		var numberOfLines = 1;
		helpers$1.each(arrayOfThings, function(thing) {
			if (helpers$1.isArray(thing)) {
				if (thing.length > numberOfLines) {
					numberOfLines = thing.length;
				}
			}
		});
		return numberOfLines;
	};

	helpers$1.color = !chartjsColor ?
		function(value) {
			console.error('Color.js not found!');
			return value;
		} :
		function(value) {
			/* global CanvasGradient */
			if (value instanceof CanvasGradient) {
				value = core_defaults.global.defaultColor;
			}

			return chartjsColor(value);
		};

	helpers$1.getHoverColor = function(colorValue) {
		/* global CanvasPattern */
		return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ?
			colorValue :
			helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString();
	};
};

function abstract() {
	throw new Error(
		'This method is not implemented: either no adapter can ' +
		'be found or an incomplete integration was provided.'
	);
}

/**
 * Date adapter (current used by the time scale)
 * @namespace Chart._adapters._date
 * @memberof Chart._adapters
 * @private
 */

/**
 * Currently supported unit string values.
 * @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')}
 * @memberof Chart._adapters._date
 * @name Unit
 */

/**
 * @class
 */
function DateAdapter(options) {
	this.options = options || {};
}

helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ {
	/**
	 * Returns a map of time formats for the supported formatting units defined
	 * in Unit as well as 'datetime' representing a detailed date/time string.
	 * @returns {{string: string}}
	 */
	formats: abstract,

	/**
	 * Parses the given `value` and return the associated timestamp.
	 * @param {any} value - the value to parse (usually comes from the data)
	 * @param {string} [format] - the expected data format
	 * @returns {(number|null)}
	 * @function
	 */
	parse: abstract,

	/**
	 * Returns the formatted date in the specified `format` for a given `timestamp`.
	 * @param {number} timestamp - the timestamp to format
	 * @param {string} format - the date/time token
	 * @return {string}
	 * @function
	 */
	format: abstract,

	/**
	 * Adds the specified `amount` of `unit` to the given `timestamp`.
	 * @param {number} timestamp - the input timestamp
	 * @param {number} amount - the amount to add
	 * @param {Unit} unit - the unit as string
	 * @return {number}
	 * @function
	 */
	add: abstract,

	/**
	 * Returns the number of `unit` between the given timestamps.
	 * @param {number} max - the input timestamp (reference)
	 * @param {number} min - the timestamp to substract
	 * @param {Unit} unit - the unit as string
	 * @return {number}
	 * @function
	 */
	diff: abstract,

	/**
	 * Returns start of `unit` for the given `timestamp`.
	 * @param {number} timestamp - the input timestamp
	 * @param {Unit} unit - the unit as string
	 * @param {number} [weekday] - the ISO day of the week with 1 being Monday
	 * and 7 being Sunday (only needed if param *unit* is `isoWeek`).
	 * @function
	 */
	startOf: abstract,

	/**
	 * Returns end of `unit` for the given `timestamp`.
	 * @param {number} timestamp - the input timestamp
	 * @param {Unit} unit - the unit as string
	 * @function
	 */
	endOf: abstract,

	// DEPRECATIONS

	/**
	 * Provided for backward compatibility for scale.getValueForPixel(),
	 * this method should be overridden only by the moment adapter.
	 * @deprecated since version 2.8.0
	 * @todo remove at version 3
	 * @private
	 */
	_create: function(value) {
		return value;
	}
});

DateAdapter.override = function(members) {
	helpers$1.extend(DateAdapter.prototype, members);
};

var _date = DateAdapter;

var core_adapters = {
	_date: _date
};

/**
 * Namespace to hold static tick generation functions
 * @namespace Chart.Ticks
 */
var core_ticks = {
	/**
	 * Namespace to hold formatters for different types of ticks
	 * @namespace Chart.Ticks.formatters
	 */
	formatters: {
		/**
		 * Formatter for value labels
		 * @method Chart.Ticks.formatters.values
		 * @param value the value to display
		 * @return {string|string[]} the label to display
		 */
		values: function(value) {
			return helpers$1.isArray(value) ? value : '' + value;
		},

		/**
		 * Formatter for linear numeric ticks
		 * @method Chart.Ticks.formatters.linear
		 * @param tickValue {number} the value to be formatted
		 * @param index {number} the position of the tickValue parameter in the ticks array
		 * @param ticks {number[]} the list of ticks being converted
		 * @return {string} string representation of the tickValue parameter
		 */
		linear: function(tickValue, index, ticks) {
			// If we have lots of ticks, don't use the ones
			var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];

			// If we have a number like 2.5 as the delta, figure out how many decimal places we need
			if (Math.abs(delta) > 1) {
				if (tickValue !== Math.floor(tickValue)) {
					// not an integer
					delta = tickValue - Math.floor(tickValue);
				}
			}

			var logDelta = helpers$1.log10(Math.abs(delta));
			var tickString = '';

			if (tickValue !== 0) {
				var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1]));
				if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation
					var logTick = helpers$1.log10(Math.abs(tickValue));
					var numExponential = Math.floor(logTick) - Math.floor(logDelta);
					numExponential = Math.max(Math.min(numExponential, 20), 0);
					tickString = tickValue.toExponential(numExponential);
				} else {
					var numDecimal = -1 * Math.floor(logDelta);
					numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
					tickString = tickValue.toFixed(numDecimal);
				}
			} else {
				tickString = '0'; // never show decimal places for 0
			}

			return tickString;
		},

		logarithmic: function(tickValue, index, ticks) {
			var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue))));

			if (tickValue === 0) {
				return '0';
			} else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
				return tickValue.toExponential();
			}
			return '';
		}
	}
};

var isArray = helpers$1.isArray;
var isNullOrUndef = helpers$1.isNullOrUndef;
var valueOrDefault$a = helpers$1.valueOrDefault;
var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault;

core_defaults._set('scale', {
	display: true,
	position: 'left',
	offset: false,

	// grid line settings
	gridLines: {
		display: true,
		color: 'rgba(0,0,0,0.1)',
		lineWidth: 1,
		drawBorder: true,
		drawOnChartArea: true,
		drawTicks: true,
		tickMarkLength: 10,
		zeroLineWidth: 1,
		zeroLineColor: 'rgba(0,0,0,0.25)',
		zeroLineBorderDash: [],
		zeroLineBorderDashOffset: 0.0,
		offsetGridLines: false,
		borderDash: [],
		borderDashOffset: 0.0
	},

	// scale label
	scaleLabel: {
		// display property
		display: false,

		// actual label
		labelString: '',

		// top/bottom padding
		padding: {
			top: 4,
			bottom: 4
		}
	},

	// label settings
	ticks: {
		beginAtZero: false,
		minRotation: 0,
		maxRotation: 50,
		mirror: false,
		padding: 0,
		reverse: false,
		display: true,
		autoSkip: true,
		autoSkipPadding: 0,
		labelOffset: 0,
		// We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
		callback: core_ticks.formatters.values,
		minor: {},
		major: {}
	}
});

/** Returns a new array containing numItems from arr */
function sample(arr, numItems) {
	var result = [];
	var increment = arr.length / numItems;
	var i = 0;
	var len = arr.length;

	for (; i < len; i += increment) {
		result.push(arr[Math.floor(i)]);
	}
	return result;
}

function getPixelForGridLine(scale, index, offsetGridLines) {
	var length = scale.getTicks().length;
	var validIndex = Math.min(index, length - 1);
	var lineValue = scale.getPixelForTick(validIndex);
	var start = scale._startPixel;
	var end = scale._endPixel;
	var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.
	var offset;

	if (offsetGridLines) {
		if (length === 1) {
			offset = Math.max(lineValue - start, end - lineValue);
		} else if (index === 0) {
			offset = (scale.getPixelForTick(1) - lineValue) / 2;
		} else {
			offset = (lineValue - scale.getPixelForTick(validIndex - 1)) / 2;
		}
		lineValue += validIndex < index ? offset : -offset;

		// Return undefined if the pixel is out of the range
		if (lineValue < start - epsilon || lineValue > end + epsilon) {
			return;
		}
	}
	return lineValue;
}

function garbageCollect(caches, length) {
	helpers$1.each(caches, function(cache) {
		var gc = cache.gc;
		var gcLen = gc.length / 2;
		var i;
		if (gcLen > length) {
			for (i = 0; i < gcLen; ++i) {
				delete cache.data[gc[i]];
			}
			gc.splice(0, gcLen);
		}
	});
}

/**
 * Returns {width, height, offset} objects for the first, last, widest, highest tick
 * labels where offset indicates the anchor point offset from the top in pixels.
 */
function computeLabelSizes(ctx, tickFonts, ticks, caches) {
	var length = ticks.length;
	var widths = [];
	var heights = [];
	var offsets = [];
	var widestLabelSize = 0;
	var highestLabelSize = 0;
	var i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel, widest, highest;

	for (i = 0; i < length; ++i) {
		label = ticks[i].label;
		tickFont = ticks[i].major ? tickFonts.major : tickFonts.minor;
		ctx.font = fontString = tickFont.string;
		cache = caches[fontString] = caches[fontString] || {data: {}, gc: []};
		lineHeight = tickFont.lineHeight;
		width = height = 0;
		// Undefined labels and arrays should not be measured
		if (!isNullOrUndef(label) && !isArray(label)) {
			width = helpers$1.measureText(ctx, cache.data, cache.gc, width, label);
			height = lineHeight;
		} else if (isArray(label)) {
			// if it is an array let's measure each element
			for (j = 0, jlen = label.length; j < jlen; ++j) {
				nestedLabel = label[j];
				// Undefined labels and arrays should not be measured
				if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) {
					width = helpers$1.measureText(ctx, cache.data, cache.gc, width, nestedLabel);
					height += lineHeight;
				}
			}
		}
		widths.push(width);
		heights.push(height);
		offsets.push(lineHeight / 2);
		widestLabelSize = Math.max(width, widestLabelSize);
		highestLabelSize = Math.max(height, highestLabelSize);
	}
	garbageCollect(caches, length);

	widest = widths.indexOf(widestLabelSize);
	highest = heights.indexOf(highestLabelSize);

	function valueAt(idx) {
		return {
			width: widths[idx] || 0,
			height: heights[idx] || 0,
			offset: offsets[idx] || 0
		};
	}

	return {
		first: valueAt(0),
		last: valueAt(length - 1),
		widest: valueAt(widest),
		highest: valueAt(highest)
	};
}

function getTickMarkLength(options) {
	return options.drawTicks ? options.tickMarkLength : 0;
}

function getScaleLabelHeight(options) {
	var font, padding;

	if (!options.display) {
		return 0;
	}

	font = helpers$1.options._parseFont(options);
	padding = helpers$1.options.toPadding(options.padding);

	return font.lineHeight + padding.height;
}

function parseFontOptions(options, nestedOpts) {
	return helpers$1.extend(helpers$1.options._parseFont({
		fontFamily: valueOrDefault$a(nestedOpts.fontFamily, options.fontFamily),
		fontSize: valueOrDefault$a(nestedOpts.fontSize, options.fontSize),
		fontStyle: valueOrDefault$a(nestedOpts.fontStyle, options.fontStyle),
		lineHeight: valueOrDefault$a(nestedOpts.lineHeight, options.lineHeight)
	}), {
		color: helpers$1.options.resolve([nestedOpts.fontColor, options.fontColor, core_defaults.global.defaultFontColor])
	});
}

function parseTickFontOptions(options) {
	var minor = parseFontOptions(options, options.minor);
	var major = options.major.enabled ? parseFontOptions(options, options.major) : minor;

	return {minor: minor, major: major};
}

function nonSkipped(ticksToFilter) {
	var filtered = [];
	var item, index, len;
	for (index = 0, len = ticksToFilter.length; index < len; ++index) {
		item = ticksToFilter[index];
		if (typeof item._index !== 'undefined') {
			filtered.push(item);
		}
	}
	return filtered;
}

function getEvenSpacing(arr) {
	var len = arr.length;
	var i, diff;

	if (len < 2) {
		return false;
	}

	for (diff = arr[0], i = 1; i < len; ++i) {
		if (arr[i] - arr[i - 1] !== diff) {
			return false;
		}
	}
	return diff;
}

function calculateSpacing(majorIndices, ticks, axisLength, ticksLimit) {
	var evenMajorSpacing = getEvenSpacing(majorIndices);
	var spacing = (ticks.length - 1) / ticksLimit;
	var factors, factor, i, ilen;

	// If the major ticks are evenly spaced apart, place the minor ticks
	// so that they divide the major ticks into even chunks
	if (!evenMajorSpacing) {
		return Math.max(spacing, 1);
	}

	factors = helpers$1.math._factorize(evenMajorSpacing);
	for (i = 0, ilen = factors.length - 1; i < ilen; i++) {
		factor = factors[i];
		if (factor > spacing) {
			return factor;
		}
	}
	return Math.max(spacing, 1);
}

function getMajorIndices(ticks) {
	var result = [];
	var i, ilen;
	for (i = 0, ilen = ticks.length; i < ilen; i++) {
		if (ticks[i].major) {
			result.push(i);
		}
	}
	return result;
}

function skipMajors(ticks, majorIndices, spacing) {
	var count = 0;
	var next = majorIndices[0];
	var i, tick;

	spacing = Math.ceil(spacing);
	for (i = 0; i < ticks.length; i++) {
		tick = ticks[i];
		if (i === next) {
			tick._index = i;
			count++;
			next = majorIndices[count * spacing];
		} else {
			delete tick.label;
		}
	}
}

function skip(ticks, spacing, majorStart, majorEnd) {
	var start = valueOrDefault$a(majorStart, 0);
	var end = Math.min(valueOrDefault$a(majorEnd, ticks.length), ticks.length);
	var count = 0;
	var length, i, tick, next;

	spacing = Math.ceil(spacing);
	if (majorEnd) {
		length = majorEnd - majorStart;
		spacing = length / Math.floor(length / spacing);
	}

	next = start;

	while (next < 0) {
		count++;
		next = Math.round(start + count * spacing);
	}

	for (i = Math.max(start, 0); i < end; i++) {
		tick = ticks[i];
		if (i === next) {
			tick._index = i;
			count++;
			next = Math.round(start + count * spacing);
		} else {
			delete tick.label;
		}
	}
}

var Scale = core_element.extend({

	zeroLineIndex: 0,

	/**
	 * Get the padding needed for the scale
	 * @method getPadding
	 * @private
	 * @returns {Padding} the necessary padding
	 */
	getPadding: function() {
		var me = this;
		return {
			left: me.paddingLeft || 0,
			top: me.paddingTop || 0,
			right: me.paddingRight || 0,
			bottom: me.paddingBottom || 0
		};
	},

	/**
	 * Returns the scale tick objects ({label, major})
	 * @since 2.7
	 */
	getTicks: function() {
		return this._ticks;
	},

	/**
	* @private
	*/
	_getLabels: function() {
		var data = this.chart.data;
		return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || [];
	},

	// These methods are ordered by lifecyle. Utilities then follow.
	// Any function defined here is inherited by all scale types.
	// Any function can be extended by the scale type

	/**
	 * Provided for backward compatibility, not available anymore
	 * @function Chart.Scale.mergeTicksOptions
	 * @deprecated since version 2.8.0
	 * @todo remove at version 3
	 */
	mergeTicksOptions: function() {
		// noop
	},

	beforeUpdate: function() {
		helpers$1.callback(this.options.beforeUpdate, [this]);
	},

	/**
	 * @param {number} maxWidth - the max width in pixels
	 * @param {number} maxHeight - the max height in pixels
	 * @param {object} margins - the space between the edge of the other scales and edge of the chart
	 *   This space comes from two sources:
	 *     - padding - space that's required to show the labels at the edges of the scale
	 *     - thickness of scales or legends in another orientation
	 */
	update: function(maxWidth, maxHeight, margins) {
		var me = this;
		var tickOpts = me.options.ticks;
		var sampleSize = tickOpts.sampleSize;
		var i, ilen, labels, ticks, samplingEnabled;

		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
		me.beforeUpdate();

		// Absorb the master measurements
		me.maxWidth = maxWidth;
		me.maxHeight = maxHeight;
		me.margins = helpers$1.extend({
			left: 0,
			right: 0,
			top: 0,
			bottom: 0
		}, margins);

		me._ticks = null;
		me.ticks = null;
		me._labelSizes = null;
		me._maxLabelLines = 0;
		me.longestLabelWidth = 0;
		me.longestTextCache = me.longestTextCache || {};
		me._gridLineItems = null;
		me._labelItems = null;

		// Dimensions
		me.beforeSetDimensions();
		me.setDimensions();
		me.afterSetDimensions();

		// Data min/max
		me.beforeDataLimits();
		me.determineDataLimits();
		me.afterDataLimits();

		// Ticks - `this.ticks` is now DEPRECATED!
		// Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
		// and must not be accessed directly from outside this class. `this.ticks` being
		// around for long time and not marked as private, we can't change its structure
		// without unexpected breaking changes. If you need to access the scale ticks,
		// use scale.getTicks() instead.

		me.beforeBuildTicks();

		// New implementations should return an array of objects but for BACKWARD COMPAT,
		// we still support no return (`this.ticks` internally set by calling this method).
		ticks = me.buildTicks() || [];

		// Allow modification of ticks in callback.
		ticks = me.afterBuildTicks(ticks) || ticks;

		// Ensure ticks contains ticks in new tick format
		if ((!ticks || !ticks.length) && me.ticks) {
			ticks = [];
			for (i = 0, ilen = me.ticks.length; i < ilen; ++i) {
				ticks.push({
					value: me.ticks[i],
					major: false
				});
			}
		}

		me._ticks = ticks;

		// Compute tick rotation and fit using a sampled subset of labels
		// We generally don't need to compute the size of every single label for determining scale size
		samplingEnabled = sampleSize < ticks.length;
		labels = me._convertTicksToLabels(samplingEnabled ? sample(ticks, sampleSize) : ticks);

		// _configure is called twice, once here, once from core.controller.updateLayout.
		// Here we haven't been positioned yet, but dimensions are correct.
		// Variables set in _configure are needed for calculateTickRotation, and
		// it's ok that coordinates are not correct there, only dimensions matter.
		me._configure();

		// Tick Rotation
		me.beforeCalculateTickRotation();
		me.calculateTickRotation();
		me.afterCalculateTickRotation();

		me.beforeFit();
		me.fit();
		me.afterFit();

		// Auto-skip
		me._ticksToDraw = tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto') ? me._autoSkip(ticks) : ticks;

		if (samplingEnabled) {
			// Generate labels using all non-skipped ticks
			labels = me._convertTicksToLabels(me._ticksToDraw);
		}

		me.ticks = labels;   // BACKWARD COMPATIBILITY

		// IMPORTANT: after this point, we consider that `this.ticks` will NEVER change!

		me.afterUpdate();

		// TODO(v3): remove minSize as a public property and return value from all layout boxes. It is unused
		// make maxWidth and maxHeight private
		return me.minSize;
	},

	/**
	 * @private
	 */
	_configure: function() {
		var me = this;
		var reversePixels = me.options.ticks.reverse;
		var startPixel, endPixel;

		if (me.isHorizontal()) {
			startPixel = me.left;
			endPixel = me.right;
		} else {
			startPixel = me.top;
			endPixel = me.bottom;
			// by default vertical scales are from bottom to top, so pixels are reversed
			reversePixels = !reversePixels;
		}
		me._startPixel = startPixel;
		me._endPixel = endPixel;
		me._reversePixels = reversePixels;
		me._length = endPixel - startPixel;
	},

	afterUpdate: function() {
		helpers$1.callback(this.options.afterUpdate, [this]);
	},

	//

	beforeSetDimensions: function() {
		helpers$1.callback(this.options.beforeSetDimensions, [this]);
	},
	setDimensions: function() {
		var me = this;
		// Set the unconstrained dimension before label rotation
		if (me.isHorizontal()) {
			// Reset position before calculating rotation
			me.width = me.maxWidth;
			me.left = 0;
			me.right = me.width;
		} else {
			me.height = me.maxHeight;

			// Reset position before calculating rotation
			me.top = 0;
			me.bottom = me.height;
		}

		// Reset padding
		me.paddingLeft = 0;
		me.paddingTop = 0;
		me.paddingRight = 0;
		me.paddingBottom = 0;
	},
	afterSetDimensions: function() {
		helpers$1.callback(this.options.afterSetDimensions, [this]);
	},

	// Data limits
	beforeDataLimits: function() {
		helpers$1.callback(this.options.beforeDataLimits, [this]);
	},
	determineDataLimits: helpers$1.noop,
	afterDataLimits: function() {
		helpers$1.callback(this.options.afterDataLimits, [this]);
	},

	//
	beforeBuildTicks: function() {
		helpers$1.callback(this.options.beforeBuildTicks, [this]);
	},
	buildTicks: helpers$1.noop,
	afterBuildTicks: function(ticks) {
		var me = this;
		// ticks is empty for old axis implementations here
		if (isArray(ticks) && ticks.length) {
			return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]);
		}
		// Support old implementations (that modified `this.ticks` directly in buildTicks)
		me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks;
		return ticks;
	},

	beforeTickToLabelConversion: function() {
		helpers$1.callback(this.options.beforeTickToLabelConversion, [this]);
	},
	convertTicksToLabels: function() {
		var me = this;
		// Convert ticks to strings
		var tickOpts = me.options.ticks;
		me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
	},
	afterTickToLabelConversion: function() {
		helpers$1.callback(this.options.afterTickToLabelConversion, [this]);
	},

	//

	beforeCalculateTickRotation: function() {
		helpers$1.callback(this.options.beforeCalculateTickRotation, [this]);
	},
	calculateTickRotation: function() {
		var me = this;
		var options = me.options;
		var tickOpts = options.ticks;
		var numTicks = me.getTicks().length;
		var minRotation = tickOpts.minRotation || 0;
		var maxRotation = tickOpts.maxRotation;
		var labelRotation = minRotation;
		var labelSizes, maxLabelWidth, maxLabelHeight, maxWidth, tickWidth, maxHeight, maxLabelDiagonal;

		if (!me._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !me.isHorizontal()) {
			me.labelRotation = minRotation;
			return;
		}

		labelSizes = me._getLabelSizes();
		maxLabelWidth = labelSizes.widest.width;
		maxLabelHeight = labelSizes.highest.height - labelSizes.highest.offset;

		// Estimate the width of each grid based on the canvas width, the maximum
		// label width and the number of tick intervals
		maxWidth = Math.min(me.maxWidth, me.chart.width - maxLabelWidth);
		tickWidth = options.offset ? me.maxWidth / numTicks : maxWidth / (numTicks - 1);

		// Allow 3 pixels x2 padding either side for label readability
		if (maxLabelWidth + 6 > tickWidth) {
			tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1));
			maxHeight = me.maxHeight - getTickMarkLength(options.gridLines)
				- tickOpts.padding - getScaleLabelHeight(options.scaleLabel);
			maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);
			labelRotation = helpers$1.toDegrees(Math.min(
				Math.asin(Math.min((labelSizes.highest.height + 6) / tickWidth, 1)),
				Math.asin(Math.min(maxHeight / maxLabelDiagonal, 1)) - Math.asin(maxLabelHeight / maxLabelDiagonal)
			));
			labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));
		}

		me.labelRotation = labelRotation;
	},
	afterCalculateTickRotation: function() {
		helpers$1.callback(this.options.afterCalculateTickRotation, [this]);
	},

	//

	beforeFit: function() {
		helpers$1.callback(this.options.beforeFit, [this]);
	},
	fit: function() {
		var me = this;
		// Reset
		var minSize = me.minSize = {
			width: 0,
			height: 0
		};

		var chart = me.chart;
		var opts = me.options;
		var tickOpts = opts.ticks;
		var scaleLabelOpts = opts.scaleLabel;
		var gridLineOpts = opts.gridLines;
		var display = me._isVisible();
		var isBottom = opts.position === 'bottom';
		var isHorizontal = me.isHorizontal();

		// Width
		if (isHorizontal) {
			minSize.width = me.maxWidth;
		} else if (display) {
			minSize.width = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts);
		}

		// height
		if (!isHorizontal) {
			minSize.height = me.maxHeight; // fill all the height
		} else if (display) {
			minSize.height = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts);
		}

		// Don't bother fitting the ticks if we are not showing the labels
		if (tickOpts.display && display) {
			var tickFonts = parseTickFontOptions(tickOpts);
			var labelSizes = me._getLabelSizes();
			var firstLabelSize = labelSizes.first;
			var lastLabelSize = labelSizes.last;
			var widestLabelSize = labelSizes.widest;
			var highestLabelSize = labelSizes.highest;
			var lineSpace = tickFonts.minor.lineHeight * 0.4;
			var tickPadding = tickOpts.padding;

			if (isHorizontal) {
				// A horizontal axis is more constrained by the height.
				var isRotated = me.labelRotation !== 0;
				var angleRadians = helpers$1.toRadians(me.labelRotation);
				var cosRotation = Math.cos(angleRadians);
				var sinRotation = Math.sin(angleRadians);

				var labelHeight = sinRotation * widestLabelSize.width
					+ cosRotation * (highestLabelSize.height - (isRotated ? highestLabelSize.offset : 0))
					+ (isRotated ? 0 : lineSpace); // padding

				minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);

				var offsetLeft = me.getPixelForTick(0) - me.left;
				var offsetRight = me.right - me.getPixelForTick(me.getTicks().length - 1);
				var paddingLeft, paddingRight;

				// Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
				// which means that the right padding is dominated by the font height
				if (isRotated) {
					paddingLeft = isBottom ?
						cosRotation * firstLabelSize.width + sinRotation * firstLabelSize.offset :
						sinRotation * (firstLabelSize.height - firstLabelSize.offset);
					paddingRight = isBottom ?
						sinRotation * (lastLabelSize.height - lastLabelSize.offset) :
						cosRotation * lastLabelSize.width + sinRotation * lastLabelSize.offset;
				} else {
					paddingLeft = firstLabelSize.width / 2;
					paddingRight = lastLabelSize.width / 2;
				}

				// Adjust padding taking into account changes in offsets
				// and add 3 px to move away from canvas edges
				me.paddingLeft = Math.max((paddingLeft - offsetLeft) * me.width / (me.width - offsetLeft), 0) + 3;
				me.paddingRight = Math.max((paddingRight - offsetRight) * me.width / (me.width - offsetRight), 0) + 3;
			} else {
				// A vertical axis is more constrained by the width. Labels are the
				// dominant factor here, so get that length first and account for padding
				var labelWidth = tickOpts.mirror ? 0 :
					// use lineSpace for consistency with horizontal axis
					// tickPadding is not implemented for horizontal
					widestLabelSize.width + tickPadding + lineSpace;

				minSize.width = Math.min(me.maxWidth, minSize.width + labelWidth);

				me.paddingTop = firstLabelSize.height / 2;
				me.paddingBottom = lastLabelSize.height / 2;
			}
		}

		me.handleMargins();

		if (isHorizontal) {
			me.width = me._length = chart.width - me.margins.left - me.margins.right;
			me.height = minSize.height;
		} else {
			me.width = minSize.width;
			me.height = me._length = chart.height - me.margins.top - me.margins.bottom;
		}
	},

	/**
	 * Handle margins and padding interactions
	 * @private
	 */
	handleMargins: function() {
		var me = this;
		if (me.margins) {
			me.margins.left = Math.max(me.paddingLeft, me.margins.left);
			me.margins.top = Math.max(me.paddingTop, me.margins.top);
			me.margins.right = Math.max(me.paddingRight, me.margins.right);
			me.margins.bottom = Math.max(me.paddingBottom, me.margins.bottom);
		}
	},

	afterFit: function() {
		helpers$1.callback(this.options.afterFit, [this]);
	},

	// Shared Methods
	isHorizontal: function() {
		var pos = this.options.position;
		return pos === 'top' || pos === 'bottom';
	},
	isFullWidth: function() {
		return this.options.fullWidth;
	},

	// Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
	getRightValue: function(rawValue) {
		// Null and undefined values first
		if (isNullOrUndef(rawValue)) {
			return NaN;
		}
		// isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
		if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) {
			return NaN;
		}

		// If it is in fact an object, dive in one more level
		if (rawValue) {
			if (this.isHorizontal()) {
				if (rawValue.x !== undefined) {
					return this.getRightValue(rawValue.x);
				}
			} else if (rawValue.y !== undefined) {
				return this.getRightValue(rawValue.y);
			}
		}

		// Value is good, return it
		return rawValue;
	},

	_convertTicksToLabels: function(ticks) {
		var me = this;
		var labels, i, ilen;

		me.ticks = ticks.map(function(tick) {
			return tick.value;
		});

		me.beforeTickToLabelConversion();

		// New implementations should return the formatted tick labels but for BACKWARD
		// COMPAT, we still support no return (`this.ticks` internally changed by calling
		// this method and supposed to contain only string values).
		labels = me.convertTicksToLabels(ticks) || me.ticks;

		me.afterTickToLabelConversion();

		// BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
		for (i = 0, ilen = ticks.length; i < ilen; ++i) {
			ticks[i].label = labels[i];
		}

		return labels;
	},

	/**
	 * @private
	 */
	_getLabelSizes: function() {
		var me = this;
		var labelSizes = me._labelSizes;

		if (!labelSizes) {
			me._labelSizes = labelSizes = computeLabelSizes(me.ctx, parseTickFontOptions(me.options.ticks), me.getTicks(), me.longestTextCache);
			me.longestLabelWidth = labelSizes.widest.width;
		}

		return labelSizes;
	},

	/**
	 * @private
	 */
	_parseValue: function(value) {
		var start, end, min, max;

		if (isArray(value)) {
			start = +this.getRightValue(value[0]);
			end = +this.getRightValue(value[1]);
			min = Math.min(start, end);
			max = Math.max(start, end);
		} else {
			value = +this.getRightValue(value);
			start = undefined;
			end = value;
			min = value;
			max = value;
		}

		return {
			min: min,
			max: max,
			start: start,
			end: end
		};
	},

	/**
	* @private
	*/
	_getScaleLabel: function(rawValue) {
		var v = this._parseValue(rawValue);
		if (v.start !== undefined) {
			return '[' + v.start + ', ' + v.end + ']';
		}

		return +this.getRightValue(rawValue);
	},

	/**
	 * Used to get the value to display in the tooltip for the data at the given index
	 * @param index
	 * @param datasetIndex
	 */
	getLabelForIndex: helpers$1.noop,

	/**
	 * Returns the location of the given data point. Value can either be an index or a numerical value
	 * The coordinate (0, 0) is at the upper-left corner of the canvas
	 * @param value
	 * @param index
	 * @param datasetIndex
	 */
	getPixelForValue: helpers$1.noop,

	/**
	 * Used to get the data value from a given pixel. This is the inverse of getPixelForValue
	 * The coordinate (0, 0) is at the upper-left corner of the canvas
	 * @param pixel
	 */
	getValueForPixel: helpers$1.noop,

	/**
	 * Returns the location of the tick at the given index
	 * The coordinate (0, 0) is at the upper-left corner of the canvas
	 */
	getPixelForTick: function(index) {
		var me = this;
		var offset = me.options.offset;
		var numTicks = me._ticks.length;
		var tickWidth = 1 / Math.max(numTicks - (offset ? 0 : 1), 1);

		return index < 0 || index > numTicks - 1
			? null
			: me.getPixelForDecimal(index * tickWidth + (offset ? tickWidth / 2 : 0));
	},

	/**
	 * Utility for getting the pixel location of a percentage of scale
	 * The coordinate (0, 0) is at the upper-left corner of the canvas
	 */
	getPixelForDecimal: function(decimal) {
		var me = this;

		if (me._reversePixels) {
			decimal = 1 - decimal;
		}

		return me._startPixel + decimal * me._length;
	},

	getDecimalForPixel: function(pixel) {
		var decimal = (pixel - this._startPixel) / this._length;
		return this._reversePixels ? 1 - decimal : decimal;
	},

	/**
	 * Returns the pixel for the minimum chart value
	 * The coordinate (0, 0) is at the upper-left corner of the canvas
	 */
	getBasePixel: function() {
		return this.getPixelForValue(this.getBaseValue());
	},

	getBaseValue: function() {
		var me = this;
		var min = me.min;
		var max = me.max;

		return me.beginAtZero ? 0 :
			min < 0 && max < 0 ? max :
			min > 0 && max > 0 ? min :
			0;
	},

	/**
	 * Returns a subset of ticks to be plotted to avoid overlapping labels.
	 * @private
	 */
	_autoSkip: function(ticks) {
		var me = this;
		var tickOpts = me.options.ticks;
		var axisLength = me._length;
		var ticksLimit = tickOpts.maxTicksLimit || axisLength / me._tickSize() + 1;
		var majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : [];
		var numMajorIndices = majorIndices.length;
		var first = majorIndices[0];
		var last = majorIndices[numMajorIndices - 1];
		var i, ilen, spacing, avgMajorSpacing;

		// If there are too many major ticks to display them all
		if (numMajorIndices > ticksLimit) {
			skipMajors(ticks, majorIndices, numMajorIndices / ticksLimit);
			return nonSkipped(ticks);
		}

		spacing = calculateSpacing(majorIndices, ticks, axisLength, ticksLimit);

		if (numMajorIndices > 0) {
			for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) {
				skip(ticks, spacing, majorIndices[i], majorIndices[i + 1]);
			}
			avgMajorSpacing = numMajorIndices > 1 ? (last - first) / (numMajorIndices - 1) : null;
			skip(ticks, spacing, helpers$1.isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first);
			skip(ticks, spacing, last, helpers$1.isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing);
			return nonSkipped(ticks);
		}
		skip(ticks, spacing);
		return nonSkipped(ticks);
	},

	/**
	 * @private
	 */
	_tickSize: function() {
		var me = this;
		var optionTicks = me.options.ticks;

		// Calculate space needed by label in axis direction.
		var rot = helpers$1.toRadians(me.labelRotation);
		var cos = Math.abs(Math.cos(rot));
		var sin = Math.abs(Math.sin(rot));

		var labelSizes = me._getLabelSizes();
		var padding = optionTicks.autoSkipPadding || 0;
		var w = labelSizes ? labelSizes.widest.width + padding : 0;
		var h = labelSizes ? labelSizes.highest.height + padding : 0;

		// Calculate space needed for 1 tick in axis direction.
		return me.isHorizontal()
			? h * cos > w * sin ? w / cos : h / sin
			: h * sin < w * cos ? h / cos : w / sin;
	},

	/**
	 * @private
	 */
	_isVisible: function() {
		var me = this;
		var chart = me.chart;
		var display = me.options.display;
		var i, ilen, meta;

		if (display !== 'auto') {
			return !!display;
		}

		// When 'auto', the scale is visible if at least one associated dataset is visible.
		for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
			if (chart.isDatasetVisible(i)) {
				meta = chart.getDatasetMeta(i);
				if (meta.xAxisID === me.id || meta.yAxisID === me.id) {
					return true;
				}
			}
		}

		return false;
	},

	/**
	 * @private
	 */
	_computeGridLineItems: function(chartArea) {
		var me = this;
		var chart = me.chart;
		var options = me.options;
		var gridLines = options.gridLines;
		var position = options.position;
		var offsetGridLines = gridLines.offsetGridLines;
		var isHorizontal = me.isHorizontal();
		var ticks = me._ticksToDraw;
		var ticksLength = ticks.length + (offsetGridLines ? 1 : 0);

		var tl = getTickMarkLength(gridLines);
		var items = [];
		var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0;
		var axisHalfWidth = axisWidth / 2;
		var alignPixel = helpers$1._alignPixel;
		var alignBorderValue = function(pixel) {
			return alignPixel(chart, pixel, axisWidth);
		};
		var borderValue, i, tick, lineValue, alignedLineValue;
		var tx1, ty1, tx2, ty2, x1, y1, x2, y2, lineWidth, lineColor, borderDash, borderDashOffset;

		if (position === 'top') {
			borderValue = alignBorderValue(me.bottom);
			ty1 = me.bottom - tl;
			ty2 = borderValue - axisHalfWidth;
			y1 = alignBorderValue(chartArea.top) + axisHalfWidth;
			y2 = chartArea.bottom;
		} else if (position === 'bottom') {
			borderValue = alignBorderValue(me.top);
			y1 = chartArea.top;
			y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth;
			ty1 = borderValue + axisHalfWidth;
			ty2 = me.top + tl;
		} else if (position === 'left') {
			borderValue = alignBorderValue(me.right);
			tx1 = me.right - tl;
			tx2 = borderValue - axisHalfWidth;
			x1 = alignBorderValue(chartArea.left) + axisHalfWidth;
			x2 = chartArea.right;
		} else {
			borderValue = alignBorderValue(me.left);
			x1 = chartArea.left;
			x2 = alignBorderValue(chartArea.right) - axisHalfWidth;
			tx1 = borderValue + axisHalfWidth;
			tx2 = me.left + tl;
		}

		for (i = 0; i < ticksLength; ++i) {
			tick = ticks[i] || {};

			// autoskipper skipped this tick (#4635)
			if (isNullOrUndef(tick.label) && i < ticks.length) {
				continue;
			}

			if (i === me.zeroLineIndex && options.offset === offsetGridLines) {
				// Draw the first index specially
				lineWidth = gridLines.zeroLineWidth;
				lineColor = gridLines.zeroLineColor;
				borderDash = gridLines.zeroLineBorderDash || [];
				borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0;
			} else {
				lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, i, 1);
				lineColor = valueAtIndexOrDefault(gridLines.color, i, 'rgba(0,0,0,0.1)');
				borderDash = gridLines.borderDash || [];
				borderDashOffset = gridLines.borderDashOffset || 0.0;
			}

			lineValue = getPixelForGridLine(me, tick._index || i, offsetGridLines);

			// Skip if the pixel is out of the range
			if (lineValue === undefined) {
				continue;
			}

			alignedLineValue = alignPixel(chart, lineValue, lineWidth);

			if (isHorizontal) {
				tx1 = tx2 = x1 = x2 = alignedLineValue;
			} else {
				ty1 = ty2 = y1 = y2 = alignedLineValue;
			}

			items.push({
				tx1: tx1,
				ty1: ty1,
				tx2: tx2,
				ty2: ty2,
				x1: x1,
				y1: y1,
				x2: x2,
				y2: y2,
				width: lineWidth,
				color: lineColor,
				borderDash: borderDash,
				borderDashOffset: borderDashOffset,
			});
		}

		items.ticksLength = ticksLength;
		items.borderValue = borderValue;

		return items;
	},

	/**
	 * @private
	 */
	_computeLabelItems: function() {
		var me = this;
		var options = me.options;
		var optionTicks = options.ticks;
		var position = options.position;
		var isMirrored = optionTicks.mirror;
		var isHorizontal = me.isHorizontal();
		var ticks = me._ticksToDraw;
		var fonts = parseTickFontOptions(optionTicks);
		var tickPadding = optionTicks.padding;
		var tl = getTickMarkLength(options.gridLines);
		var rotation = -helpers$1.toRadians(me.labelRotation);
		var items = [];
		var i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset;

		if (position === 'top') {
			y = me.bottom - tl - tickPadding;
			textAlign = !rotation ? 'center' : 'left';
		} else if (position === 'bottom') {
			y = me.top + tl + tickPadding;
			textAlign = !rotation ? 'center' : 'right';
		} else if (position === 'left') {
			x = me.right - (isMirrored ? 0 : tl) - tickPadding;
			textAlign = isMirrored ? 'left' : 'right';
		} else {
			x = me.left + (isMirrored ? 0 : tl) + tickPadding;
			textAlign = isMirrored ? 'right' : 'left';
		}

		for (i = 0, ilen = ticks.length; i < ilen; ++i) {
			tick = ticks[i];
			label = tick.label;

			// autoskipper skipped this tick (#4635)
			if (isNullOrUndef(label)) {
				continue;
			}

			pixel = me.getPixelForTick(tick._index || i) + optionTicks.labelOffset;
			font = tick.major ? fonts.major : fonts.minor;
			lineHeight = font.lineHeight;
			lineCount = isArray(label) ? label.length : 1;

			if (isHorizontal) {
				x = pixel;
				textOffset = position === 'top'
					? ((!rotation ? 0.5 : 1) - lineCount) * lineHeight
					: (!rotation ? 0.5 : 0) * lineHeight;
			} else {
				y = pixel;
				textOffset = (1 - lineCount) * lineHeight / 2;
			}

			items.push({
				x: x,
				y: y,
				rotation: rotation,
				label: label,
				font: font,
				textOffset: textOffset,
				textAlign: textAlign
			});
		}

		return items;
	},

	/**
	 * @private
	 */
	_drawGrid: function(chartArea) {
		var me = this;
		var gridLines = me.options.gridLines;

		if (!gridLines.display) {
			return;
		}

		var ctx = me.ctx;
		var chart = me.chart;
		var alignPixel = helpers$1._alignPixel;
		var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0;
		var items = me._gridLineItems || (me._gridLineItems = me._computeGridLineItems(chartArea));
		var width, color, i, ilen, item;

		for (i = 0, ilen = items.length; i < ilen; ++i) {
			item = items[i];
			width = item.width;
			color = item.color;

			if (width && color) {
				ctx.save();
				ctx.lineWidth = width;
				ctx.strokeStyle = color;
				if (ctx.setLineDash) {
					ctx.setLineDash(item.borderDash);
					ctx.lineDashOffset = item.borderDashOffset;
				}

				ctx.beginPath();

				if (gridLines.drawTicks) {
					ctx.moveTo(item.tx1, item.ty1);
					ctx.lineTo(item.tx2, item.ty2);
				}

				if (gridLines.drawOnChartArea) {
					ctx.moveTo(item.x1, item.y1);
					ctx.lineTo(item.x2, item.y2);
				}

				ctx.stroke();
				ctx.restore();
			}
		}

		if (axisWidth) {
			// Draw the line at the edge of the axis
			var firstLineWidth = axisWidth;
			var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, items.ticksLength - 1, 1);
			var borderValue = items.borderValue;
			var x1, x2, y1, y2;

			if (me.isHorizontal()) {
				x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2;
				x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2;
				y1 = y2 = borderValue;
			} else {
				y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2;
				y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2;
				x1 = x2 = borderValue;
			}

			ctx.lineWidth = axisWidth;
			ctx.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0);
			ctx.beginPath();
			ctx.moveTo(x1, y1);
			ctx.lineTo(x2, y2);
			ctx.stroke();
		}
	},

	/**
	 * @private
	 */
	_drawLabels: function() {
		var me = this;
		var optionTicks = me.options.ticks;

		if (!optionTicks.display) {
			return;
		}

		var ctx = me.ctx;
		var items = me._labelItems || (me._labelItems = me._computeLabelItems());
		var i, j, ilen, jlen, item, tickFont, label, y;

		for (i = 0, ilen = items.length; i < ilen; ++i) {
			item = items[i];
			tickFont = item.font;

			// Make sure we draw text in the correct color and font
			ctx.save();
			ctx.translate(item.x, item.y);
			ctx.rotate(item.rotation);
			ctx.font = tickFont.string;
			ctx.fillStyle = tickFont.color;
			ctx.textBaseline = 'middle';
			ctx.textAlign = item.textAlign;

			label = item.label;
			y = item.textOffset;
			if (isArray(label)) {
				for (j = 0, jlen = label.length; j < jlen; ++j) {
					// We just make sure the multiline element is a string here..
					ctx.fillText('' + label[j], 0, y);
					y += tickFont.lineHeight;
				}
			} else {
				ctx.fillText(label, 0, y);
			}
			ctx.restore();
		}
	},

	/**
	 * @private
	 */
	_drawTitle: function() {
		var me = this;
		var ctx = me.ctx;
		var options = me.options;
		var scaleLabel = options.scaleLabel;

		if (!scaleLabel.display) {
			return;
		}

		var scaleLabelFontColor = valueOrDefault$a(scaleLabel.fontColor, core_defaults.global.defaultFontColor);
		var scaleLabelFont = helpers$1.options._parseFont(scaleLabel);
		var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding);
		var halfLineHeight = scaleLabelFont.lineHeight / 2;
		var position = options.position;
		var rotation = 0;
		var scaleLabelX, scaleLabelY;

		if (me.isHorizontal()) {
			scaleLabelX = me.left + me.width / 2; // midpoint of the width
			scaleLabelY = position === 'bottom'
				? me.bottom - halfLineHeight - scaleLabelPadding.bottom
				: me.top + halfLineHeight + scaleLabelPadding.top;
		} else {
			var isLeft = position === 'left';
			scaleLabelX = isLeft
				? me.left + halfLineHeight + scaleLabelPadding.top
				: me.right - halfLineHeight - scaleLabelPadding.top;
			scaleLabelY = me.top + me.height / 2;
			rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
		}

		ctx.save();
		ctx.translate(scaleLabelX, scaleLabelY);
		ctx.rotate(rotation);
		ctx.textAlign = 'center';
		ctx.textBaseline = 'middle';
		ctx.fillStyle = scaleLabelFontColor; // render in correct colour
		ctx.font = scaleLabelFont.string;
		ctx.fillText(scaleLabel.labelString, 0, 0);
		ctx.restore();
	},

	draw: function(chartArea) {
		var me = this;

		if (!me._isVisible()) {
			return;
		}

		me._drawGrid(chartArea);
		me._drawTitle();
		me._drawLabels();
	},

	/**
	 * @private
	 */
	_layers: function() {
		var me = this;
		var opts = me.options;
		var tz = opts.ticks && opts.ticks.z || 0;
		var gz = opts.gridLines && opts.gridLines.z || 0;

		if (!me._isVisible() || tz === gz || me.draw !== me._draw) {
			// backward compatibility: draw has been overridden by custom scale
			return [{
				z: tz,
				draw: function() {
					me.draw.apply(me, arguments);
				}
			}];
		}

		return [{
			z: gz,
			draw: function() {
				me._drawGrid.apply(me, arguments);
				me._drawTitle.apply(me, arguments);
			}
		}, {
			z: tz,
			draw: function() {
				me._drawLabels.apply(me, arguments);
			}
		}];
	},

	/**
	 * @private
	 */
	_getMatchingVisibleMetas: function(type) {
		var me = this;
		var isHorizontal = me.isHorizontal();
		return me.chart._getSortedVisibleDatasetMetas()
			.filter(function(meta) {
				return (!type || meta.type === type)
					&& (isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id);
			});
	}
});

Scale.prototype._draw = Scale.prototype.draw;

var core_scale = Scale;

var isNullOrUndef$1 = helpers$1.isNullOrUndef;

var defaultConfig = {
	position: 'bottom'
};

var scale_category = core_scale.extend({
	determineDataLimits: function() {
		var me = this;
		var labels = me._getLabels();
		var ticksOpts = me.options.ticks;
		var min = ticksOpts.min;
		var max = ticksOpts.max;
		var minIndex = 0;
		var maxIndex = labels.length - 1;
		var findIndex;

		if (min !== undefined) {
			// user specified min value
			findIndex = labels.indexOf(min);
			if (findIndex >= 0) {
				minIndex = findIndex;
			}
		}

		if (max !== undefined) {
			// user specified max value
			findIndex = labels.indexOf(max);
			if (findIndex >= 0) {
				maxIndex = findIndex;
			}
		}

		me.minIndex = minIndex;
		me.maxIndex = maxIndex;
		me.min = labels[minIndex];
		me.max = labels[maxIndex];
	},

	buildTicks: function() {
		var me = this;
		var labels = me._getLabels();
		var minIndex = me.minIndex;
		var maxIndex = me.maxIndex;

		// If we are viewing some subset of labels, slice the original array
		me.ticks = (minIndex === 0 && maxIndex === labels.length - 1) ? labels : labels.slice(minIndex, maxIndex + 1);
	},

	getLabelForIndex: function(index, datasetIndex) {
		var me = this;
		var chart = me.chart;

		if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) {
			return me.getRightValue(chart.data.datasets[datasetIndex].data[index]);
		}

		return me._getLabels()[index];
	},

	_configure: function() {
		var me = this;
		var offset = me.options.offset;
		var ticks = me.ticks;

		core_scale.prototype._configure.call(me);

		if (!me.isHorizontal()) {
			// For backward compatibility, vertical category scale reverse is inverted.
			me._reversePixels = !me._reversePixels;
		}

		if (!ticks) {
			return;
		}

		me._startValue = me.minIndex - (offset ? 0.5 : 0);
		me._valueRange = Math.max(ticks.length - (offset ? 0 : 1), 1);
	},

	// Used to get data value locations.  Value can either be an index or a numerical value
	getPixelForValue: function(value, index, datasetIndex) {
		var me = this;
		var valueCategory, labels, idx;

		if (!isNullOrUndef$1(index) && !isNullOrUndef$1(datasetIndex)) {
			value = me.chart.data.datasets[datasetIndex].data[index];
		}

		// If value is a data object, then index is the index in the data array,
		// not the index of the scale. We need to change that.
		if (!isNullOrUndef$1(value)) {
			valueCategory = me.isHorizontal() ? value.x : value.y;
		}
		if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
			labels = me._getLabels();
			value = helpers$1.valueOrDefault(valueCategory, value);
			idx = labels.indexOf(value);
			index = idx !== -1 ? idx : index;
			if (isNaN(index)) {
				index = value;
			}
		}
		return me.getPixelForDecimal((index - me._startValue) / me._valueRange);
	},

	getPixelForTick: function(index) {
		var ticks = this.ticks;
		return index < 0 || index > ticks.length - 1
			? null
			: this.getPixelForValue(ticks[index], index + this.minIndex);
	},

	getValueForPixel: function(pixel) {
		var me = this;
		var value = Math.round(me._startValue + me.getDecimalForPixel(pixel) * me._valueRange);
		return Math.min(Math.max(value, 0), me.ticks.length - 1);
	},

	getBasePixel: function() {
		return this.bottom;
	}
});

// INTERNAL: static default options, registered in src/index.js
var _defaults = defaultConfig;
scale_category._defaults = _defaults;

var noop = helpers$1.noop;
var isNullOrUndef$2 = helpers$1.isNullOrUndef;

/**
 * Generate a set of linear ticks
 * @param generationOptions the options used to generate the ticks
 * @param dataRange the range of the data
 * @returns {number[]} array of tick values
 */
function generateTicks(generationOptions, dataRange) {
	var ticks = [];
	// To get a "nice" value for the tick spacing, we will use the appropriately named
	// "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
	// for details.

	var MIN_SPACING = 1e-14;
	var stepSize = generationOptions.stepSize;
	var unit = stepSize || 1;
	var maxNumSpaces = generationOptions.maxTicks - 1;
	var min = generationOptions.min;
	var max = generationOptions.max;
	var precision = generationOptions.precision;
	var rmin = dataRange.min;
	var rmax = dataRange.max;
	var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit;
	var factor, niceMin, niceMax, numSpaces;

	// Beyond MIN_SPACING floating point numbers being to lose precision
	// such that we can't do the math necessary to generate ticks
	if (spacing < MIN_SPACING && isNullOrUndef$2(min) && isNullOrUndef$2(max)) {
		return [rmin, rmax];
	}

	numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
	if (numSpaces > maxNumSpaces) {
		// If the calculated num of spaces exceeds maxNumSpaces, recalculate it
		spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit;
	}

	if (stepSize || isNullOrUndef$2(precision)) {
		// If a precision is not specified, calculate factor based on spacing
		factor = Math.pow(10, helpers$1._decimalPlaces(spacing));
	} else {
		// If the user specified a precision, round to that number of decimal places
		factor = Math.pow(10, precision);
		spacing = Math.ceil(spacing * factor) / factor;
	}

	niceMin = Math.floor(rmin / spacing) * spacing;
	niceMax = Math.ceil(rmax / spacing) * spacing;

	// If min, max and stepSize is set and they make an evenly spaced scale use it.
	if (stepSize) {
		// If very close to our whole number, use it.
		if (!isNullOrUndef$2(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) {
			niceMin = min;
		}
		if (!isNullOrUndef$2(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) {
			niceMax = max;
		}
	}

	numSpaces = (niceMax - niceMin) / spacing;
	// If very close to our rounded value, use it.
	if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
		numSpaces = Math.round(numSpaces);
	} else {
		numSpaces = Math.ceil(numSpaces);
	}

	niceMin = Math.round(niceMin * factor) / factor;
	niceMax = Math.round(niceMax * factor) / factor;
	ticks.push(isNullOrUndef$2(min) ? niceMin : min);
	for (var j = 1; j < numSpaces; ++j) {
		ticks.push(Math.round((niceMin + j * spacing) * factor) / factor);
	}
	ticks.push(isNullOrUndef$2(max) ? niceMax : max);

	return ticks;
}

var scale_linearbase = core_scale.extend({
	getRightValue: function(value) {
		if (typeof value === 'string') {
			return +value;
		}
		return core_scale.prototype.getRightValue.call(this, value);
	},

	handleTickRangeOptions: function() {
		var me = this;
		var opts = me.options;
		var tickOpts = opts.ticks;

		// If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
		// do nothing since that would make the chart weird. If the user really wants a weird chart
		// axis, they can manually override it
		if (tickOpts.beginAtZero) {
			var minSign = helpers$1.sign(me.min);
			var maxSign = helpers$1.sign(me.max);

			if (minSign < 0 && maxSign < 0) {
				// move the top up to 0
				me.max = 0;
			} else if (minSign > 0 && maxSign > 0) {
				// move the bottom down to 0
				me.min = 0;
			}
		}

		var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
		var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;

		if (tickOpts.min !== undefined) {
			me.min = tickOpts.min;
		} else if (tickOpts.suggestedMin !== undefined) {
			if (me.min === null) {
				me.min = tickOpts.suggestedMin;
			} else {
				me.min = Math.min(me.min, tickOpts.suggestedMin);
			}
		}

		if (tickOpts.max !== undefined) {
			me.max = tickOpts.max;
		} else if (tickOpts.suggestedMax !== undefined) {
			if (me.max === null) {
				me.max = tickOpts.suggestedMax;
			} else {
				me.max = Math.max(me.max, tickOpts.suggestedMax);
			}
		}

		if (setMin !== setMax) {
			// We set the min or the max but not both.
			// So ensure that our range is good
			// Inverted or 0 length range can happen when
			// ticks.min is set, and no datasets are visible
			if (me.min >= me.max) {
				if (setMin) {
					me.max = me.min + 1;
				} else {
					me.min = me.max - 1;
				}
			}
		}

		if (me.min === me.max) {
			me.max++;

			if (!tickOpts.beginAtZero) {
				me.min--;
			}
		}
	},

	getTickLimit: function() {
		var me = this;
		var tickOpts = me.options.ticks;
		var stepSize = tickOpts.stepSize;
		var maxTicksLimit = tickOpts.maxTicksLimit;
		var maxTicks;

		if (stepSize) {
			maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1;
		} else {
			maxTicks = me._computeTickLimit();
			maxTicksLimit = maxTicksLimit || 11;
		}

		if (maxTicksLimit) {
			maxTicks = Math.min(maxTicksLimit, maxTicks);
		}

		return maxTicks;
	},

	_computeTickLimit: function() {
		return Number.POSITIVE_INFINITY;
	},

	handleDirectionalChanges: noop,

	buildTicks: function() {
		var me = this;
		var opts = me.options;
		var tickOpts = opts.ticks;

		// Figure out what the max number of ticks we can support it is based on the size of
		// the axis area. For now, we say that the minimum tick spacing in pixels must be 40
		// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
		// the graph. Make sure we always have at least 2 ticks
		var maxTicks = me.getTickLimit();
		maxTicks = Math.max(2, maxTicks);

		var numericGeneratorOptions = {
			maxTicks: maxTicks,
			min: tickOpts.min,
			max: tickOpts.max,
			precision: tickOpts.precision,
			stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
		};
		var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);

		me.handleDirectionalChanges();

		// At this point, we need to update our max and min given the tick values since we have expanded the
		// range of the scale
		me.max = helpers$1.max(ticks);
		me.min = helpers$1.min(ticks);

		if (tickOpts.reverse) {
			ticks.reverse();

			me.start = me.max;
			me.end = me.min;
		} else {
			me.start = me.min;
			me.end = me.max;
		}
	},

	convertTicksToLabels: function() {
		var me = this;
		me.ticksAsNumbers = me.ticks.slice();
		me.zeroLineIndex = me.ticks.indexOf(0);

		core_scale.prototype.convertTicksToLabels.call(me);
	},

	_configure: function() {
		var me = this;
		var ticks = me.getTicks();
		var start = me.min;
		var end = me.max;
		var offset;

		core_scale.prototype._configure.call(me);

		if (me.options.offset && ticks.length) {
			offset = (end - start) / Math.max(ticks.length - 1, 1) / 2;
			start -= offset;
			end += offset;
		}
		me._startValue = start;
		me._endValue = end;
		me._valueRange = end - start;
	}
});

var defaultConfig$1 = {
	position: 'left',
	ticks: {
		callback: core_ticks.formatters.linear
	}
};

var DEFAULT_MIN = 0;
var DEFAULT_MAX = 1;

function getOrCreateStack(stacks, stacked, meta) {
	var key = [
		meta.type,
		// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
		stacked === undefined && meta.stack === undefined ? meta.index : '',
		meta.stack
	].join('.');

	if (stacks[key] === undefined) {
		stacks[key] = {
			pos: [],
			neg: []
		};
	}

	return stacks[key];
}

function stackData(scale, stacks, meta, data) {
	var opts = scale.options;
	var stacked = opts.stacked;
	var stack = getOrCreateStack(stacks, stacked, meta);
	var pos = stack.pos;
	var neg = stack.neg;
	var ilen = data.length;
	var i, value;

	for (i = 0; i < ilen; ++i) {
		value = scale._parseValue(data[i]);
		if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) {
			continue;
		}

		pos[i] = pos[i] || 0;
		neg[i] = neg[i] || 0;

		if (opts.relativePoints) {
			pos[i] = 100;
		} else if (value.min < 0 || value.max < 0) {
			neg[i] += value.min;
		} else {
			pos[i] += value.max;
		}
	}
}

function updateMinMax(scale, meta, data) {
	var ilen = data.length;
	var i, value;

	for (i = 0; i < ilen; ++i) {
		value = scale._parseValue(data[i]);
		if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) {
			continue;
		}

		scale.min = Math.min(scale.min, value.min);
		scale.max = Math.max(scale.max, value.max);
	}
}

var scale_linear = scale_linearbase.extend({
	determineDataLimits: function() {
		var me = this;
		var opts = me.options;
		var chart = me.chart;
		var datasets = chart.data.datasets;
		var metasets = me._getMatchingVisibleMetas();
		var hasStacks = opts.stacked;
		var stacks = {};
		var ilen = metasets.length;
		var i, meta, data, values;

		me.min = Number.POSITIVE_INFINITY;
		me.max = Number.NEGATIVE_INFINITY;

		if (hasStacks === undefined) {
			for (i = 0; !hasStacks && i < ilen; ++i) {
				meta = metasets[i];
				hasStacks = meta.stack !== undefined;
			}
		}

		for (i = 0; i < ilen; ++i) {
			meta = metasets[i];
			data = datasets[meta.index].data;
			if (hasStacks) {
				stackData(me, stacks, meta, data);
			} else {
				updateMinMax(me, meta, data);
			}
		}

		helpers$1.each(stacks, function(stackValues) {
			values = stackValues.pos.concat(stackValues.neg);
			me.min = Math.min(me.min, helpers$1.min(values));
			me.max = Math.max(me.max, helpers$1.max(values));
		});

		me.min = helpers$1.isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
		me.max = helpers$1.isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;

		// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
		me.handleTickRangeOptions();
	},

	// Returns the maximum number of ticks based on the scale dimension
	_computeTickLimit: function() {
		var me = this;
		var tickFont;

		if (me.isHorizontal()) {
			return Math.ceil(me.width / 40);
		}
		tickFont = helpers$1.options._parseFont(me.options.ticks);
		return Math.ceil(me.height / tickFont.lineHeight);
	},

	// Called after the ticks are built. We need
	handleDirectionalChanges: function() {
		if (!this.isHorizontal()) {
			// We are in a vertical orientation. The top value is the highest. So reverse the array
			this.ticks.reverse();
		}
	},

	getLabelForIndex: function(index, datasetIndex) {
		return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]);
	},

	// Utils
	getPixelForValue: function(value) {
		var me = this;
		return me.getPixelForDecimal((+me.getRightValue(value) - me._startValue) / me._valueRange);
	},

	getValueForPixel: function(pixel) {
		return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange;
	},

	getPixelForTick: function(index) {
		var ticks = this.ticksAsNumbers;
		if (index < 0 || index > ticks.length - 1) {
			return null;
		}
		return this.getPixelForValue(ticks[index]);
	}
});

// INTERNAL: static default options, registered in src/index.js
var _defaults$1 = defaultConfig$1;
scale_linear._defaults = _defaults$1;

var valueOrDefault$b = helpers$1.valueOrDefault;
var log10 = helpers$1.math.log10;

/**
 * Generate a set of logarithmic ticks
 * @param generationOptions the options used to generate the ticks
 * @param dataRange the range of the data
 * @returns {number[]} array of tick values
 */
function generateTicks$1(generationOptions, dataRange) {
	var ticks = [];

	var tickVal = valueOrDefault$b(generationOptions.min, Math.pow(10, Math.floor(log10(dataRange.min))));

	var endExp = Math.floor(log10(dataRange.max));
	var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
	var exp, significand;

	if (tickVal === 0) {
		exp = Math.floor(log10(dataRange.minNotZero));
		significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));

		ticks.push(tickVal);
		tickVal = significand * Math.pow(10, exp);
	} else {
		exp = Math.floor(log10(tickVal));
		significand = Math.floor(tickVal / Math.pow(10, exp));
	}
	var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;

	do {
		ticks.push(tickVal);

		++significand;
		if (significand === 10) {
			significand = 1;
			++exp;
			precision = exp >= 0 ? 1 : precision;
		}

		tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
	} while (exp < endExp || (exp === endExp && significand < endSignificand));

	var lastTick = valueOrDefault$b(generationOptions.max, tickVal);
	ticks.push(lastTick);

	return ticks;
}

var defaultConfig$2 = {
	position: 'left',

	// label settings
	ticks: {
		callback: core_ticks.formatters.logarithmic
	}
};

// TODO(v3): change this to positiveOrDefault
function nonNegativeOrDefault(value, defaultValue) {
	return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue;
}

var scale_logarithmic = core_scale.extend({
	determineDataLimits: function() {
		var me = this;
		var opts = me.options;
		var chart = me.chart;
		var datasets = chart.data.datasets;
		var isHorizontal = me.isHorizontal();
		function IDMatches(meta) {
			return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
		}
		var datasetIndex, meta, value, data, i, ilen;

		// Calculate Range
		me.min = Number.POSITIVE_INFINITY;
		me.max = Number.NEGATIVE_INFINITY;
		me.minNotZero = Number.POSITIVE_INFINITY;

		var hasStacks = opts.stacked;
		if (hasStacks === undefined) {
			for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) {
				meta = chart.getDatasetMeta(datasetIndex);
				if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
					meta.stack !== undefined) {
					hasStacks = true;
					break;
				}
			}
		}

		if (opts.stacked || hasStacks) {
			var valuesPerStack = {};

			for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) {
				meta = chart.getDatasetMeta(datasetIndex);
				var key = [
					meta.type,
					// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
					((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
					meta.stack
				].join('.');

				if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
					if (valuesPerStack[key] === undefined) {
						valuesPerStack[key] = [];
					}

					data = datasets[datasetIndex].data;
					for (i = 0, ilen = data.length; i < ilen; i++) {
						var values = valuesPerStack[key];
						value = me._parseValue(data[i]);
						// invalid, hidden and negative values are ignored
						if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) {
							continue;
						}
						values[i] = values[i] || 0;
						values[i] += value.max;
					}
				}
			}

			helpers$1.each(valuesPerStack, function(valuesForType) {
				if (valuesForType.length > 0) {
					var minVal = helpers$1.min(valuesForType);
					var maxVal = helpers$1.max(valuesForType);
					me.min = Math.min(me.min, minVal);
					me.max = Math.max(me.max, maxVal);
				}
			});

		} else {
			for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) {
				meta = chart.getDatasetMeta(datasetIndex);
				if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
					data = datasets[datasetIndex].data;
					for (i = 0, ilen = data.length; i < ilen; i++) {
						value = me._parseValue(data[i]);
						// invalid, hidden and negative values are ignored
						if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) {
							continue;
						}

						me.min = Math.min(value.min, me.min);
						me.max = Math.max(value.max, me.max);

						if (value.min !== 0) {
							me.minNotZero = Math.min(value.min, me.minNotZero);
						}
					}
				}
			}
		}

		me.min = helpers$1.isFinite(me.min) ? me.min : null;
		me.max = helpers$1.isFinite(me.max) ? me.max : null;
		me.minNotZero = helpers$1.isFinite(me.minNotZero) ? me.minNotZero : null;

		// Common base implementation to handle ticks.min, ticks.max
		this.handleTickRangeOptions();
	},

	handleTickRangeOptions: function() {
		var me = this;
		var tickOpts = me.options.ticks;
		var DEFAULT_MIN = 1;
		var DEFAULT_MAX = 10;

		me.min = nonNegativeOrDefault(tickOpts.min, me.min);
		me.max = nonNegativeOrDefault(tickOpts.max, me.max);

		if (me.min === me.max) {
			if (me.min !== 0 && me.min !== null) {
				me.min = Math.pow(10, Math.floor(log10(me.min)) - 1);
				me.max = Math.pow(10, Math.floor(log10(me.max)) + 1);
			} else {
				me.min = DEFAULT_MIN;
				me.max = DEFAULT_MAX;
			}
		}
		if (me.min === null) {
			me.min = Math.pow(10, Math.floor(log10(me.max)) - 1);
		}
		if (me.max === null) {
			me.max = me.min !== 0
				? Math.pow(10, Math.floor(log10(me.min)) + 1)
				: DEFAULT_MAX;
		}
		if (me.minNotZero === null) {
			if (me.min > 0) {
				me.minNotZero = me.min;
			} else if (me.max < 1) {
				me.minNotZero = Math.pow(10, Math.floor(log10(me.max)));
			} else {
				me.minNotZero = DEFAULT_MIN;
			}
		}
	},

	buildTicks: function() {
		var me = this;
		var tickOpts = me.options.ticks;
		var reverse = !me.isHorizontal();

		var generationOptions = {
			min: nonNegativeOrDefault(tickOpts.min),
			max: nonNegativeOrDefault(tickOpts.max)
		};
		var ticks = me.ticks = generateTicks$1(generationOptions, me);

		// At this point, we need to update our max and min given the tick values since we have expanded the
		// range of the scale
		me.max = helpers$1.max(ticks);
		me.min = helpers$1.min(ticks);

		if (tickOpts.reverse) {
			reverse = !reverse;
			me.start = me.max;
			me.end = me.min;
		} else {
			me.start = me.min;
			me.end = me.max;
		}
		if (reverse) {
			ticks.reverse();
		}
	},

	convertTicksToLabels: function() {
		this.tickValues = this.ticks.slice();

		core_scale.prototype.convertTicksToLabels.call(this);
	},

	// Get the correct tooltip label
	getLabelForIndex: function(index, datasetIndex) {
		return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]);
	},

	getPixelForTick: function(index) {
		var ticks = this.tickValues;
		if (index < 0 || index > ticks.length - 1) {
			return null;
		}
		return this.getPixelForValue(ticks[index]);
	},

	/**
	 * Returns the value of the first tick.
	 * @param {number} value - The minimum not zero value.
	 * @return {number} The first tick value.
	 * @private
	 */
	_getFirstTickValue: function(value) {
		var exp = Math.floor(log10(value));
		var significand = Math.floor(value / Math.pow(10, exp));

		return significand * Math.pow(10, exp);
	},

	_configure: function() {
		var me = this;
		var start = me.min;
		var offset = 0;

		core_scale.prototype._configure.call(me);

		if (start === 0) {
			start = me._getFirstTickValue(me.minNotZero);
			offset = valueOrDefault$b(me.options.ticks.fontSize, core_defaults.global.defaultFontSize) / me._length;
		}

		me._startValue = log10(start);
		me._valueOffset = offset;
		me._valueRange = (log10(me.max) - log10(start)) / (1 - offset);
	},

	getPixelForValue: function(value) {
		var me = this;
		var decimal = 0;

		value = +me.getRightValue(value);

		if (value > me.min && value > 0) {
			decimal = (log10(value) - me._startValue) / me._valueRange + me._valueOffset;
		}
		return me.getPixelForDecimal(decimal);
	},

	getValueForPixel: function(pixel) {
		var me = this;
		var decimal = me.getDecimalForPixel(pixel);
		return decimal === 0 && me.min === 0
			? 0
			: Math.pow(10, me._startValue + (decimal - me._valueOffset) * me._valueRange);
	}
});

// INTERNAL: static default options, registered in src/index.js
var _defaults$2 = defaultConfig$2;
scale_logarithmic._defaults = _defaults$2;

var valueOrDefault$c = helpers$1.valueOrDefault;
var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault;
var resolve$4 = helpers$1.options.resolve;

var defaultConfig$3 = {
	display: true,

	// Boolean - Whether to animate scaling the chart from the centre
	animate: true,
	position: 'chartArea',

	angleLines: {
		display: true,
		color: 'rgba(0,0,0,0.1)',
		lineWidth: 1,
		borderDash: [],
		borderDashOffset: 0.0
	},

	gridLines: {
		circular: false
	},

	// label settings
	ticks: {
		// Boolean - Show a backdrop to the scale label
		showLabelBackdrop: true,

		// String - The colour of the label backdrop
		backdropColor: 'rgba(255,255,255,0.75)',

		// Number - The backdrop padding above & below the label in pixels
		backdropPaddingY: 2,

		// Number - The backdrop padding to the side of the label in pixels
		backdropPaddingX: 2,

		callback: core_ticks.formatters.linear
	},

	pointLabels: {
		// Boolean - if true, show point labels
		display: true,

		// Number - Point label font size in pixels
		fontSize: 10,

		// Function - Used to convert point labels
		callback: function(label) {
			return label;
		}
	}
};

function getTickBackdropHeight(opts) {
	var tickOpts = opts.ticks;

	if (tickOpts.display && opts.display) {
		return valueOrDefault$c(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2;
	}
	return 0;
}

function measureLabelSize(ctx, lineHeight, label) {
	if (helpers$1.isArray(label)) {
		return {
			w: helpers$1.longestText(ctx, ctx.font, label),
			h: label.length * lineHeight
		};
	}

	return {
		w: ctx.measureText(label).width,
		h: lineHeight
	};
}

function determineLimits(angle, pos, size, min, max) {
	if (angle === min || angle === max) {
		return {
			start: pos - (size / 2),
			end: pos + (size / 2)
		};
	} else if (angle < min || angle > max) {
		return {
			start: pos - size,
			end: pos
		};
	}

	return {
		start: pos,
		end: pos + size
	};
}

/**
 * Helper function to fit a radial linear scale with point labels
 */
function fitWithPointLabels(scale) {

	// Right, this is really confusing and there is a lot of maths going on here
	// The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
	//
	// Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
	//
	// Solution:
	//
	// We assume the radius of the polygon is half the size of the canvas at first
	// at each index we check if the text overlaps.
	//
	// Where it does, we store that angle and that index.
	//
	// After finding the largest index and angle we calculate how much we need to remove
	// from the shape radius to move the point inwards by that x.
	//
	// We average the left and right distances to get the maximum shape radius that can fit in the box
	// along with labels.
	//
	// Once we have that, we can find the centre point for the chart, by taking the x text protrusion
	// on each side, removing that from the size, halving it and adding the left x protrusion width.
	//
	// This will mean we have a shape fitted to the canvas, as large as it can be with the labels
	// and position it in the most space efficient manner
	//
	// https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif

	var plFont = helpers$1.options._parseFont(scale.options.pointLabels);

	// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
	// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
	var furthestLimits = {
		l: 0,
		r: scale.width,
		t: 0,
		b: scale.height - scale.paddingTop
	};
	var furthestAngles = {};
	var i, textSize, pointPosition;

	scale.ctx.font = plFont.string;
	scale._pointLabelSizes = [];

	var valueCount = scale.chart.data.labels.length;
	for (i = 0; i < valueCount; i++) {
		pointPosition = scale.getPointPosition(i, scale.drawingArea + 5);
		textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i]);
		scale._pointLabelSizes[i] = textSize;

		// Add quarter circle to make degree 0 mean top of circle
		var angleRadians = scale.getIndexAngle(i);
		var angle = helpers$1.toDegrees(angleRadians) % 360;
		var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
		var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);

		if (hLimits.start < furthestLimits.l) {
			furthestLimits.l = hLimits.start;
			furthestAngles.l = angleRadians;
		}

		if (hLimits.end > furthestLimits.r) {
			furthestLimits.r = hLimits.end;
			furthestAngles.r = angleRadians;
		}

		if (vLimits.start < furthestLimits.t) {
			furthestLimits.t = vLimits.start;
			furthestAngles.t = angleRadians;
		}

		if (vLimits.end > furthestLimits.b) {
			furthestLimits.b = vLimits.end;
			furthestAngles.b = angleRadians;
		}
	}

	scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles);
}

function getTextAlignForAngle(angle) {
	if (angle === 0 || angle === 180) {
		return 'center';
	} else if (angle < 180) {
		return 'left';
	}

	return 'right';
}

function fillText(ctx, text, position, lineHeight) {
	var y = position.y + lineHeight / 2;
	var i, ilen;

	if (helpers$1.isArray(text)) {
		for (i = 0, ilen = text.length; i < ilen; ++i) {
			ctx.fillText(text[i], position.x, y);
			y += lineHeight;
		}
	} else {
		ctx.fillText(text, position.x, y);
	}
}

function adjustPointPositionForLabelHeight(angle, textSize, position) {
	if (angle === 90 || angle === 270) {
		position.y -= (textSize.h / 2);
	} else if (angle > 270 || angle < 90) {
		position.y -= textSize.h;
	}
}

function drawPointLabels(scale) {
	var ctx = scale.ctx;
	var opts = scale.options;
	var pointLabelOpts = opts.pointLabels;
	var tickBackdropHeight = getTickBackdropHeight(opts);
	var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
	var plFont = helpers$1.options._parseFont(pointLabelOpts);

	ctx.save();

	ctx.font = plFont.string;
	ctx.textBaseline = 'middle';

	for (var i = scale.chart.data.labels.length - 1; i >= 0; i--) {
		// Extra pixels out for some label spacing
		var extra = (i === 0 ? tickBackdropHeight / 2 : 0);
		var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5);

		// Keep this in loop since we may support array properties here
		var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor);
		ctx.fillStyle = pointLabelFontColor;

		var angleRadians = scale.getIndexAngle(i);
		var angle = helpers$1.toDegrees(angleRadians);
		ctx.textAlign = getTextAlignForAngle(angle);
		adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
		fillText(ctx, scale.pointLabels[i], pointLabelPosition, plFont.lineHeight);
	}
	ctx.restore();
}

function drawRadiusLine(scale, gridLineOpts, radius, index) {
	var ctx = scale.ctx;
	var circular = gridLineOpts.circular;
	var valueCount = scale.chart.data.labels.length;
	var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1);
	var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1);
	var pointPosition;

	if ((!circular && !valueCount) || !lineColor || !lineWidth) {
		return;
	}

	ctx.save();
	ctx.strokeStyle = lineColor;
	ctx.lineWidth = lineWidth;
	if (ctx.setLineDash) {
		ctx.setLineDash(gridLineOpts.borderDash || []);
		ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0;
	}

	ctx.beginPath();
	if (circular) {
		// Draw circular arcs between the points
		ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
	} else {
		// Draw straight lines connecting each index
		pointPosition = scale.getPointPosition(0, radius);
		ctx.moveTo(pointPosition.x, pointPosition.y);

		for (var i = 1; i < valueCount; i++) {
			pointPosition = scale.getPointPosition(i, radius);
			ctx.lineTo(pointPosition.x, pointPosition.y);
		}
	}
	ctx.closePath();
	ctx.stroke();
	ctx.restore();
}

function numberOrZero(param) {
	return helpers$1.isNumber(param) ? param : 0;
}

var scale_radialLinear = scale_linearbase.extend({
	setDimensions: function() {
		var me = this;

		// Set the unconstrained dimension before label rotation
		me.width = me.maxWidth;
		me.height = me.maxHeight;
		me.paddingTop = getTickBackdropHeight(me.options) / 2;
		me.xCenter = Math.floor(me.width / 2);
		me.yCenter = Math.floor((me.height - me.paddingTop) / 2);
		me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2;
	},

	determineDataLimits: function() {
		var me = this;
		var chart = me.chart;
		var min = Number.POSITIVE_INFINITY;
		var max = Number.NEGATIVE_INFINITY;

		helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) {
			if (chart.isDatasetVisible(datasetIndex)) {
				var meta = chart.getDatasetMeta(datasetIndex);

				helpers$1.each(dataset.data, function(rawValue, index) {
					var value = +me.getRightValue(rawValue);
					if (isNaN(value) || meta.data[index].hidden) {
						return;
					}

					min = Math.min(value, min);
					max = Math.max(value, max);
				});
			}
		});

		me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
		me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);

		// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
		me.handleTickRangeOptions();
	},

	// Returns the maximum number of ticks based on the scale dimension
	_computeTickLimit: function() {
		return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
	},

	convertTicksToLabels: function() {
		var me = this;

		scale_linearbase.prototype.convertTicksToLabels.call(me);

		// Point labels
		me.pointLabels = me.chart.data.labels.map(function() {
			var label = helpers$1.callback(me.options.pointLabels.callback, arguments, me);
			return label || label === 0 ? label : '';
		});
	},

	getLabelForIndex: function(index, datasetIndex) {
		return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
	},

	fit: function() {
		var me = this;
		var opts = me.options;

		if (opts.display && opts.pointLabels.display) {
			fitWithPointLabels(me);
		} else {
			me.setCenterPoint(0, 0, 0, 0);
		}
	},

	/**
	 * Set radius reductions and determine new radius and center point
	 * @private
	 */
	setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
		var me = this;
		var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
		var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
		var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
		var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b);

		radiusReductionLeft = numberOrZero(radiusReductionLeft);
		radiusReductionRight = numberOrZero(radiusReductionRight);
		radiusReductionTop = numberOrZero(radiusReductionTop);
		radiusReductionBottom = numberOrZero(radiusReductionBottom);

		me.drawingArea = Math.min(
			Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
			Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
		me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
	},

	setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
		var me = this;
		var maxRight = me.width - rightMovement - me.drawingArea;
		var maxLeft = leftMovement + me.drawingArea;
		var maxTop = topMovement + me.drawingArea;
		var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea;

		me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left);
		me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop);
	},

	getIndexAngle: function(index) {
		var chart = this.chart;
		var angleMultiplier = 360 / chart.data.labels.length;
		var options = chart.options || {};
		var startAngle = options.startAngle || 0;

		// Start from the top instead of right, so remove a quarter of the circle
		var angle = (index * angleMultiplier + startAngle) % 360;

		return (angle < 0 ? angle + 360 : angle) * Math.PI * 2 / 360;
	},

	getDistanceFromCenterForValue: function(value) {
		var me = this;

		if (helpers$1.isNullOrUndef(value)) {
			return NaN;
		}

		// Take into account half font size + the yPadding of the top value
		var scalingFactor = me.drawingArea / (me.max - me.min);
		if (me.options.ticks.reverse) {
			return (me.max - value) * scalingFactor;
		}
		return (value - me.min) * scalingFactor;
	},

	getPointPosition: function(index, distanceFromCenter) {
		var me = this;
		var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
		return {
			x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter,
			y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter
		};
	},

	getPointPositionForValue: function(index, value) {
		return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
	},

	getBasePosition: function(index) {
		var me = this;
		var min = me.min;
		var max = me.max;

		return me.getPointPositionForValue(index || 0,
			me.beginAtZero ? 0 :
			min < 0 && max < 0 ? max :
			min > 0 && max > 0 ? min :
			0);
	},

	/**
	 * @private
	 */
	_drawGrid: function() {
		var me = this;
		var ctx = me.ctx;
		var opts = me.options;
		var gridLineOpts = opts.gridLines;
		var angleLineOpts = opts.angleLines;
		var lineWidth = valueOrDefault$c(angleLineOpts.lineWidth, gridLineOpts.lineWidth);
		var lineColor = valueOrDefault$c(angleLineOpts.color, gridLineOpts.color);
		var i, offset, position;

		if (opts.pointLabels.display) {
			drawPointLabels(me);
		}

		if (gridLineOpts.display) {
			helpers$1.each(me.ticks, function(label, index) {
				if (index !== 0) {
					offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
					drawRadiusLine(me, gridLineOpts, offset, index);
				}
			});
		}

		if (angleLineOpts.display && lineWidth && lineColor) {
			ctx.save();
			ctx.lineWidth = lineWidth;
			ctx.strokeStyle = lineColor;
			if (ctx.setLineDash) {
				ctx.setLineDash(resolve$4([angleLineOpts.borderDash, gridLineOpts.borderDash, []]));
				ctx.lineDashOffset = resolve$4([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]);
			}

			for (i = me.chart.data.labels.length - 1; i >= 0; i--) {
				offset = me.getDistanceFromCenterForValue(opts.ticks.reverse ? me.min : me.max);
				position = me.getPointPosition(i, offset);
				ctx.beginPath();
				ctx.moveTo(me.xCenter, me.yCenter);
				ctx.lineTo(position.x, position.y);
				ctx.stroke();
			}

			ctx.restore();
		}
	},

	/**
	 * @private
	 */
	_drawLabels: function() {
		var me = this;
		var ctx = me.ctx;
		var opts = me.options;
		var tickOpts = opts.ticks;

		if (!tickOpts.display) {
			return;
		}

		var startAngle = me.getIndexAngle(0);
		var tickFont = helpers$1.options._parseFont(tickOpts);
		var tickFontColor = valueOrDefault$c(tickOpts.fontColor, core_defaults.global.defaultFontColor);
		var offset, width;

		ctx.save();
		ctx.font = tickFont.string;
		ctx.translate(me.xCenter, me.yCenter);
		ctx.rotate(startAngle);
		ctx.textAlign = 'center';
		ctx.textBaseline = 'middle';

		helpers$1.each(me.ticks, function(label, index) {
			if (index === 0 && !tickOpts.reverse) {
				return;
			}

			offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);

			if (tickOpts.showLabelBackdrop) {
				width = ctx.measureText(label).width;
				ctx.fillStyle = tickOpts.backdropColor;

				ctx.fillRect(
					-width / 2 - tickOpts.backdropPaddingX,
					-offset - tickFont.size / 2 - tickOpts.backdropPaddingY,
					width + tickOpts.backdropPaddingX * 2,
					tickFont.size + tickOpts.backdropPaddingY * 2
				);
			}

			ctx.fillStyle = tickFontColor;
			ctx.fillText(label, 0, -offset);
		});

		ctx.restore();
	},

	/**
	 * @private
	 */
	_drawTitle: helpers$1.noop
});

// INTERNAL: static default options, registered in src/index.js
var _defaults$3 = defaultConfig$3;
scale_radialLinear._defaults = _defaults$3;

var deprecated$1 = helpers$1._deprecated;
var resolve$5 = helpers$1.options.resolve;
var valueOrDefault$d = helpers$1.valueOrDefault;

// Integer constants are from the ES6 spec.
var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;

var INTERVALS = {
	millisecond: {
		common: true,
		size: 1,
		steps: 1000
	},
	second: {
		common: true,
		size: 1000,
		steps: 60
	},
	minute: {
		common: true,
		size: 60000,
		steps: 60
	},
	hour: {
		common: true,
		size: 3600000,
		steps: 24
	},
	day: {
		common: true,
		size: 86400000,
		steps: 30
	},
	week: {
		common: false,
		size: 604800000,
		steps: 4
	},
	month: {
		common: true,
		size: 2.628e9,
		steps: 12
	},
	quarter: {
		common: false,
		size: 7.884e9,
		steps: 4
	},
	year: {
		common: true,
		size: 3.154e10
	}
};

var UNITS = Object.keys(INTERVALS);

function sorter(a, b) {
	return a - b;
}

function arrayUnique(items) {
	var hash = {};
	var out = [];
	var i, ilen, item;

	for (i = 0, ilen = items.length; i < ilen; ++i) {
		item = items[i];
		if (!hash[item]) {
			hash[item] = true;
			out.push(item);
		}
	}

	return out;
}

function getMin(options) {
	return helpers$1.valueOrDefault(options.time.min, options.ticks.min);
}

function getMax(options) {
	return helpers$1.valueOrDefault(options.time.max, options.ticks.max);
}

/**
 * Returns an array of {time, pos} objects used to interpolate a specific `time` or position
 * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
 * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
 * extremity (left + width or top + height). Note that it would be more optimized to directly
 * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
 * to create the lookup table. The table ALWAYS contains at least two items: min and max.
 *
 * @param {number[]} timestamps - timestamps sorted from lowest to highest.
 * @param {string} distribution - If 'linear', timestamps will be spread linearly along the min
 * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
 * If 'series', timestamps will be positioned at the same distance from each other. In this
 * case, only timestamps that break the time linearity are registered, meaning that in the
 * best case, all timestamps are linear, the table contains only min and max.
 */
function buildLookupTable(timestamps, min, max, distribution) {
	if (distribution === 'linear' || !timestamps.length) {
		return [
			{time: min, pos: 0},
			{time: max, pos: 1}
		];
	}

	var table = [];
	var items = [min];
	var i, ilen, prev, curr, next;

	for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
		curr = timestamps[i];
		if (curr > min && curr < max) {
			items.push(curr);
		}
	}

	items.push(max);

	for (i = 0, ilen = items.length; i < ilen; ++i) {
		next = items[i + 1];
		prev = items[i - 1];
		curr = items[i];

		// only add points that breaks the scale linearity
		if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
			table.push({time: curr, pos: i / (ilen - 1)});
		}
	}

	return table;
}

// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
function lookup(table, key, value) {
	var lo = 0;
	var hi = table.length - 1;
	var mid, i0, i1;

	while (lo >= 0 && lo <= hi) {
		mid = (lo + hi) >> 1;
		i0 = table[mid - 1] || null;
		i1 = table[mid];

		if (!i0) {
			// given value is outside table (before first item)
			return {lo: null, hi: i1};
		} else if (i1[key] < value) {
			lo = mid + 1;
		} else if (i0[key] > value) {
			hi = mid - 1;
		} else {
			return {lo: i0, hi: i1};
		}
	}

	// given value is outside table (after last item)
	return {lo: i1, hi: null};
}

/**
 * Linearly interpolates the given source `value` using the table items `skey` values and
 * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
 * returns the position for a timestamp equal to 42. If value is out of bounds, values at
 * index [0, 1] or [n - 1, n] are used for the interpolation.
 */
function interpolate$1(table, skey, sval, tkey) {
	var range = lookup(table, skey, sval);

	// Note: the lookup table ALWAYS contains at least 2 items (min and max)
	var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
	var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;

	var span = next[skey] - prev[skey];
	var ratio = span ? (sval - prev[skey]) / span : 0;
	var offset = (next[tkey] - prev[tkey]) * ratio;

	return prev[tkey] + offset;
}

function toTimestamp(scale, input) {
	var adapter = scale._adapter;
	var options = scale.options.time;
	var parser = options.parser;
	var format = parser || options.format;
	var value = input;

	if (typeof parser === 'function') {
		value = parser(value);
	}

	// Only parse if its not a timestamp already
	if (!helpers$1.isFinite(value)) {
		value = typeof format === 'string'
			? adapter.parse(value, format)
			: adapter.parse(value);
	}

	if (value !== null) {
		return +value;
	}

	// Labels are in an incompatible format and no `parser` has been provided.
	// The user might still use the deprecated `format` option for parsing.
	if (!parser && typeof format === 'function') {
		value = format(input);

		// `format` could return something else than a timestamp, if so, parse it
		if (!helpers$1.isFinite(value)) {
			value = adapter.parse(value);
		}
	}

	return value;
}

function parse(scale, input) {
	if (helpers$1.isNullOrUndef(input)) {
		return null;
	}

	var options = scale.options.time;
	var value = toTimestamp(scale, scale.getRightValue(input));
	if (value === null) {
		return value;
	}

	if (options.round) {
		value = +scale._adapter.startOf(value, options.round);
	}

	return value;
}

/**
 * Figures out what unit results in an appropriate number of auto-generated ticks
 */
function determineUnitForAutoTicks(minUnit, min, max, capacity) {
	var ilen = UNITS.length;
	var i, interval, factor;

	for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
		interval = INTERVALS[UNITS[i]];
		factor = interval.steps ? interval.steps : MAX_INTEGER;

		if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
			return UNITS[i];
		}
	}

	return UNITS[ilen - 1];
}

/**
 * Figures out what unit to format a set of ticks with
 */
function determineUnitForFormatting(scale, numTicks, minUnit, min, max) {
	var i, unit;

	for (i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) {
		unit = UNITS[i];
		if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) {
			return unit;
		}
	}

	return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
}

function determineMajorUnit(unit) {
	for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
		if (INTERVALS[UNITS[i]].common) {
			return UNITS[i];
		}
	}
}

/**
 * Generates a maximum of `capacity` timestamps between min and max, rounded to the
 * `minor` unit using the given scale time `options`.
 * Important: this method can return ticks outside the min and max range, it's the
 * responsibility of the calling code to clamp values if needed.
 */
function generate(scale, min, max, capacity) {
	var adapter = scale._adapter;
	var options = scale.options;
	var timeOpts = options.time;
	var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
	var stepSize = resolve$5([timeOpts.stepSize, timeOpts.unitStepSize, 1]);
	var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
	var first = min;
	var ticks = [];
	var time;

	// For 'week' unit, handle the first day of week option
	if (weekday) {
		first = +adapter.startOf(first, 'isoWeek', weekday);
	}

	// Align first ticks on unit
	first = +adapter.startOf(first, weekday ? 'day' : minor);

	// Prevent browser from freezing in case user options request millions of milliseconds
	if (adapter.diff(max, min, minor) > 100000 * stepSize) {
		throw min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor;
	}

	for (time = first; time < max; time = +adapter.add(time, stepSize, minor)) {
		ticks.push(time);
	}

	if (time === max || options.bounds === 'ticks') {
		ticks.push(time);
	}

	return ticks;
}

/**
 * Returns the start and end offsets from edges in the form of {start, end}
 * where each value is a relative width to the scale and ranges between 0 and 1.
 * They add extra margins on the both sides by scaling down the original scale.
 * Offsets are added when the `offset` option is true.
 */
function computeOffsets(table, ticks, min, max, options) {
	var start = 0;
	var end = 0;
	var first, last;

	if (options.offset && ticks.length) {
		first = interpolate$1(table, 'time', ticks[0], 'pos');
		if (ticks.length === 1) {
			start = 1 - first;
		} else {
			start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2;
		}
		last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos');
		if (ticks.length === 1) {
			end = last;
		} else {
			end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2;
		}
	}

	return {start: start, end: end, factor: 1 / (start + 1 + end)};
}

function setMajorTicks(scale, ticks, map, majorUnit) {
	var adapter = scale._adapter;
	var first = +adapter.startOf(ticks[0].value, majorUnit);
	var last = ticks[ticks.length - 1].value;
	var major, index;

	for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) {
		index = map[major];
		if (index >= 0) {
			ticks[index].major = true;
		}
	}
	return ticks;
}

function ticksFromTimestamps(scale, values, majorUnit) {
	var ticks = [];
	var map = {};
	var ilen = values.length;
	var i, value;

	for (i = 0; i < ilen; ++i) {
		value = values[i];
		map[value] = i;

		ticks.push({
			value: value,
			major: false
		});
	}

	// We set the major ticks separately from the above loop because calling startOf for every tick
	// is expensive when there is a large number of ticks
	return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit);
}

var defaultConfig$4 = {
	position: 'bottom',

	/**
	 * Data distribution along the scale:
	 * - 'linear': data are spread according to their time (distances can vary),
	 * - 'series': data are spread at the same distance from each other.
	 * @see https://github.com/chartjs/Chart.js/pull/4507
	 * @since 2.7.0
	 */
	distribution: 'linear',

	/**
	 * Scale boundary strategy (bypassed by min/max time options)
	 * - `data`: make sure data are fully visible, ticks outside are removed
	 * - `ticks`: make sure ticks are fully visible, data outside are truncated
	 * @see https://github.com/chartjs/Chart.js/pull/4556
	 * @since 2.7.0
	 */
	bounds: 'data',

	adapters: {},
	time: {
		parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
		unit: false, // false == automatic or override with week, month, year, etc.
		round: false, // none, or override with week, month, year, etc.
		displayFormat: false, // DEPRECATED
		isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/
		minUnit: 'millisecond',
		displayFormats: {}
	},
	ticks: {
		autoSkip: false,

		/**
		 * Ticks generation input values:
		 * - 'auto': generates "optimal" ticks based on scale size and time options.
		 * - 'data': generates ticks from data (including labels from data {t|x|y} objects).
		 * - 'labels': generates ticks from user given `data.labels` values ONLY.
		 * @see https://github.com/chartjs/Chart.js/pull/4507
		 * @since 2.7.0
		 */
		source: 'auto',

		major: {
			enabled: false
		}
	}
};

var scale_time = core_scale.extend({
	initialize: function() {
		this.mergeTicksOptions();
		core_scale.prototype.initialize.call(this);
	},

	update: function() {
		var me = this;
		var options = me.options;
		var time = options.time || (options.time = {});
		var adapter = me._adapter = new core_adapters._date(options.adapters.date);

		// DEPRECATIONS: output a message only one time per update
		deprecated$1('time scale', time.format, 'time.format', 'time.parser');
		deprecated$1('time scale', time.min, 'time.min', 'ticks.min');
		deprecated$1('time scale', time.max, 'time.max', 'ticks.max');

		// Backward compatibility: before introducing adapter, `displayFormats` was
		// supposed to contain *all* unit/string pairs but this can't be resolved
		// when loading the scale (adapters are loaded afterward), so let's populate
		// missing formats on update
		helpers$1.mergeIf(time.displayFormats, adapter.formats());

		return core_scale.prototype.update.apply(me, arguments);
	},

	/**
	 * Allows data to be referenced via 't' attribute
	 */
	getRightValue: function(rawValue) {
		if (rawValue && rawValue.t !== undefined) {
			rawValue = rawValue.t;
		}
		return core_scale.prototype.getRightValue.call(this, rawValue);
	},

	determineDataLimits: function() {
		var me = this;
		var chart = me.chart;
		var adapter = me._adapter;
		var options = me.options;
		var unit = options.time.unit || 'day';
		var min = MAX_INTEGER;
		var max = MIN_INTEGER;
		var timestamps = [];
		var datasets = [];
		var labels = [];
		var i, j, ilen, jlen, data, timestamp, labelsAdded;
		var dataLabels = me._getLabels();

		for (i = 0, ilen = dataLabels.length; i < ilen; ++i) {
			labels.push(parse(me, dataLabels[i]));
		}

		for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
			if (chart.isDatasetVisible(i)) {
				data = chart.data.datasets[i].data;

				// Let's consider that all data have the same format.
				if (helpers$1.isObject(data[0])) {
					datasets[i] = [];

					for (j = 0, jlen = data.length; j < jlen; ++j) {
						timestamp = parse(me, data[j]);
						timestamps.push(timestamp);
						datasets[i][j] = timestamp;
					}
				} else {
					datasets[i] = labels.slice(0);
					if (!labelsAdded) {
						timestamps = timestamps.concat(labels);
						labelsAdded = true;
					}
				}
			} else {
				datasets[i] = [];
			}
		}

		if (labels.length) {
			min = Math.min(min, labels[0]);
			max = Math.max(max, labels[labels.length - 1]);
		}

		if (timestamps.length) {
			timestamps = ilen > 1 ? arrayUnique(timestamps).sort(sorter) : timestamps.sort(sorter);
			min = Math.min(min, timestamps[0]);
			max = Math.max(max, timestamps[timestamps.length - 1]);
		}

		min = parse(me, getMin(options)) || min;
		max = parse(me, getMax(options)) || max;

		// In case there is no valid min/max, set limits based on unit time option
		min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min;
		max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max;

		// Make sure that max is strictly higher than min (required by the lookup table)
		me.min = Math.min(min, max);
		me.max = Math.max(min + 1, max);

		// PRIVATE
		me._table = [];
		me._timestamps = {
			data: timestamps,
			datasets: datasets,
			labels: labels
		};
	},

	buildTicks: function() {
		var me = this;
		var min = me.min;
		var max = me.max;
		var options = me.options;
		var tickOpts = options.ticks;
		var timeOpts = options.time;
		var timestamps = me._timestamps;
		var ticks = [];
		var capacity = me.getLabelCapacity(min);
		var source = tickOpts.source;
		var distribution = options.distribution;
		var i, ilen, timestamp;

		if (source === 'data' || (source === 'auto' && distribution === 'series')) {
			timestamps = timestamps.data;
		} else if (source === 'labels') {
			timestamps = timestamps.labels;
		} else {
			timestamps = generate(me, min, max, capacity);
		}

		if (options.bounds === 'ticks' && timestamps.length) {
			min = timestamps[0];
			max = timestamps[timestamps.length - 1];
		}

		// Enforce limits with user min/max options
		min = parse(me, getMin(options)) || min;
		max = parse(me, getMax(options)) || max;

		// Remove ticks outside the min/max range
		for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
			timestamp = timestamps[i];
			if (timestamp >= min && timestamp <= max) {
				ticks.push(timestamp);
			}
		}

		me.min = min;
		me.max = max;

		// PRIVATE
		// determineUnitForFormatting relies on the number of ticks so we don't use it when
		// autoSkip is enabled because we don't yet know what the final number of ticks will be
		me._unit = timeOpts.unit || (tickOpts.autoSkip
			? determineUnitForAutoTicks(timeOpts.minUnit, me.min, me.max, capacity)
			: determineUnitForFormatting(me, ticks.length, timeOpts.minUnit, me.min, me.max));
		me._majorUnit = !tickOpts.major.enabled || me._unit === 'year' ? undefined
			: determineMajorUnit(me._unit);
		me._table = buildLookupTable(me._timestamps.data, min, max, distribution);
		me._offsets = computeOffsets(me._table, ticks, min, max, options);

		if (tickOpts.reverse) {
			ticks.reverse();
		}

		return ticksFromTimestamps(me, ticks, me._majorUnit);
	},

	getLabelForIndex: function(index, datasetIndex) {
		var me = this;
		var adapter = me._adapter;
		var data = me.chart.data;
		var timeOpts = me.options.time;
		var label = data.labels && index < data.labels.length ? data.labels[index] : '';
		var value = data.datasets[datasetIndex].data[index];

		if (helpers$1.isObject(value)) {
			label = me.getRightValue(value);
		}
		if (timeOpts.tooltipFormat) {
			return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat);
		}
		if (typeof label === 'string') {
			return label;
		}
		return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime);
	},

	/**
	 * Function to format an individual tick mark
	 * @private
	 */
	tickFormatFunction: function(time, index, ticks, format) {
		var me = this;
		var adapter = me._adapter;
		var options = me.options;
		var formats = options.time.displayFormats;
		var minorFormat = formats[me._unit];
		var majorUnit = me._majorUnit;
		var majorFormat = formats[majorUnit];
		var tick = ticks[index];
		var tickOpts = options.ticks;
		var major = majorUnit && majorFormat && tick && tick.major;
		var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat);
		var nestedTickOpts = major ? tickOpts.major : tickOpts.minor;
		var formatter = resolve$5([
			nestedTickOpts.callback,
			nestedTickOpts.userCallback,
			tickOpts.callback,
			tickOpts.userCallback
		]);

		return formatter ? formatter(label, index, ticks) : label;
	},

	convertTicksToLabels: function(ticks) {
		var labels = [];
		var i, ilen;

		for (i = 0, ilen = ticks.length; i < ilen; ++i) {
			labels.push(this.tickFormatFunction(ticks[i].value, i, ticks));
		}

		return labels;
	},

	/**
	 * @private
	 */
	getPixelForOffset: function(time) {
		var me = this;
		var offsets = me._offsets;
		var pos = interpolate$1(me._table, 'time', time, 'pos');
		return me.getPixelForDecimal((offsets.start + pos) * offsets.factor);
	},

	getPixelForValue: function(value, index, datasetIndex) {
		var me = this;
		var time = null;

		if (index !== undefined && datasetIndex !== undefined) {
			time = me._timestamps.datasets[datasetIndex][index];
		}

		if (time === null) {
			time = parse(me, value);
		}

		if (time !== null) {
			return me.getPixelForOffset(time);
		}
	},

	getPixelForTick: function(index) {
		var ticks = this.getTicks();
		return index >= 0 && index < ticks.length ?
			this.getPixelForOffset(ticks[index].value) :
			null;
	},

	getValueForPixel: function(pixel) {
		var me = this;
		var offsets = me._offsets;
		var pos = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
		var time = interpolate$1(me._table, 'pos', pos, 'time');

		// DEPRECATION, we should return time directly
		return me._adapter._create(time);
	},

	/**
	 * @private
	 */
	_getLabelSize: function(label) {
		var me = this;
		var ticksOpts = me.options.ticks;
		var tickLabelWidth = me.ctx.measureText(label).width;
		var angle = helpers$1.toRadians(me.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation);
		var cosRotation = Math.cos(angle);
		var sinRotation = Math.sin(angle);
		var tickFontSize = valueOrDefault$d(ticksOpts.fontSize, core_defaults.global.defaultFontSize);

		return {
			w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation),
			h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation)
		};
	},

	/**
	 * Crude approximation of what the label width might be
	 * @private
	 */
	getLabelWidth: function(label) {
		return this._getLabelSize(label).w;
	},

	/**
	 * @private
	 */
	getLabelCapacity: function(exampleTime) {
		var me = this;
		var timeOpts = me.options.time;
		var displayFormats = timeOpts.displayFormats;

		// pick the longest format (milliseconds) for guestimation
		var format = displayFormats[timeOpts.unit] || displayFormats.millisecond;
		var exampleLabel = me.tickFormatFunction(exampleTime, 0, ticksFromTimestamps(me, [exampleTime], me._majorUnit), format);
		var size = me._getLabelSize(exampleLabel);
		var capacity = Math.floor(me.isHorizontal() ? me.width / size.w : me.height / size.h);

		if (me.options.offset) {
			capacity--;
		}

		return capacity > 0 ? capacity : 1;
	}
});

// INTERNAL: static default options, registered in src/index.js
var _defaults$4 = defaultConfig$4;
scale_time._defaults = _defaults$4;

var scales = {
	category: scale_category,
	linear: scale_linear,
	logarithmic: scale_logarithmic,
	radialLinear: scale_radialLinear,
	time: scale_time
};

var FORMATS = {
	datetime: 'MMM D, YYYY, h:mm:ss a',
	millisecond: 'h:mm:ss.SSS a',
	second: 'h:mm:ss a',
	minute: 'h:mm a',
	hour: 'hA',
	day: 'MMM D',
	week: 'll',
	month: 'MMM YYYY',
	quarter: '[Q]Q - YYYY',
	year: 'YYYY'
};

core_adapters._date.override(typeof moment === 'function' ? {
	_id: 'moment', // DEBUG ONLY

	formats: function() {
		return FORMATS;
	},

	parse: function(value, format) {
		if (typeof value === 'string' && typeof format === 'string') {
			value = moment(value, format);
		} else if (!(value instanceof moment)) {
			value = moment(value);
		}
		return value.isValid() ? value.valueOf() : null;
	},

	format: function(time, format) {
		return moment(time).format(format);
	},

	add: function(time, amount, unit) {
		return moment(time).add(amount, unit).valueOf();
	},

	diff: function(max, min, unit) {
		return moment(max).diff(moment(min), unit);
	},

	startOf: function(time, unit, weekday) {
		time = moment(time);
		if (unit === 'isoWeek') {
			return time.isoWeekday(weekday).valueOf();
		}
		return time.startOf(unit).valueOf();
	},

	endOf: function(time, unit) {
		return moment(time).endOf(unit).valueOf();
	},

	// DEPRECATIONS

	/**
	 * Provided for backward compatibility with scale.getValueForPixel().
	 * @deprecated since version 2.8.0
	 * @todo remove at version 3
	 * @private
	 */
	_create: function(time) {
		return moment(time);
	},
} : {});

core_defaults._set('global', {
	plugins: {
		filler: {
			propagate: true
		}
	}
});

var mappers = {
	dataset: function(source) {
		var index = source.fill;
		var chart = source.chart;
		var meta = chart.getDatasetMeta(index);
		var visible = meta && chart.isDatasetVisible(index);
		var points = (visible && meta.dataset._children) || [];
		var length = points.length || 0;

		return !length ? null : function(point, i) {
			return (i < length && points[i]._view) || null;
		};
	},

	boundary: function(source) {
		var boundary = source.boundary;
		var x = boundary ? boundary.x : null;
		var y = boundary ? boundary.y : null;

		if (helpers$1.isArray(boundary)) {
			return function(point, i) {
				return boundary[i];
			};
		}

		return function(point) {
			return {
				x: x === null ? point.x : x,
				y: y === null ? point.y : y,
			};
		};
	}
};

// @todo if (fill[0] === '#')
function decodeFill(el, index, count) {
	var model = el._model || {};
	var fill = model.fill;
	var target;

	if (fill === undefined) {
		fill = !!model.backgroundColor;
	}

	if (fill === false || fill === null) {
		return false;
	}

	if (fill === true) {
		return 'origin';
	}

	target = parseFloat(fill, 10);
	if (isFinite(target) && Math.floor(target) === target) {
		if (fill[0] === '-' || fill[0] === '+') {
			target = index + target;
		}

		if (target === index || target < 0 || target >= count) {
			return false;
		}

		return target;
	}

	switch (fill) {
	// compatibility
	case 'bottom':
		return 'start';
	case 'top':
		return 'end';
	case 'zero':
		return 'origin';
	// supported boundaries
	case 'origin':
	case 'start':
	case 'end':
		return fill;
	// invalid fill values
	default:
		return false;
	}
}

function computeLinearBoundary(source) {
	var model = source.el._model || {};
	var scale = source.el._scale || {};
	var fill = source.fill;
	var target = null;
	var horizontal;

	if (isFinite(fill)) {
		return null;
	}

	// Backward compatibility: until v3, we still need to support boundary values set on
	// the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
	// controllers might still use it (e.g. the Smith chart).

	if (fill === 'start') {
		target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
	} else if (fill === 'end') {
		target = model.scaleTop === undefined ? scale.top : model.scaleTop;
	} else if (model.scaleZero !== undefined) {
		target = model.scaleZero;
	} else if (scale.getBasePixel) {
		target = scale.getBasePixel();
	}

	if (target !== undefined && target !== null) {
		if (target.x !== undefined && target.y !== undefined) {
			return target;
		}

		if (helpers$1.isFinite(target)) {
			horizontal = scale.isHorizontal();
			return {
				x: horizontal ? target : null,
				y: horizontal ? null : target
			};
		}
	}

	return null;
}

function computeCircularBoundary(source) {
	var scale = source.el._scale;
	var options = scale.options;
	var length = scale.chart.data.labels.length;
	var fill = source.fill;
	var target = [];
	var start, end, center, i, point;

	if (!length) {
		return null;
	}

	start = options.ticks.reverse ? scale.max : scale.min;
	end = options.ticks.reverse ? scale.min : scale.max;
	center = scale.getPointPositionForValue(0, start);
	for (i = 0; i < length; ++i) {
		point = fill === 'start' || fill === 'end'
			? scale.getPointPositionForValue(i, fill === 'start' ? start : end)
			: scale.getBasePosition(i);
		if (options.gridLines.circular) {
			point.cx = center.x;
			point.cy = center.y;
			point.angle = scale.getIndexAngle(i) - Math.PI / 2;
		}
		target.push(point);
	}
	return target;
}

function computeBoundary(source) {
	var scale = source.el._scale || {};

	if (scale.getPointPositionForValue) {
		return computeCircularBoundary(source);
	}
	return computeLinearBoundary(source);
}

function resolveTarget(sources, index, propagate) {
	var source = sources[index];
	var fill = source.fill;
	var visited = [index];
	var target;

	if (!propagate) {
		return fill;
	}

	while (fill !== false && visited.indexOf(fill) === -1) {
		if (!isFinite(fill)) {
			return fill;
		}

		target = sources[fill];
		if (!target) {
			return false;
		}

		if (target.visible) {
			return fill;
		}

		visited.push(fill);
		fill = target.fill;
	}

	return false;
}

function createMapper(source) {
	var fill = source.fill;
	var type = 'dataset';

	if (fill === false) {
		return null;
	}

	if (!isFinite(fill)) {
		type = 'boundary';
	}

	return mappers[type](source);
}

function isDrawable(point) {
	return point && !point.skip;
}

function drawArea(ctx, curve0, curve1, len0, len1) {
	var i, cx, cy, r;

	if (!len0 || !len1) {
		return;
	}

	// building first area curve (normal)
	ctx.moveTo(curve0[0].x, curve0[0].y);
	for (i = 1; i < len0; ++i) {
		helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
	}

	if (curve1[0].angle !== undefined) {
		cx = curve1[0].cx;
		cy = curve1[0].cy;
		r = Math.sqrt(Math.pow(curve1[0].x - cx, 2) + Math.pow(curve1[0].y - cy, 2));
		for (i = len1 - 1; i > 0; --i) {
			ctx.arc(cx, cy, r, curve1[i].angle, curve1[i - 1].angle, true);
		}
		return;
	}

	// joining the two area curves
	ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);

	// building opposite area curve (reverse)
	for (i = len1 - 1; i > 0; --i) {
		helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
	}
}

function doFill(ctx, points, mapper, view, color, loop) {
	var count = points.length;
	var span = view.spanGaps;
	var curve0 = [];
	var curve1 = [];
	var len0 = 0;
	var len1 = 0;
	var i, ilen, index, p0, p1, d0, d1, loopOffset;

	ctx.beginPath();

	for (i = 0, ilen = count; i < ilen; ++i) {
		index = i % count;
		p0 = points[index]._view;
		p1 = mapper(p0, index, view);
		d0 = isDrawable(p0);
		d1 = isDrawable(p1);

		if (loop && loopOffset === undefined && d0) {
			loopOffset = i + 1;
			ilen = count + loopOffset;
		}

		if (d0 && d1) {
			len0 = curve0.push(p0);
			len1 = curve1.push(p1);
		} else if (len0 && len1) {
			if (!span) {
				drawArea(ctx, curve0, curve1, len0, len1);
				len0 = len1 = 0;
				curve0 = [];
				curve1 = [];
			} else {
				if (d0) {
					curve0.push(p0);
				}
				if (d1) {
					curve1.push(p1);
				}
			}
		}
	}

	drawArea(ctx, curve0, curve1, len0, len1);

	ctx.closePath();
	ctx.fillStyle = color;
	ctx.fill();
}

var plugin_filler = {
	id: 'filler',

	afterDatasetsUpdate: function(chart, options) {
		var count = (chart.data.datasets || []).length;
		var propagate = options.propagate;
		var sources = [];
		var meta, i, el, source;

		for (i = 0; i < count; ++i) {
			meta = chart.getDatasetMeta(i);
			el = meta.dataset;
			source = null;

			if (el && el._model && el instanceof elements.Line) {
				source = {
					visible: chart.isDatasetVisible(i),
					fill: decodeFill(el, i, count),
					chart: chart,
					el: el
				};
			}

			meta.$filler = source;
			sources.push(source);
		}

		for (i = 0; i < count; ++i) {
			source = sources[i];
			if (!source) {
				continue;
			}

			source.fill = resolveTarget(sources, i, propagate);
			source.boundary = computeBoundary(source);
			source.mapper = createMapper(source);
		}
	},

	beforeDatasetsDraw: function(chart) {
		var metasets = chart._getSortedVisibleDatasetMetas();
		var ctx = chart.ctx;
		var meta, i, el, view, points, mapper, color;

		for (i = metasets.length - 1; i >= 0; --i) {
			meta = metasets[i].$filler;

			if (!meta || !meta.visible) {
				continue;
			}

			el = meta.el;
			view = el._view;
			points = el._children || [];
			mapper = meta.mapper;
			color = view.backgroundColor || core_defaults.global.defaultColor;

			if (mapper && color && points.length) {
				helpers$1.canvas.clipArea(ctx, chart.chartArea);
				doFill(ctx, points, mapper, view, color, el._loop);
				helpers$1.canvas.unclipArea(ctx);
			}
		}
	}
};

var getRtlHelper$1 = helpers$1.rtl.getRtlAdapter;
var noop$1 = helpers$1.noop;
var valueOrDefault$e = helpers$1.valueOrDefault;

core_defaults._set('global', {
	legend: {
		display: true,
		position: 'top',
		align: 'center',
		fullWidth: true,
		reverse: false,
		weight: 1000,

		// a callback that will handle
		onClick: function(e, legendItem) {
			var index = legendItem.datasetIndex;
			var ci = this.chart;
			var meta = ci.getDatasetMeta(index);

			// See controller.isDatasetVisible comment
			meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;

			// We hid a dataset ... rerender the chart
			ci.update();
		},

		onHover: null,
		onLeave: null,

		labels: {
			boxWidth: 40,
			padding: 10,
			// Generates labels shown in the legend
			// Valid properties to return:
			// text : text to display
			// fillStyle : fill of coloured box
			// strokeStyle: stroke of coloured box
			// hidden : if this legend item refers to a hidden item
			// lineCap : cap style for line
			// lineDash
			// lineDashOffset :
			// lineJoin :
			// lineWidth :
			generateLabels: function(chart) {
				var datasets = chart.data.datasets;
				var options = chart.options.legend || {};
				var usePointStyle = options.labels && options.labels.usePointStyle;

				return chart._getSortedDatasetMetas().map(function(meta) {
					var style = meta.controller.getStyle(usePointStyle ? 0 : undefined);

					return {
						text: datasets[meta.index].label,
						fillStyle: style.backgroundColor,
						hidden: !chart.isDatasetVisible(meta.index),
						lineCap: style.borderCapStyle,
						lineDash: style.borderDash,
						lineDashOffset: style.borderDashOffset,
						lineJoin: style.borderJoinStyle,
						lineWidth: style.borderWidth,
						strokeStyle: style.borderColor,
						pointStyle: style.pointStyle,
						rotation: style.rotation,

						// Below is extra data used for toggling the datasets
						datasetIndex: meta.index
					};
				}, this);
			}
		}
	},

	legendCallback: function(chart) {
		var list = document.createElement('ul');
		var datasets = chart.data.datasets;
		var i, ilen, listItem, listItemSpan;

		list.setAttribute('class', chart.id + '-legend');

		for (i = 0, ilen = datasets.length; i < ilen; i++) {
			listItem = list.appendChild(document.createElement('li'));
			listItemSpan = listItem.appendChild(document.createElement('span'));
			listItemSpan.style.backgroundColor = datasets[i].backgroundColor;
			if (datasets[i].label) {
				listItem.appendChild(document.createTextNode(datasets[i].label));
			}
		}

		return list.outerHTML;
	}
});

/**
 * Helper function to get the box width based on the usePointStyle option
 * @param {object} labelopts - the label options on the legend
 * @param {number} fontSize - the label font size
 * @return {number} width of the color box area
 */
function getBoxWidth(labelOpts, fontSize) {
	return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ?
		fontSize :
		labelOpts.boxWidth;
}

/**
 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
 */
var Legend = core_element.extend({

	initialize: function(config) {
		var me = this;
		helpers$1.extend(me, config);

		// Contains hit boxes for each dataset (in dataset order)
		me.legendHitBoxes = [];

		/**
 		 * @private
 		 */
		me._hoveredItem = null;

		// Are we in doughnut mode which has a different data type
		me.doughnutMode = false;
	},

	// These methods are ordered by lifecycle. Utilities then follow.
	// Any function defined here is inherited by all legend types.
	// Any function can be extended by the legend type

	beforeUpdate: noop$1,
	update: function(maxWidth, maxHeight, margins) {
		var me = this;

		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
		me.beforeUpdate();

		// Absorb the master measurements
		me.maxWidth = maxWidth;
		me.maxHeight = maxHeight;
		me.margins = margins;

		// Dimensions
		me.beforeSetDimensions();
		me.setDimensions();
		me.afterSetDimensions();
		// Labels
		me.beforeBuildLabels();
		me.buildLabels();
		me.afterBuildLabels();

		// Fit
		me.beforeFit();
		me.fit();
		me.afterFit();
		//
		me.afterUpdate();

		return me.minSize;
	},
	afterUpdate: noop$1,

	//

	beforeSetDimensions: noop$1,
	setDimensions: function() {
		var me = this;
		// Set the unconstrained dimension before label rotation
		if (me.isHorizontal()) {
			// Reset position before calculating rotation
			me.width = me.maxWidth;
			me.left = 0;
			me.right = me.width;
		} else {
			me.height = me.maxHeight;

			// Reset position before calculating rotation
			me.top = 0;
			me.bottom = me.height;
		}

		// Reset padding
		me.paddingLeft = 0;
		me.paddingTop = 0;
		me.paddingRight = 0;
		me.paddingBottom = 0;

		// Reset minSize
		me.minSize = {
			width: 0,
			height: 0
		};
	},
	afterSetDimensions: noop$1,

	//

	beforeBuildLabels: noop$1,
	buildLabels: function() {
		var me = this;
		var labelOpts = me.options.labels || {};
		var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || [];

		if (labelOpts.filter) {
			legendItems = legendItems.filter(function(item) {
				return labelOpts.filter(item, me.chart.data);
			});
		}

		if (me.options.reverse) {
			legendItems.reverse();
		}

		me.legendItems = legendItems;
	},
	afterBuildLabels: noop$1,

	//

	beforeFit: noop$1,
	fit: function() {
		var me = this;
		var opts = me.options;
		var labelOpts = opts.labels;
		var display = opts.display;

		var ctx = me.ctx;

		var labelFont = helpers$1.options._parseFont(labelOpts);
		var fontSize = labelFont.size;

		// Reset hit boxes
		var hitboxes = me.legendHitBoxes = [];

		var minSize = me.minSize;
		var isHorizontal = me.isHorizontal();

		if (isHorizontal) {
			minSize.width = me.maxWidth; // fill all the width
			minSize.height = display ? 10 : 0;
		} else {
			minSize.width = display ? 10 : 0;
			minSize.height = me.maxHeight; // fill all the height
		}

		// Increase sizes here
		if (!display) {
			me.width = minSize.width = me.height = minSize.height = 0;
			return;
		}
		ctx.font = labelFont.string;

		if (isHorizontal) {
			// Labels

			// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
			var lineWidths = me.lineWidths = [0];
			var totalHeight = 0;

			ctx.textAlign = 'left';
			ctx.textBaseline = 'middle';

			helpers$1.each(me.legendItems, function(legendItem, i) {
				var boxWidth = getBoxWidth(labelOpts, fontSize);
				var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;

				if (i === 0 || lineWidths[lineWidths.length - 1] + width + 2 * labelOpts.padding > minSize.width) {
					totalHeight += fontSize + labelOpts.padding;
					lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0;
				}

				// Store the hitbox width and height here. Final position will be updated in `draw`
				hitboxes[i] = {
					left: 0,
					top: 0,
					width: width,
					height: fontSize
				};

				lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
			});

			minSize.height += totalHeight;

		} else {
			var vPadding = labelOpts.padding;
			var columnWidths = me.columnWidths = [];
			var columnHeights = me.columnHeights = [];
			var totalWidth = labelOpts.padding;
			var currentColWidth = 0;
			var currentColHeight = 0;

			helpers$1.each(me.legendItems, function(legendItem, i) {
				var boxWidth = getBoxWidth(labelOpts, fontSize);
				var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;

				// If too tall, go to new column
				if (i > 0 && currentColHeight + fontSize + 2 * vPadding > minSize.height) {
					totalWidth += currentColWidth + labelOpts.padding;
					columnWidths.push(currentColWidth); // previous column width
					columnHeights.push(currentColHeight);
					currentColWidth = 0;
					currentColHeight = 0;
				}

				// Get max width
				currentColWidth = Math.max(currentColWidth, itemWidth);
				currentColHeight += fontSize + vPadding;

				// Store the hitbox width and height here. Final position will be updated in `draw`
				hitboxes[i] = {
					left: 0,
					top: 0,
					width: itemWidth,
					height: fontSize
				};
			});

			totalWidth += currentColWidth;
			columnWidths.push(currentColWidth);
			columnHeights.push(currentColHeight);
			minSize.width += totalWidth;
		}

		me.width = minSize.width;
		me.height = minSize.height;
	},
	afterFit: noop$1,

	// Shared Methods
	isHorizontal: function() {
		return this.options.position === 'top' || this.options.position === 'bottom';
	},

	// Actually draw the legend on the canvas
	draw: function() {
		var me = this;
		var opts = me.options;
		var labelOpts = opts.labels;
		var globalDefaults = core_defaults.global;
		var defaultColor = globalDefaults.defaultColor;
		var lineDefault = globalDefaults.elements.line;
		var legendHeight = me.height;
		var columnHeights = me.columnHeights;
		var legendWidth = me.width;
		var lineWidths = me.lineWidths;

		if (!opts.display) {
			return;
		}

		var rtlHelper = getRtlHelper$1(opts.rtl, me.left, me.minSize.width);
		var ctx = me.ctx;
		var fontColor = valueOrDefault$e(labelOpts.fontColor, globalDefaults.defaultFontColor);
		var labelFont = helpers$1.options._parseFont(labelOpts);
		var fontSize = labelFont.size;
		var cursor;

		// Canvas setup
		ctx.textAlign = rtlHelper.textAlign('left');
		ctx.textBaseline = 'middle';
		ctx.lineWidth = 0.5;
		ctx.strokeStyle = fontColor; // for strikethrough effect
		ctx.fillStyle = fontColor; // render in correct colour
		ctx.font = labelFont.string;

		var boxWidth = getBoxWidth(labelOpts, fontSize);
		var hitboxes = me.legendHitBoxes;

		// current position
		var drawLegendBox = function(x, y, legendItem) {
			if (isNaN(boxWidth) || boxWidth <= 0) {
				return;
			}

			// Set the ctx for the box
			ctx.save();

			var lineWidth = valueOrDefault$e(legendItem.lineWidth, lineDefault.borderWidth);
			ctx.fillStyle = valueOrDefault$e(legendItem.fillStyle, defaultColor);
			ctx.lineCap = valueOrDefault$e(legendItem.lineCap, lineDefault.borderCapStyle);
			ctx.lineDashOffset = valueOrDefault$e(legendItem.lineDashOffset, lineDefault.borderDashOffset);
			ctx.lineJoin = valueOrDefault$e(legendItem.lineJoin, lineDefault.borderJoinStyle);
			ctx.lineWidth = lineWidth;
			ctx.strokeStyle = valueOrDefault$e(legendItem.strokeStyle, defaultColor);

			if (ctx.setLineDash) {
				// IE 9 and 10 do not support line dash
				ctx.setLineDash(valueOrDefault$e(legendItem.lineDash, lineDefault.borderDash));
			}

			if (labelOpts && labelOpts.usePointStyle) {
				// Recalculate x and y for drawPoint() because its expecting
				// x and y to be center of figure (instead of top left)
				var radius = boxWidth * Math.SQRT2 / 2;
				var centerX = rtlHelper.xPlus(x, boxWidth / 2);
				var centerY = y + fontSize / 2;

				// Draw pointStyle as legend symbol
				helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY, legendItem.rotation);
			} else {
				// Draw box as legend symbol
				ctx.fillRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize);
				if (lineWidth !== 0) {
					ctx.strokeRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize);
				}
			}

			ctx.restore();
		};

		var fillText = function(x, y, legendItem, textWidth) {
			var halfFontSize = fontSize / 2;
			var xLeft = rtlHelper.xPlus(x, boxWidth + halfFontSize);
			var yMiddle = y + halfFontSize;

			ctx.fillText(legendItem.text, xLeft, yMiddle);

			if (legendItem.hidden) {
				// Strikethrough the text if hidden
				ctx.beginPath();
				ctx.lineWidth = 2;
				ctx.moveTo(xLeft, yMiddle);
				ctx.lineTo(rtlHelper.xPlus(xLeft, textWidth), yMiddle);
				ctx.stroke();
			}
		};

		var alignmentOffset = function(dimension, blockSize) {
			switch (opts.align) {
			case 'start':
				return labelOpts.padding;
			case 'end':
				return dimension - blockSize;
			default: // center
				return (dimension - blockSize + labelOpts.padding) / 2;
			}
		};

		// Horizontal
		var isHorizontal = me.isHorizontal();
		if (isHorizontal) {
			cursor = {
				x: me.left + alignmentOffset(legendWidth, lineWidths[0]),
				y: me.top + labelOpts.padding,
				line: 0
			};
		} else {
			cursor = {
				x: me.left + labelOpts.padding,
				y: me.top + alignmentOffset(legendHeight, columnHeights[0]),
				line: 0
			};
		}

		helpers$1.rtl.overrideTextDirection(me.ctx, opts.textDirection);

		var itemHeight = fontSize + labelOpts.padding;
		helpers$1.each(me.legendItems, function(legendItem, i) {
			var textWidth = ctx.measureText(legendItem.text).width;
			var width = boxWidth + (fontSize / 2) + textWidth;
			var x = cursor.x;
			var y = cursor.y;

			rtlHelper.setWidth(me.minSize.width);

			// Use (me.left + me.minSize.width) and (me.top + me.minSize.height)
			// instead of me.right and me.bottom because me.width and me.height
			// may have been changed since me.minSize was calculated
			if (isHorizontal) {
				if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) {
					y = cursor.y += itemHeight;
					cursor.line++;
					x = cursor.x = me.left + alignmentOffset(legendWidth, lineWidths[cursor.line]);
				}
			} else if (i > 0 && y + itemHeight > me.top + me.minSize.height) {
				x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
				cursor.line++;
				y = cursor.y = me.top + alignmentOffset(legendHeight, columnHeights[cursor.line]);
			}

			var realX = rtlHelper.x(x);

			drawLegendBox(realX, y, legendItem);

			hitboxes[i].left = rtlHelper.leftForLtr(realX, hitboxes[i].width);
			hitboxes[i].top = y;

			// Fill the actual label
			fillText(realX, y, legendItem, textWidth);

			if (isHorizontal) {
				cursor.x += width + labelOpts.padding;
			} else {
				cursor.y += itemHeight;
			}
		});

		helpers$1.rtl.restoreTextDirection(me.ctx, opts.textDirection);
	},

	/**
	 * @private
	 */
	_getLegendItemAt: function(x, y) {
		var me = this;
		var i, hitBox, lh;

		if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
			// See if we are touching one of the dataset boxes
			lh = me.legendHitBoxes;
			for (i = 0; i < lh.length; ++i) {
				hitBox = lh[i];

				if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
					// Touching an element
					return me.legendItems[i];
				}
			}
		}

		return null;
	},

	/**
	 * Handle an event
	 * @private
	 * @param {IEvent} event - The event to handle
	 */
	handleEvent: function(e) {
		var me = this;
		var opts = me.options;
		var type = e.type === 'mouseup' ? 'click' : e.type;
		var hoveredItem;

		if (type === 'mousemove') {
			if (!opts.onHover && !opts.onLeave) {
				return;
			}
		} else if (type === 'click') {
			if (!opts.onClick) {
				return;
			}
		} else {
			return;
		}

		// Chart event already has relative position in it
		hoveredItem = me._getLegendItemAt(e.x, e.y);

		if (type === 'click') {
			if (hoveredItem && opts.onClick) {
				// use e.native for backwards compatibility
				opts.onClick.call(me, e.native, hoveredItem);
			}
		} else {
			if (opts.onLeave && hoveredItem !== me._hoveredItem) {
				if (me._hoveredItem) {
					opts.onLeave.call(me, e.native, me._hoveredItem);
				}
				me._hoveredItem = hoveredItem;
			}

			if (opts.onHover && hoveredItem) {
				// use e.native for backwards compatibility
				opts.onHover.call(me, e.native, hoveredItem);
			}
		}
	}
});

function createNewLegendAndAttach(chart, legendOpts) {
	var legend = new Legend({
		ctx: chart.ctx,
		options: legendOpts,
		chart: chart
	});

	core_layouts.configure(chart, legend, legendOpts);
	core_layouts.addBox(chart, legend);
	chart.legend = legend;
}

var plugin_legend = {
	id: 'legend',

	/**
	 * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
	 * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
	 * the plugin, which one will be re-exposed in the chart.js file.
	 * https://github.com/chartjs/Chart.js/pull/2640
	 * @private
	 */
	_element: Legend,

	beforeInit: function(chart) {
		var legendOpts = chart.options.legend;

		if (legendOpts) {
			createNewLegendAndAttach(chart, legendOpts);
		}
	},

	beforeUpdate: function(chart) {
		var legendOpts = chart.options.legend;
		var legend = chart.legend;

		if (legendOpts) {
			helpers$1.mergeIf(legendOpts, core_defaults.global.legend);

			if (legend) {
				core_layouts.configure(chart, legend, legendOpts);
				legend.options = legendOpts;
			} else {
				createNewLegendAndAttach(chart, legendOpts);
			}
		} else if (legend) {
			core_layouts.removeBox(chart, legend);
			delete chart.legend;
		}
	},

	afterEvent: function(chart, e) {
		var legend = chart.legend;
		if (legend) {
			legend.handleEvent(e);
		}
	}
};

var noop$2 = helpers$1.noop;

core_defaults._set('global', {
	title: {
		display: false,
		fontStyle: 'bold',
		fullWidth: true,
		padding: 10,
		position: 'top',
		text: '',
		weight: 2000         // by default greater than legend (1000) to be above
	}
});

/**
 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
 */
var Title = core_element.extend({
	initialize: function(config) {
		var me = this;
		helpers$1.extend(me, config);

		// Contains hit boxes for each dataset (in dataset order)
		me.legendHitBoxes = [];
	},

	// These methods are ordered by lifecycle. Utilities then follow.

	beforeUpdate: noop$2,
	update: function(maxWidth, maxHeight, margins) {
		var me = this;

		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
		me.beforeUpdate();

		// Absorb the master measurements
		me.maxWidth = maxWidth;
		me.maxHeight = maxHeight;
		me.margins = margins;

		// Dimensions
		me.beforeSetDimensions();
		me.setDimensions();
		me.afterSetDimensions();
		// Labels
		me.beforeBuildLabels();
		me.buildLabels();
		me.afterBuildLabels();

		// Fit
		me.beforeFit();
		me.fit();
		me.afterFit();
		//
		me.afterUpdate();

		return me.minSize;

	},
	afterUpdate: noop$2,

	//

	beforeSetDimensions: noop$2,
	setDimensions: function() {
		var me = this;
		// Set the unconstrained dimension before label rotation
		if (me.isHorizontal()) {
			// Reset position before calculating rotation
			me.width = me.maxWidth;
			me.left = 0;
			me.right = me.width;
		} else {
			me.height = me.maxHeight;

			// Reset position before calculating rotation
			me.top = 0;
			me.bottom = me.height;
		}

		// Reset padding
		me.paddingLeft = 0;
		me.paddingTop = 0;
		me.paddingRight = 0;
		me.paddingBottom = 0;

		// Reset minSize
		me.minSize = {
			width: 0,
			height: 0
		};
	},
	afterSetDimensions: noop$2,

	//

	beforeBuildLabels: noop$2,
	buildLabels: noop$2,
	afterBuildLabels: noop$2,

	//

	beforeFit: noop$2,
	fit: function() {
		var me = this;
		var opts = me.options;
		var minSize = me.minSize = {};
		var isHorizontal = me.isHorizontal();
		var lineCount, textSize;

		if (!opts.display) {
			me.width = minSize.width = me.height = minSize.height = 0;
			return;
		}

		lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1;
		textSize = lineCount * helpers$1.options._parseFont(opts).lineHeight + opts.padding * 2;

		me.width = minSize.width = isHorizontal ? me.maxWidth : textSize;
		me.height = minSize.height = isHorizontal ? textSize : me.maxHeight;
	},
	afterFit: noop$2,

	// Shared Methods
	isHorizontal: function() {
		var pos = this.options.position;
		return pos === 'top' || pos === 'bottom';
	},

	// Actually draw the title block on the canvas
	draw: function() {
		var me = this;
		var ctx = me.ctx;
		var opts = me.options;

		if (!opts.display) {
			return;
		}

		var fontOpts = helpers$1.options._parseFont(opts);
		var lineHeight = fontOpts.lineHeight;
		var offset = lineHeight / 2 + opts.padding;
		var rotation = 0;
		var top = me.top;
		var left = me.left;
		var bottom = me.bottom;
		var right = me.right;
		var maxWidth, titleX, titleY;

		ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour
		ctx.font = fontOpts.string;

		// Horizontal
		if (me.isHorizontal()) {
			titleX = left + ((right - left) / 2); // midpoint of the width
			titleY = top + offset;
			maxWidth = right - left;
		} else {
			titleX = opts.position === 'left' ? left + offset : right - offset;
			titleY = top + ((bottom - top) / 2);
			maxWidth = bottom - top;
			rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
		}

		ctx.save();
		ctx.translate(titleX, titleY);
		ctx.rotate(rotation);
		ctx.textAlign = 'center';
		ctx.textBaseline = 'middle';

		var text = opts.text;
		if (helpers$1.isArray(text)) {
			var y = 0;
			for (var i = 0; i < text.length; ++i) {
				ctx.fillText(text[i], 0, y, maxWidth);
				y += lineHeight;
			}
		} else {
			ctx.fillText(text, 0, 0, maxWidth);
		}

		ctx.restore();
	}
});

function createNewTitleBlockAndAttach(chart, titleOpts) {
	var title = new Title({
		ctx: chart.ctx,
		options: titleOpts,
		chart: chart
	});

	core_layouts.configure(chart, title, titleOpts);
	core_layouts.addBox(chart, title);
	chart.titleBlock = title;
}

var plugin_title = {
	id: 'title',

	/**
	 * Backward compatibility: since 2.1.5, the title is registered as a plugin, making
	 * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
	 * the plugin, which one will be re-exposed in the chart.js file.
	 * https://github.com/chartjs/Chart.js/pull/2640
	 * @private
	 */
	_element: Title,

	beforeInit: function(chart) {
		var titleOpts = chart.options.title;

		if (titleOpts) {
			createNewTitleBlockAndAttach(chart, titleOpts);
		}
	},

	beforeUpdate: function(chart) {
		var titleOpts = chart.options.title;
		var titleBlock = chart.titleBlock;

		if (titleOpts) {
			helpers$1.mergeIf(titleOpts, core_defaults.global.title);

			if (titleBlock) {
				core_layouts.configure(chart, titleBlock, titleOpts);
				titleBlock.options = titleOpts;
			} else {
				createNewTitleBlockAndAttach(chart, titleOpts);
			}
		} else if (titleBlock) {
			core_layouts.removeBox(chart, titleBlock);
			delete chart.titleBlock;
		}
	}
};

var plugins = {};
var filler = plugin_filler;
var legend = plugin_legend;
var title = plugin_title;
plugins.filler = filler;
plugins.legend = legend;
plugins.title = title;

/**
 * @namespace Chart
 */


core_controller.helpers = helpers$1;

// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests!
core_helpers();

core_controller._adapters = core_adapters;
core_controller.Animation = core_animation;
core_controller.animationService = core_animations;
core_controller.controllers = controllers;
core_controller.DatasetController = core_datasetController;
core_controller.defaults = core_defaults;
core_controller.Element = core_element;
core_controller.elements = elements;
core_controller.Interaction = core_interaction;
core_controller.layouts = core_layouts;
core_controller.platform = platform;
core_controller.plugins = core_plugins;
core_controller.Scale = core_scale;
core_controller.scaleService = core_scaleService;
core_controller.Ticks = core_ticks;
core_controller.Tooltip = core_tooltip;

// Register built-in scales

core_controller.helpers.each(scales, function(scale, type) {
	core_controller.scaleService.registerScaleType(type, scale, scale._defaults);
});

// Load to register built-in adapters (as side effects)


// Loading built-in plugins

for (var k in plugins) {
	if (plugins.hasOwnProperty(k)) {
		core_controller.plugins.register(plugins[k]);
	}
}

core_controller.platform.initialize();

var src = core_controller;
if (typeof window !== 'undefined') {
	window.Chart = core_controller;
}

// DEPRECATIONS

/**
 * Provided for backward compatibility, not available anymore
 * @namespace Chart.Chart
 * @deprecated since version 2.8.0
 * @todo remove at version 3
 * @private
 */
core_controller.Chart = core_controller;

/**
 * Provided for backward compatibility, not available anymore
 * @namespace Chart.Legend
 * @deprecated since version 2.1.5
 * @todo remove at version 3
 * @private
 */
core_controller.Legend = plugins.legend._element;

/**
 * Provided for backward compatibility, not available anymore
 * @namespace Chart.Title
 * @deprecated since version 2.1.5
 * @todo remove at version 3
 * @private
 */
core_controller.Title = plugins.title._element;

/**
 * Provided for backward compatibility, use Chart.plugins instead
 * @namespace Chart.pluginService
 * @deprecated since version 2.1.5
 * @todo remove at version 3
 * @private
 */
core_controller.pluginService = core_controller.plugins;

/**
 * Provided for backward compatibility, inheriting from Chart.PlugingBase has no
 * effect, instead simply create/register plugins via plain JavaScript objects.
 * @interface Chart.PluginBase
 * @deprecated since version 2.5.0
 * @todo remove at version 3
 * @private
 */
core_controller.PluginBase = core_controller.Element.extend({});

/**
 * Provided for backward compatibility, use Chart.helpers.canvas instead.
 * @namespace Chart.canvasHelpers
 * @deprecated since version 2.6.0
 * @todo remove at version 3
 * @private
 */
core_controller.canvasHelpers = core_controller.helpers.canvas;

/**
 * Provided for backward compatibility, use Chart.layouts instead.
 * @namespace Chart.layoutService
 * @deprecated since version 2.7.3
 * @todo remove at version 3
 * @private
 */
core_controller.layoutService = core_controller.layouts;

/**
 * Provided for backward compatibility, not available anymore.
 * @namespace Chart.LinearScaleBase
 * @deprecated since version 2.8
 * @todo remove at version 3
 * @private
 */
core_controller.LinearScaleBase = scale_linearbase;

/**
 * Provided for backward compatibility, instead we should create a new Chart
 * by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`).
 * @deprecated since version 2.8.0
 * @todo remove at version 3
 */
core_controller.helpers.each(
	[
		'Bar',
		'Bubble',
		'Doughnut',
		'Line',
		'PolarArea',
		'Radar',
		'Scatter'
	],
	function(klass) {
		core_controller[klass] = function(ctx, cfg) {
			return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, {
				type: klass.charAt(0).toLowerCase() + klass.slice(1)
			}));
		};
	}
);

return src;

})));

;/*!
 * Pusher JavaScript Library v7.6.0
 * https://pusher.com/
 *
 * Copyright 2020, Pusher
 * Released under the MIT licence.
 */
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e=this;return"open"===this.state&&(M.defer((function(){e.socket&&e.socket.send(t)})),!0)},e.prototype.ping=function(){"open"===this.state&&this.supportsPing()&&this.socket.ping()},e.prototype.onOpen=function(){this.hooks.beforeOpen&&this.hooks.beforeOpen(this.socket,this.hooks.urls.getPath(this.key,this.options)),this.changeState("open"),this.socket.onopen=void 0},e.prototype.onError=function(t){this.emit("error",{type:"WebSocketError",error:t}),this.timeline.error(this.buildTimelineMessage({error:t.toString()}))},e.prototype.onClose=function(t){t?this.changeState("closed",{code:t.code,reason:t.reason,wasClean:t.wasClean}):this.changeState("closed"),this.unbindListeners(),this.socket=void 0},e.prototype.onMessage=function(t){this.emit("message",t)},e.prototype.onActivity=function(){this.emit("activity")},e.prototype.bindListeners=function(){var t=this;this.socket.onopen=function(){t.onOpen()},this.socket.onerror=function(e){t.onError(e)},this.socket.onclose=function(e){t.onClose(e)},this.socket.onmessage=function(e){t.onMessage(e)},this.supportsPing()&&(this.socket.onactivity=function(){t.onActivity()})},e.prototype.unbindListeners=function(){this.socket&&(this.socket.onopen=void 0,this.socket.onerror=void 0,this.socket.onclose=void 0,this.socket.onmessage=void 0,this.supportsPing()&&(this.socket.onactivity=void 0))},e.prototype.changeState=function(t,e){this.state=t,this.timeline.info(this.buildTimelineMessage({state:t,params:e})),this.emit(t,e)},e.prototype.buildTimelineMessage=function(t){return z({cid:this.id},t)},e}(pt),dt=function(){function t(t){this.hooks=t}return t.prototype.isSupported=function(t){return this.hooks.isSupported(t)},t.prototype.createConnection=function(t,e,n,r){return new ft(this.hooks,t,e,n,r)},t}(),yt=new dt({urls:st,handlesActivityChecks:!1,supportsPing:!1,isInitialized:function(){return Boolean(Ce.getWebSocketAPI())},isSupported:function(){return Boolean(Ce.getWebSocketAPI())},getSocket:function(t){return Ce.createWebSocket(t)}}),vt={urls:ct,handlesActivityChecks:!1,supportsPing:!0,isInitialized:function(){return!0}},gt=z({getSocket:function(t){return Ce.HTTPFactory.createStreamingSocket(t)}},vt),bt=z({getSocket:function(t){return Ce.HTTPFactory.createPollingSocket(t)}},vt),mt={isSupported:function(){return Ce.isXHRSupported()}},_t={ws:yt,xhr_streaming:new dt(z({},gt,mt)),xhr_polling:new dt(z({},bt,mt))},wt=new dt({file:"sockjs",urls:at,handlesActivityChecks:!0,supportsPing:!1,isSupported:function(){return!0},isInitialized:function(){return void 0!==window.SockJS},getSocket:function(t,e){return new window.SockJS(t,null,{js_path:u.getPath("sockjs",{useTLS:e.useTLS}),ignore_null_origin:e.ignoreNullOrigin})},beforeOpen:function(t,e){t.send(JSON.stringify({path:e}))}}),St={isSupported:function(t){return Ce.isXDRSupported(t.useTLS)}},kt=new dt(z({},gt,St)),Ct=new 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o=this;r=z({},r,{activityTimeout:this.pingDelay});var i=this.transport.createConnection(t,e,n,r),s=null,c=function(){i.unbind("open",c),i.bind("closed",a),s=M.now()},a=function(t){if(i.unbind("closed",a),1002===t.code||1003===t.code)o.manager.reportDeath();else if(!t.wasClean&&s){var e=M.now()-s;e<2*o.maxPingDelay&&(o.manager.reportDeath(),o.pingDelay=Math.max(e/2,o.minPingDelay))}};return i.bind("open",c),i},t.prototype.isSupported=function(t){return this.manager.isAlive()&&this.transport.isSupported(t)},t}(),At={decodeMessage:function(t){try{var e=JSON.parse(t.data),n=e.data;if("string"==typeof n)try{n=JSON.parse(e.data)}catch(t){}var r={event:e.event,channel:e.channel,data:n};return e.user_id&&(r.user_id=e.user_id),r}catch(e){throw{type:"MessageParseError",error:e,data:t.data}}},encodeMessage:function(t){return JSON.stringify(t)},processHandshake:function(t){var e=At.decodeMessage(t);if("pusher:connection_established"===e.event){if(!e.data.activity_timeout)throw"No activity timeout 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t=this;this.subscribed||(this.subscriptionPending=!0,this.subscriptionCancelled=!1,this.authorize(this.pusher.connection.socket_id,(function(e,n){e?(t.subscriptionPending=!1,Z.error(e.toString()),t.emit("pusher:subscription_error",Object.assign({},{type:"AuthError",error:e.message},e instanceof S?{status:e.status}:{}))):t.pusher.send_event("pusher:subscribe",{auth:n.auth,channel_data:n.channel_data,channel:t.name})})))},e.prototype.unsubscribe=function(){this.subscribed=!1,this.pusher.send_event("pusher:unsubscribe",{channel:this.name})},e.prototype.cancelSubscription=function(){this.subscriptionCancelled=!0},e.prototype.reinstateSubscription=function(){this.subscriptionCancelled=!1},e}(pt),Ht=function(){var t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)e.hasOwnProperty(n)&&(t[n]=e[n])})(e,n)};return function(e,n){function r(){this.constructor=e}t(e,n),e.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),Ut=function(t){function e(){return null!==t&&t.apply(this,arguments)||this}return Ht(e,t),e.prototype.authorize=function(t,e){return this.pusher.config.channelAuthorizer({channelName:this.name,socketId:t},e)},e}(Nt),Mt=function(){function t(){this.reset()}return t.prototype.get=function(t){return Object.prototype.hasOwnProperty.call(this.members,t)?{id:t,info:this.members[t]}:null},t.prototype.each=function(t){var e=this;F(this.members,(function(n,r){t(e.get(r))}))},t.prototype.setMyID=function(t){this.myID=t},t.prototype.onSubscription=function(t){this.members=t.presence.hash,this.count=t.presence.count,this.me=this.get(this.myID)},t.prototype.addMember=function(t){return null===this.get(t.user_id)&&this.count++,this.members[t.user_id]=t.user_info,this.get(t.user_id)},t.prototype.removeMember=function(t){var e=this.get(t.user_id);return e&&(delete 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Fetching a new key from the authEndpoint..."),void this.authorize(this.pusher.connection.socket_id,(function(e,s){e?Z.error("Failed to make a request to the authEndpoint: "+s+". Unable to fetch new key, so dropping encrypted event"):null!==(i=n.nacl.secretbox.open(r,o,n.key))?n.emit(t,n.getDataToEmit(i)):Z.error("Failed to decrypt event with new key. Dropping encrypted event")}));this.emit(t,this.getDataToEmit(i))}}}else Z.error("Unexpected format for encrypted event, expected object with `ciphertext` and `nonce` fields, got: "+e);else Z.debug("Received encrypted event before key has been retrieved from the authEndpoint")},e.prototype.getDataToEmit=function(t){var e=Object(Xt.decode)(t);try{return JSON.parse(e)}catch(t){return e}},e}(Ut),Vt=function(){var t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)e.hasOwnProperty(n)&&(t[n]=e[n])})(e,n)};return function(e,n){function r(){this.constructor=e}t(e,n),e.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),Qt=function(t){function e(e,n){var r=t.call(this)||this;r.state="initialized",r.connection=null,r.key=e,r.options=n,r.timeline=r.options.timeline,r.usingTLS=r.options.useTLS,r.errorCallbacks=r.buildErrorCallbacks(),r.connectionCallbacks=r.buildConnectionCallbacks(r.errorCallbacks),r.handshakeCallbacks=r.buildHandshakeCallbacks(r.errorCallbacks);var o=Ce.getNetwork();return o.bind("online",(function(){r.timeline.info({netinfo:"online"}),"connecting"!==r.state&&"unavailable"!==r.state||r.retryIn(0)})),o.bind("offline",(function(){r.timeline.info({netinfo:"offline"}),r.connection&&r.sendActivityCheck()})),r.updateStrategy(),r}return Vt(e,t),e.prototype.connect=function(){this.connection||this.runner||(this.strategy.isSupported()?(this.updateState("connecting"),this.startConnecting(),this.setUnavailableTimer()):this.updateState("failed"))},e.prototype.send=function(t){return!!this.connection&&this.connection.send(t)},e.prototype.send_event=function(t,e,n){return!!this.connection&&this.connection.send_event(t,e,n)},e.prototype.disconnect=function(){this.disconnectInternally(),this.updateState("disconnected")},e.prototype.isUsingTLS=function(){return this.usingTLS},e.prototype.startConnecting=function(){var t=this,e=function(n,r){n?t.runner=t.strategy.connect(0,e):"error"===r.action?(t.emit("error",{type:"HandshakeError",error:r.error}),t.timeline.error({handshakeError:r.error})):(t.abortConnecting(),t.handshakeCallbacks[r.action](r))};this.runner=this.strategy.connect(0,e)},e.prototype.abortConnecting=function(){this.runner&&(this.runner.abort(),this.runner=null)},e.prototype.disconnectInternally=function(){(this.abortConnecting(),this.clearRetryTimer(),this.clearUnavailableTimer(),this.connection)&&this.abandonConnection().close()},e.prototype.updateStrategy=function(){this.strategy=this.options.getStrategy({key:this.key,timeline:this.timeline,useTLS:this.usingTLS})},e.prototype.retryIn=function(t){var e=this;this.timeline.info({action:"retry",delay:t}),t>0&&this.emit("connecting_in",Math.round(t/1e3)),this.retryTimer=new H(t||0,(function(){e.disconnectInternally(),e.connect()}))},e.prototype.clearRetryTimer=function(){this.retryTimer&&(this.retryTimer.ensureAborted(),this.retryTimer=null)},e.prototype.setUnavailableTimer=function(){var t=this;this.unavailableTimer=new H(this.options.unavailableTimeout,(function(){t.updateState("unavailable")}))},e.prototype.clearUnavailableTimer=function(){this.unavailableTimer&&this.unavailableTimer.ensureAborted()},e.prototype.sendActivityCheck=function(){var t=this;this.stopActivityCheck(),this.connection.ping(),this.activityTimer=new H(this.options.pongTimeout,(function(){t.timeline.error({pong_timed_out:t.options.pongTimeout}),t.retryIn(0)}))},e.prototype.resetActivityCheck=function(){var t=this;this.stopActivityCheck(),this.connection&&!this.connection.handlesActivityChecks()&&(this.activityTimer=new H(this.activityTimeout,(function(){t.sendActivityCheck()})))},e.prototype.stopActivityCheck=function(){this.activityTimer&&this.activityTimer.ensureAborted()},e.prototype.buildConnectionCallbacks=function(t){var e=this;return z({},t,{message:function(t){e.resetActivityCheck(),e.emit("message",t)},ping:function(){e.send_event("pusher:pong",{})},activity:function(){e.resetActivityCheck()},error:function(t){e.emit("error",t)},closed:function(){e.abandonConnection(),e.shouldRetry()&&e.retryIn(1e3)}})},e.prototype.buildHandshakeCallbacks=function(t){var e=this;return z({},t,{connected:function(t){e.activityTimeout=Math.min(e.options.activityTimeout,t.activityTimeout,t.connection.activityTimeout||1/0),e.clearUnavailableTimer(),e.setConnection(t.connection),e.socket_id=e.connection.id,e.updateState("connected",{socket_id:e.socket_id})}})},e.prototype.buildErrorCallbacks=function(){var t=this,e=function(e){return function(n){n.error&&t.emit("error",{type:"WebSocketError",error:n.error}),e(n)}};return{tls_only:e((function(){t.usingTLS=!0,t.updateStrategy(),t.retryIn(0)})),refused:e((function(){t.disconnect()})),backoff:e((function(){t.retryIn(1e3)})),retry:e((function(){t.retryIn(0)}))}},e.prototype.setConnection=function(t){for(var e in this.connection=t,this.connectionCallbacks)this.connection.bind(e,this.connectionCallbacks[e]);this.resetActivityCheck()},e.prototype.abandonConnection=function(){if(this.connection){for(var t in this.stopActivityCheck(),this.connectionCallbacks)this.connection.unbind(t,this.connectionCallbacks[t]);var e=this.connection;return this.connection=null,e}},e.prototype.updateState=function(t,e){var n=this.state;if(this.state=t,n!==t){var r=t;"connected"===r&&(r+=" with new socket ID "+e.socket_id),Z.debug("State changed",n+" -> "+r),this.timeline.info({state:t,params:e}),this.emit("state_change",{previous:n,current:t}),this.emit(t,e)}},e.prototype.shouldRetry=function(){return"connecting"===this.state||"connected"===this.state},e}(pt),Yt=function(){function t(){this.channels={}}return t.prototype.add=function(t,e){return this.channels[t]||(this.channels[t]=function(t,e){if(0===t.indexOf("private-encrypted-")){if(e.config.nacl)return $t.createEncryptedChannel(t,e,e.config.nacl);var n=p("encryptedChannelSupport");throw new m("Tried to subscribe to a private-encrypted- channel but no nacl implementation available. "+n)}if(0===t.indexOf("private-"))return $t.createPrivateChannel(t,e);if(0===t.indexOf("presence-"))return $t.createPresenceChannel(t,e);if(0===t.indexOf("#"))throw new y('Cannot create a channel with name "'+t+'".');return $t.createChannel(t,e)}(t,e)),this.channels[t]},t.prototype.all=function(){return function(t){var e=[];return F(t,(function(t){e.push(t)})),e}(this.channels)},t.prototype.find=function(t){return this.channels[t]},t.prototype.remove=function(t){var e=this.channels[t];return delete this.channels[t],e},t.prototype.disconnect=function(){F(this.channels,(function(t){t.disconnect()}))},t}();var $t={createChannels:function(){return new Yt},createConnectionManager:function(t,e){return new Qt(t,e)},createChannel:function(t,e){return new Nt(t,e)},createPrivateChannel:function(t,e){return new Ut(t,e)},createPresenceChannel:function(t,e){return new Ft(t,e)},createEncryptedChannel:function(t,e,n){return new Gt(t,e,n)},createTimelineSender:function(t,e){return new It(t,e)},createHandshake:function(t,e){return new jt(t,e)},createAssistantToTheTransportManager:function(t,e,n){return new Et(t,e,n)}},Kt=function(){function t(t){this.options=t||{},this.livesLeft=this.options.lives||1/0}return t.prototype.getAssistant=function(t){return $t.createAssistantToTheTransportManager(this,t,{minPingDelay:this.options.minPingDelay,maxPingDelay:this.options.maxPingDelay})},t.prototype.isAlive=function(){return this.livesLeft>0},t.prototype.reportDeath=function(){this.livesLeft-=1},t}(),Zt=function(){function t(t,e){this.strategies=t,this.loop=Boolean(e.loop),this.failFast=Boolean(e.failFast),this.timeout=e.timeout,this.timeoutLimit=e.timeoutLimit}return t.prototype.isSupported=function(){return Q(this.strategies,M.method("isSupported"))},t.prototype.connect=function(t,e){var n=this,r=this.strategies,o=0,i=this.timeout,s=null,c=function(a,u){u?e(null,u):(o+=1,n.loop&&(o%=r.length),o<r.length?(i&&(i*=2,n.timeoutLimit&&(i=Math.min(i,n.timeoutLimit))),s=n.tryStrategy(r[o],t,{timeout:i,failFast:n.failFast},c)):e(!0))};return s=this.tryStrategy(r[o],t,{timeout:i,failFast:this.failFast},c),{abort:function(){s.abort()},forceMinPriority:function(e){t=e,s&&s.forceMinPriority(e)}}},t.prototype.tryStrategy=function(t,e,n,r){var o=null,i=null;return n.timeout>0&&(o=new H(n.timeout,(function(){i.abort(),r(!0)}))),i=t.connect(e,(function(t,e){t&&o&&o.isRunning()&&!n.failFast||(o&&o.ensureAborted(),r(t,e))})),{abort:function(){o&&o.ensureAborted(),i.abort()},forceMinPriority:function(t){i.forceMinPriority(t)}}},t}(),te=function(){function t(t){this.strategies=t}return t.prototype.isSupported=function(){return Q(this.strategies,M.method("isSupported"))},t.prototype.connect=function(t,e){return function(t,e,n){var r=W(t,(function(t,r,o,i){return t.connect(e,n(r,i))}));return{abort:function(){J(r,ee)},forceMinPriority:function(t){J(r,(function(e){e.forceMinPriority(t)}))}}}(this.strategies,t,(function(t,n){return function(r,o){n[t].error=r,r?function(t){return function(t,e){for(var n=0;n<t.length;n++)if(!e(t[n],n,t))return!1;return!0}(t,(function(t){return Boolean(t.error)}))}(n)&&e(!0):(J(n,(function(t){t.forceMinPriority(o.transport.priority)})),e(null,o))}}))},t}();function ee(t){t.error||t.aborted||(t.abort(),t.aborted=!0)}var ne=function(){function t(t,e,n){this.strategy=t,this.transports=e,this.ttl=n.ttl||18e5,this.usingTLS=n.useTLS,this.timeline=n.timeline}return t.prototype.isSupported=function(){return this.strategy.isSupported()},t.prototype.connect=function(t,e){var n=this.usingTLS,r=function(t){var e=Ce.getLocalStorage();if(e)try{var n=e[re(t)];if(n)return JSON.parse(n)}catch(e){oe(t)}return null}(n),o=[this.strategy];if(r&&r.timestamp+this.ttl>=M.now()){var i=this.transports[r.transport];i&&(this.timeline.info({cached:!0,transport:r.transport,latency:r.latency}),o.push(new Zt([i],{timeout:2*r.latency+1e3,failFast:!0})))}var s=M.now(),c=o.pop().connect(t,(function r(i,a){i?(oe(n),o.length>0?(s=M.now(),c=o.pop().connect(t,r)):e(i)):(!function(t,e,n){var r=Ce.getLocalStorage();if(r)try{r[re(t)]=K({timestamp:M.now(),transport:e,latency:n})}catch(t){}}(n,a.transport.name,M.now()-s),e(null,a))}));return{abort:function(){c.abort()},forceMinPriority:function(e){t=e,c&&c.forceMinPriority(e)}}},t}();function re(t){return"pusherTransport"+(t?"TLS":"NonTLS")}function oe(t){var e=Ce.getLocalStorage();if(e)try{delete e[re(t)]}catch(t){}}var ie=function(){function t(t,e){var n=e.delay;this.strategy=t,this.options={delay:n}}return t.prototype.isSupported=function(){return this.strategy.isSupported()},t.prototype.connect=function(t,e){var n,r=this.strategy,o=new H(this.options.delay,(function(){n=r.connect(t,e)}));return{abort:function(){o.ensureAborted(),n&&n.abort()},forceMinPriority:function(e){t=e,n&&n.forceMinPriority(e)}}},t}(),se=function(){function t(t,e,n){this.test=t,this.trueBranch=e,this.falseBranch=n}return t.prototype.isSupported=function(){return(this.test()?this.trueBranch:this.falseBranch).isSupported()},t.prototype.connect=function(t,e){return(this.test()?this.trueBranch:this.falseBranch).connect(t,e)},t}(),ce=function(){function t(t){this.strategy=t}return t.prototype.isSupported=function(){return this.strategy.isSupported()},t.prototype.connect=function(t,e){var n=this.strategy.connect(t,(function(t,r){r&&n.abort(),e(t,r)}));return n},t}();function ae(t){return function(){return t.isSupported()}}var ue,he=function(t,e,n){var r={};function o(e,o,i,s,c){var a=n(t,e,o,i,s,c);return r[e]=a,a}var i,s=Object.assign({},e,{hostNonTLS:t.wsHost+":"+t.wsPort,hostTLS:t.wsHost+":"+t.wssPort,httpPath:t.wsPath}),c=Object.assign({},s,{useTLS:!0}),a=Object.assign({},e,{hostNonTLS:t.httpHost+":"+t.httpPort,hostTLS:t.httpHost+":"+t.httpsPort,httpPath:t.httpPath}),u={loop:!0,timeout:15e3,timeoutLimit:6e4},h=new Kt({lives:2,minPingDelay:1e4,maxPingDelay:t.activityTimeout}),p=new Kt({lives:2,minPingDelay:1e4,maxPingDelay:t.activityTimeout}),l=o("ws","ws",3,s,h),f=o("wss","ws",3,c,h),d=o("sockjs","sockjs",1,a),y=o("xhr_streaming","xhr_streaming",1,a,p),v=o("xdr_streaming","xdr_streaming",1,a,p),g=o("xhr_polling","xhr_polling",1,a),b=o("xdr_polling","xdr_polling",1,a),m=new Zt([l],u),_=new Zt([f],u),w=new Zt([d],u),S=new Zt([new se(ae(y),y,v)],u),k=new Zt([new se(ae(g),g,b)],u),C=new Zt([new se(ae(S),new te([S,new ie(k,{delay:4e3})]),k)],u),P=new se(ae(C),C,w);return i=e.useTLS?new te([m,new ie(P,{delay:2e3})]):new te([m,new ie(_,{delay:2e3}),new ie(P,{delay:5e3})]),new ne(new ce(new se(ae(l),i,P)),r,{ttl:18e5,timeline:e.timeline,useTLS:e.useTLS})},pe={getRequest:function(t){var e=new window.XDomainRequest;return e.ontimeout=function(){t.emit("error",new v),t.close()},e.onerror=function(e){t.emit("error",e),t.close()},e.onprogress=function(){e.responseText&&e.responseText.length>0&&t.onChunk(200,e.responseText)},e.onload=function(){e.responseText&&e.responseText.length>0&&t.onChunk(200,e.responseText),t.emit("finished",200),t.close()},e},abortRequest:function(t){t.ontimeout=t.onerror=t.onprogress=t.onload=null,t.abort()}},le=function(){var t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)e.hasOwnProperty(n)&&(t[n]=e[n])})(e,n)};return function(e,n){function r(){this.constructor=e}t(e,n),e.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),fe=function(t){function e(e,n,r){var o=t.call(this)||this;return o.hooks=e,o.method=n,o.url=r,o}return le(e,t),e.prototype.start=function(t){var e=this;this.position=0,this.xhr=this.hooks.getRequest(this),this.unloader=function(){e.close()},Ce.addUnloadListener(this.unloader),this.xhr.open(this.method,this.url,!0),this.xhr.setRequestHeader&&this.xhr.setRequestHeader("Content-Type","application/json"),this.xhr.send(t)},e.prototype.close=function(){this.unloader&&(Ce.removeUnloadListener(this.unloader),this.unloader=null),this.xhr&&(this.hooks.abortRequest(this.xhr),this.xhr=null)},e.prototype.onChunk=function(t,e){for(;;){var n=this.advanceBuffer(e);if(!n)break;this.emit("chunk",{status:t,data:n})}this.isBufferTooLong(e)&&this.emit("buffer_too_long")},e.prototype.advanceBuffer=function(t){var e=t.slice(this.position),n=e.indexOf("\n");return-1!==n?(this.position+=n+1,e.slice(0,n)):null},e.prototype.isBufferTooLong=function(t){return this.position===t.length&&t.length>262144},e}(pt);!function(t){t[t.CONNECTING=0]="CONNECTING",t[t.OPEN=1]="OPEN",t[t.CLOSED=3]="CLOSED"}(ue||(ue={}));var de=ue,ye=1;function ve(t){var e=-1===t.indexOf("?")?"?":"&";return t+e+"t="+ +new Date+"&n="+ye++}function ge(t){return Ce.randomInt(t)}var be,me=function(){function t(t,e){this.hooks=t,this.session=ge(1e3)+"/"+function(t){for(var e=[],n=0;n<t;n++)e.push(ge(32).toString(32));return e.join("")}(8),this.location=function(t){var e=/([^\?]*)\/*(\??.*)/.exec(t);return{base:e[1],queryString:e[2]}}(e),this.readyState=de.CONNECTING,this.openStream()}return t.prototype.send=function(t){return this.sendRaw(JSON.stringify([t]))},t.prototype.ping=function(){this.hooks.sendHeartbeat(this)},t.prototype.close=function(t,e){this.onClose(t,e,!0)},t.prototype.sendRaw=function(t){if(this.readyState!==de.OPEN)return!1;try{return Ce.createSocketRequest("POST",ve((e=this.location,n=this.session,e.base+"/"+n+"/xhr_send"))).start(t),!0}catch(t){return!1}var e,n},t.prototype.reconnect=function(){this.closeStream(),this.openStream()},t.prototype.onClose=function(t,e,n){this.closeStream(),this.readyState=de.CLOSED,this.onclose&&this.onclose({code:t,reason:e,wasClean:n})},t.prototype.onChunk=function(t){var e;if(200===t.status)switch(this.readyState===de.OPEN&&this.onActivity(),t.data.slice(0,1)){case"o":e=JSON.parse(t.data.slice(1)||"{}"),this.onOpen(e);break;case"a":e=JSON.parse(t.data.slice(1)||"[]");for(var n=0;n<e.length;n++)this.onEvent(e[n]);break;case"m":e=JSON.parse(t.data.slice(1)||"null"),this.onEvent(e);break;case"h":this.hooks.onHeartbeat(this);break;case"c":e=JSON.parse(t.data.slice(1)||"[]"),this.onClose(e[0],e[1],!0)}},t.prototype.onOpen=function(t){var e,n,r;this.readyState===de.CONNECTING?(t&&t.hostname&&(this.location.base=(e=this.location.base,n=t.hostname,(r=/(https?:\/\/)([^\/:]+)((\/|:)?.*)/.exec(e))[1]+n+r[3])),this.readyState=de.OPEN,this.onopen&&this.onopen()):this.onClose(1006,"Server lost session",!0)},t.prototype.onEvent=function(t){this.readyState===de.OPEN&&this.onmessage&&this.onmessage({data:t})},t.prototype.onActivity=function(){this.onactivity&&this.onactivity()},t.prototype.onError=function(t){this.onerror&&this.onerror(t)},t.prototype.openStream=function(){var t=this;this.stream=Ce.createSocketRequest("POST",ve(this.hooks.getReceiveURL(this.location,this.session))),this.stream.bind("chunk",(function(e){t.onChunk(e)})),this.stream.bind("finished",(function(e){t.hooks.onFinished(t,e)})),this.stream.bind("buffer_too_long",(function(){t.reconnect()}));try{this.stream.start()}catch(e){M.defer((function(){t.onError(e),t.onClose(1006,"Could not start streaming",!1)}))}},t.prototype.closeStream=function(){this.stream&&(this.stream.unbind_all(),this.stream.close(),this.stream=null)},t}(),_e={getReceiveURL:function(t,e){return t.base+"/"+e+"/xhr_streaming"+t.queryString},onHeartbeat:function(t){t.sendRaw("[]")},sendHeartbeat:function(t){t.sendRaw("[]")},onFinished:function(t,e){t.onClose(1006,"Connection interrupted ("+e+")",!1)}},we={getReceiveURL:function(t,e){return t.base+"/"+e+"/xhr"+t.queryString},onHeartbeat:function(){},sendHeartbeat:function(t){t.sendRaw("[]")},onFinished:function(t,e){200===e?t.reconnect():t.onClose(1006,"Connection interrupted ("+e+")",!1)}},Se={getRequest:function(t){var e=new(Ce.getXHRAPI());return e.onreadystatechange=e.onprogress=function(){switch(e.readyState){case 3:e.responseText&&e.responseText.length>0&&t.onChunk(e.status,e.responseText);break;case 4:e.responseText&&e.responseText.length>0&&t.onChunk(e.status,e.responseText),t.emit("finished",e.status),t.close()}},e},abortRequest:function(t){t.onreadystatechange=null,t.abort()}},ke={createStreamingSocket:function(t){return this.createSocket(_e,t)},createPollingSocket:function(t){return this.createSocket(we,t)},createSocket:function(t,e){return new me(t,e)},createXHR:function(t,e){return this.createRequest(Se,t,e)},createRequest:function(t,e,n){return new fe(t,e,n)},createXDR:function(t,e){return this.createRequest(pe,t,e)}},Ce={nextAuthCallbackID:1,auth_callbacks:{},ScriptReceivers:i,DependenciesReceivers:a,getDefaultStrategy:he,Transports:Pt,transportConnectionInitializer:function(){var t=this;t.timeline.info(t.buildTimelineMessage({transport:t.name+(t.options.useTLS?"s":"")})),t.hooks.isInitialized()?t.changeState("initialized"):t.hooks.file?(t.changeState("initializing"),u.load(t.hooks.file,{useTLS:t.options.useTLS},(function(e,n){t.hooks.isInitialized()?(t.changeState("initialized"),n(!0)):(e&&t.onError(e),t.onClose(),n(!1))}))):t.onClose()},HTTPFactory:ke,TimelineTransport:rt,getXHRAPI:function(){return window.XMLHttpRequest},getWebSocketAPI:function(){return window.WebSocket||window.MozWebSocket},setup:function(t){var e=this;window.Pusher=t;var n=function(){e.onDocumentBody(t.ready)};window.JSON?n():u.load("json2",{},n)},getDocument:function(){return document},getProtocol:function(){return this.getDocument().location.protocol},getAuthorizers:function(){return{ajax:k,jsonp:tt}},onDocumentBody:function(t){var e=this;document.body?t():setTimeout((function(){e.onDocumentBody(t)}),0)},createJSONPRequest:function(t,e){return new nt(t,e)},createScriptRequest:function(t){return new et(t)},getLocalStorage:function(){try{return window.localStorage}catch(t){return}},createXHR:function(){return this.getXHRAPI()?this.createXMLHttpRequest():this.createMicrosoftXHR()},createXMLHttpRequest:function(){return new(this.getXHRAPI())},createMicrosoftXHR:function(){return new ActiveXObject("Microsoft.XMLHTTP")},getNetwork:function(){return Ot},createWebSocket:function(t){return new(this.getWebSocketAPI())(t)},createSocketRequest:function(t,e){if(this.isXHRSupported())return this.HTTPFactory.createXHR(t,e);if(this.isXDRSupported(0===e.indexOf("https:")))return this.HTTPFactory.createXDR(t,e);throw"Cross-origin HTTP requests are not supported"},isXHRSupported:function(){var t=this.getXHRAPI();return Boolean(t)&&void 0!==(new t).withCredentials},isXDRSupported:function(t){var e=t?"https:":"http:",n=this.getProtocol();return Boolean(window.XDomainRequest)&&n===e},addUnloadListener:function(t){void 0!==window.addEventListener?window.addEventListener("unload",t,!1):void 0!==window.attachEvent&&window.attachEvent("onunload",t)},removeUnloadListener:function(t){void 0!==window.addEventListener?window.removeEventListener("unload",t,!1):void 0!==window.detachEvent&&window.detachEvent("onunload",t)},randomInt:function(t){return Math.floor((window.crypto||window.msCrypto).getRandomValues(new Uint32Array(1))[0]/Math.pow(2,32)*t)}};!function(t){t[t.ERROR=3]="ERROR",t[t.INFO=6]="INFO",t[t.DEBUG=7]="DEBUG"}(be||(be={}));var Pe=be,Te=function(){function t(t,e,n){this.key=t,this.session=e,this.events=[],this.options=n||{},this.sent=0,this.uniqueID=0}return t.prototype.log=function(t,e){t<=this.options.level&&(this.events.push(z({},e,{timestamp:M.now()})),this.options.limit&&this.events.length>this.options.limit&&this.events.shift())},t.prototype.error=function(t){this.log(Pe.ERROR,t)},t.prototype.info=function(t){this.log(Pe.INFO,t)},t.prototype.debug=function(t){this.log(Pe.DEBUG,t)},t.prototype.isEmpty=function(){return 0===this.events.length},t.prototype.send=function(t,e){var n=this,r=z({session:this.session,bundle:this.sent+1,key:this.key,lib:"js",version:this.options.version,cluster:this.options.cluster,features:this.options.features,timeline:this.events},this.options.params);return this.events=[],t(r,(function(t,r){t||n.sent++,e&&e(t,r)})),!0},t.prototype.generateUniqueID=function(){return this.uniqueID++,this.uniqueID},t}(),Oe=function(){function t(t,e,n,r){this.name=t,this.priority=e,this.transport=n,this.options=r||{}}return t.prototype.isSupported=function(){return this.transport.isSupported({useTLS:this.options.useTLS})},t.prototype.connect=function(t,e){var n=this;if(!this.isSupported())return Ee(new w,e);if(this.priority<t)return Ee(new g,e);var r=!1,o=this.transport.createConnection(this.name,this.priority,this.options.key,this.options),i=null,s=function(){o.unbind("initialized",s),o.connect()},c=function(){i=$t.createHandshake(o,(function(t){r=!0,h(),e(null,t)}))},a=function(t){h(),e(t)},u=function(){var t;h(),t=K(o),e(new b(t))},h=function(){o.unbind("initialized",s),o.unbind("open",c),o.unbind("error",a),o.unbind("closed",u)};return o.bind("initialized",s),o.bind("open",c),o.bind("error",a),o.bind("closed",u),o.initialize(),{abort:function(){r||(h(),i?i.close():o.close())},forceMinPriority:function(t){r||n.priority<t&&(i?i.close():o.close())}}},t}();function Ee(t,e){return M.defer((function(){e(t)})),{abort:function(){},forceMinPriority:function(){}}}var Ae=Ce.Transports,xe=function(t,e,n,r,o,i){var s,c=Ae[n];if(!c)throw new _(n);return!(t.enabledTransports&&-1===B(t.enabledTransports,e)||t.disabledTransports&&-1!==B(t.disabledTransports,e))?(o=Object.assign({ignoreNullOrigin:t.ignoreNullOrigin},o),s=new Oe(e,r,i?i.getAssistant(c):c,o)):s=Le,s},Le={isSupported:function(){return!1},connect:function(t,e){var n=M.defer((function(){e(new w)}));return{abort:function(){n.ensureAborted()},forceMinPriority:function(){}}}},Re=function(t){if(void 0===Ce.getAuthorizers()[t.transport])throw"'"+t.transport+"' is not a recognized auth transport";return function(e,n){var o=function(t,e){var n="socket_id="+encodeURIComponent(t.socketId);for(var r in e.params)n+="&"+encodeURIComponent(r)+"="+encodeURIComponent(e.params[r]);if(null!=e.paramsProvider){var o=e.paramsProvider();for(var r in o)n+="&"+encodeURIComponent(r)+"="+encodeURIComponent(o[r])}return n}(e,t);Ce.getAuthorizers()[t.transport](Ce,o,t,r.UserAuthentication,n)}},je=function(t){if(void 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t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)e.hasOwnProperty(n)&&(t[n]=e[n])})(e,n)};return function(e,n){function r(){this.constructor=e}t(e,n),e.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),Fe=function(t){function e(e){var n=t.call(this,(function(t,e){Z.debug("No callbacks on watchlist events for "+t)}))||this;return n.pusher=e,n.bindWatchlistInternalEvent(),n}return Be(e,t),e.prototype.handleEvent=function(t){var e=this;t.data.events.forEach((function(t){e.emit(t.name,t)}))},e.prototype.bindWatchlistInternalEvent=function(){var t=this;this.pusher.connection.bind("message",(function(e){"pusher_internal:watchlist_events"===e.event&&t.handleEvent(e)}))},e}(pt);var Xe=function(){var t,e;return{promise:new Promise((function(n,r){t=n,e=r})),resolve:t,reject:e}},Je=function(){var t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof 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