gantt-engine/dist/gantt-engine.cjs.js

'use strict';

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

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var timestring = _interopDefault(require('timestring'));

function unwrapExports (x) {
	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var _global = createCommonjsModule(function (module) {
// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
var global = module.exports = typeof window != 'undefined' && window.Math == Math
  ? window : typeof self != 'undefined' && self.Math == Math ? self
  // eslint-disable-next-line no-new-func
  : Function('return this')();
if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef
});

var _global$1 = /*#__PURE__*/Object.freeze({
	default: _global,
	__moduleExports: _global
});

var _core = createCommonjsModule(function (module) {
var core = module.exports = { version: '2.5.7' };
if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef
});
var _core_1 = _core.version;

var _core$1 = /*#__PURE__*/Object.freeze({
	default: _core,
	__moduleExports: _core,
	version: _core_1
});

var _isObject = function (it) {
  return typeof it === 'object' ? it !== null : typeof it === 'function';
};

var _isObject$1 = /*#__PURE__*/Object.freeze({
	default: _isObject,
	__moduleExports: _isObject
});

var isObject = ( _isObject$1 && _isObject ) || _isObject$1;

var _anObject = function (it) {
  if (!isObject(it)) throw TypeError(it + ' is not an object!');
  return it;
};

var _anObject$1 = /*#__PURE__*/Object.freeze({
	default: _anObject,
	__moduleExports: _anObject
});

var _fails = function (exec) {
  try {
    return !!exec();
  } catch (e) {
    return true;
  }
};

var _fails$1 = /*#__PURE__*/Object.freeze({
	default: _fails,
	__moduleExports: _fails
});

var require$$1 = ( _fails$1 && _fails ) || _fails$1;

// Thank's IE8 for his funny defineProperty
var _descriptors = !require$$1(function () {
  return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
});

var _descriptors$1 = /*#__PURE__*/Object.freeze({
	default: _descriptors,
	__moduleExports: _descriptors
});

var global$1 = ( _global$1 && _global ) || _global$1;

var document = global$1.document;
// typeof document.createElement is 'object' in old IE
var is = isObject(document) && isObject(document.createElement);
var _domCreate = function (it) {
  return is ? document.createElement(it) : {};
};

var _domCreate$1 = /*#__PURE__*/Object.freeze({
	default: _domCreate,
	__moduleExports: _domCreate
});

var DESCRIPTORS = ( _descriptors$1 && _descriptors ) || _descriptors$1;

var require$$2 = ( _domCreate$1 && _domCreate ) || _domCreate$1;

var _ie8DomDefine = !DESCRIPTORS && !require$$1(function () {
  return Object.defineProperty(require$$2('div'), 'a', { get: function () { return 7; } }).a != 7;
});

var _ie8DomDefine$1 = /*#__PURE__*/Object.freeze({
	default: _ie8DomDefine,
	__moduleExports: _ie8DomDefine
});

// 7.1.1 ToPrimitive(input [, PreferredType])

// instead of the ES6 spec version, we didn't implement @@toPrimitive case
// and the second argument - flag - preferred type is a string
var _toPrimitive = function (it, S) {
  if (!isObject(it)) return it;
  var fn, val;
  if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;
  if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val;
  if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;
  throw TypeError("Can't convert object to primitive value");
};

var _toPrimitive$1 = /*#__PURE__*/Object.freeze({
	default: _toPrimitive,
	__moduleExports: _toPrimitive
});

var anObject = ( _anObject$1 && _anObject ) || _anObject$1;

var IE8_DOM_DEFINE = ( _ie8DomDefine$1 && _ie8DomDefine ) || _ie8DomDefine$1;

var toPrimitive = ( _toPrimitive$1 && _toPrimitive ) || _toPrimitive$1;

var dP = Object.defineProperty;

var f = DESCRIPTORS ? Object.defineProperty : function defineProperty(O, P, Attributes) {
  anObject(O);
  P = toPrimitive(P, true);
  anObject(Attributes);
  if (IE8_DOM_DEFINE) try {
    return dP(O, P, Attributes);
  } catch (e) { /* empty */ }
  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');
  if ('value' in Attributes) O[P] = Attributes.value;
  return O;
};

var _objectDp = {
	f: f
};

var _objectDp$1 = /*#__PURE__*/Object.freeze({
	default: _objectDp,
	__moduleExports: _objectDp,
	f: f
});

var _propertyDesc = function (bitmap, value) {
  return {
    enumerable: !(bitmap & 1),
    configurable: !(bitmap & 2),
    writable: !(bitmap & 4),
    value: value
  };
};

var _propertyDesc$1 = /*#__PURE__*/Object.freeze({
	default: _propertyDesc,
	__moduleExports: _propertyDesc
});

var dP$1 = ( _objectDp$1 && _objectDp ) || _objectDp$1;

var descriptor = ( _propertyDesc$1 && _propertyDesc ) || _propertyDesc$1;

var _hide = DESCRIPTORS ? function (object, key, value) {
  return dP$1.f(object, key, descriptor(1, value));
} : function (object, key, value) {
  object[key] = value;
  return object;
};

var _hide$1 = /*#__PURE__*/Object.freeze({
	default: _hide,
	__moduleExports: _hide
});

var hasOwnProperty = {}.hasOwnProperty;
var _has = function (it, key) {
  return hasOwnProperty.call(it, key);
};

var _has$1 = /*#__PURE__*/Object.freeze({
	default: _has,
	__moduleExports: _has
});

var id = 0;
var px = Math.random();
var _uid = function (key) {
  return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));
};

var _uid$1 = /*#__PURE__*/Object.freeze({
	default: _uid,
	__moduleExports: _uid
});

var require$$0 = ( _hide$1 && _hide ) || _hide$1;

var has = ( _has$1 && _has ) || _has$1;

var uid = ( _uid$1 && _uid ) || _uid$1;

var require$$1$1 = ( _core$1 && _core ) || _core$1;

var _redefine = createCommonjsModule(function (module) {
var SRC = uid('src');
var TO_STRING = 'toString';
var $toString = Function[TO_STRING];
var TPL = ('' + $toString).split(TO_STRING);

require$$1$1.inspectSource = function (it) {
  return $toString.call(it);
};

(module.exports = function (O, key, val, safe) {
  var isFunction = typeof val == 'function';
  if (isFunction) has(val, 'name') || require$$0(val, 'name', key);
  if (O[key] === val) return;
  if (isFunction) has(val, SRC) || require$$0(val, SRC, O[key] ? '' + O[key] : TPL.join(String(key)));
  if (O === global$1) {
    O[key] = val;
  } else if (!safe) {
    delete O[key];
    require$$0(O, key, val);
  } else if (O[key]) {
    O[key] = val;
  } else {
    require$$0(O, key, val);
  }
// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
})(Function.prototype, TO_STRING, function toString() {
  return typeof this == 'function' && this[SRC] || $toString.call(this);
});
});

var _redefine$1 = /*#__PURE__*/Object.freeze({
	default: _redefine,
	__moduleExports: _redefine
});

var _aFunction = function (it) {
  if (typeof it != 'function') throw TypeError(it + ' is not a function!');
  return it;
};

var _aFunction$1 = /*#__PURE__*/Object.freeze({
	default: _aFunction,
	__moduleExports: _aFunction
});

var aFunction = ( _aFunction$1 && _aFunction ) || _aFunction$1;

// optional / simple context binding

var _ctx = function (fn, that, length) {
  aFunction(fn);
  if (that === undefined) return fn;
  switch (length) {
    case 1: return function (a) {
      return fn.call(that, a);
    };
    case 2: return function (a, b) {
      return fn.call(that, a, b);
    };
    case 3: return function (a, b, c) {
      return fn.call(that, a, b, c);
    };
  }
  return function (/* ...args */) {
    return fn.apply(that, arguments);
  };
};

var _ctx$1 = /*#__PURE__*/Object.freeze({
	default: _ctx,
	__moduleExports: _ctx
});

var redefine = ( _redefine$1 && _redefine ) || _redefine$1;

var require$$0$1 = ( _ctx$1 && _ctx ) || _ctx$1;

var PROTOTYPE = 'prototype';

var $export = function (type, name, source) {
  var IS_FORCED = type & $export.F;
  var IS_GLOBAL = type & $export.G;
  var IS_STATIC = type & $export.S;
  var IS_PROTO = type & $export.P;
  var IS_BIND = type & $export.B;
  var target = IS_GLOBAL ? global$1 : IS_STATIC ? global$1[name] || (global$1[name] = {}) : (global$1[name] || {})[PROTOTYPE];
  var exports = IS_GLOBAL ? require$$1$1 : require$$1$1[name] || (require$$1$1[name] = {});
  var expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {});
  var key, own, out, exp;
  if (IS_GLOBAL) source = name;
  for (key in source) {
    // contains in native
    own = !IS_FORCED && target && target[key] !== undefined;
    // export native or passed
    out = (own ? target : source)[key];
    // bind timers to global for call from export context
    exp = IS_BIND && own ? require$$0$1(out, global$1) : IS_PROTO && typeof out == 'function' ? require$$0$1(Function.call, out) : out;
    // extend global
    if (target) redefine(target, key, out, type & $export.U);
    // export
    if (exports[key] != out) require$$0(exports, key, exp);
    if (IS_PROTO && expProto[key] != out) expProto[key] = out;
  }
};
global$1.core = require$$1$1;
// type bitmap
$export.F = 1;   // forced
$export.G = 2;   // global
$export.S = 4;   // static
$export.P = 8;   // proto
$export.B = 16;  // bind
$export.W = 32;  // wrap
$export.U = 64;  // safe
$export.R = 128; // real proto method for `library`
var _export = $export;

var _export$1 = /*#__PURE__*/Object.freeze({
	default: _export,
	__moduleExports: _export
});

// 7.2.1 RequireObjectCoercible(argument)
var _defined = function (it) {
  if (it == undefined) throw TypeError("Can't call method on  " + it);
  return it;
};

var _defined$1 = /*#__PURE__*/Object.freeze({
	default: _defined,
	__moduleExports: _defined
});

var defined = ( _defined$1 && _defined ) || _defined$1;

// 7.1.13 ToObject(argument)

var _toObject = function (it) {
  return Object(defined(it));
};

var _toObject$1 = /*#__PURE__*/Object.freeze({
	default: _toObject,
	__moduleExports: _toObject
});

var $export$1 = ( _export$1 && _export ) || _export$1;

var toObject = ( _toObject$1 && _toObject ) || _toObject$1;

$export$1($export$1.P + $export$1.F * require$$1(function () {
  return new Date(NaN).toJSON() !== null
    || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1;
}), 'Date', {
  // eslint-disable-next-line no-unused-vars
  toJSON: function toJSON(key) {
    var O = toObject(this);
    var pv = toPrimitive(O);
    return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();
  }
});

var toString = {}.toString;

var _cof = function (it) {
  return toString.call(it).slice(8, -1);
};

var _cof$1 = /*#__PURE__*/Object.freeze({
	default: _cof,
	__moduleExports: _cof
});

var cof = ( _cof$1 && _cof ) || _cof$1;

// fallback for non-array-like ES3 and non-enumerable old V8 strings

// eslint-disable-next-line no-prototype-builtins
var _iobject = Object('z').propertyIsEnumerable(0) ? Object : function (it) {
  return cof(it) == 'String' ? it.split('') : Object(it);
};

var _iobject$1 = /*#__PURE__*/Object.freeze({
	default: _iobject,
	__moduleExports: _iobject
});

var IObject = ( _iobject$1 && _iobject ) || _iobject$1;

// to indexed object, toObject with fallback for non-array-like ES3 strings


var _toIobject = function (it) {
  return IObject(defined(it));
};

var _toIobject$1 = /*#__PURE__*/Object.freeze({
	default: _toIobject,
	__moduleExports: _toIobject
});

// 7.1.4 ToInteger
var ceil = Math.ceil;
var floor = Math.floor;
var _toInteger = function (it) {
  return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
};

var _toInteger$1 = /*#__PURE__*/Object.freeze({
	default: _toInteger,
	__moduleExports: _toInteger
});

var toInteger = ( _toInteger$1 && _toInteger ) || _toInteger$1;

// 7.1.15 ToLength

var min = Math.min;
var _toLength = function (it) {
  return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
};

var _toLength$1 = /*#__PURE__*/Object.freeze({
	default: _toLength,
	__moduleExports: _toLength
});

var max = Math.max;
var min$1 = Math.min;
var _toAbsoluteIndex = function (index, length) {
  index = toInteger(index);
  return index < 0 ? max(index + length, 0) : min$1(index, length);
};

var _toAbsoluteIndex$1 = /*#__PURE__*/Object.freeze({
	default: _toAbsoluteIndex,
	__moduleExports: _toAbsoluteIndex
});

var toIObject = ( _toIobject$1 && _toIobject ) || _toIobject$1;

var toLength = ( _toLength$1 && _toLength ) || _toLength$1;

var toAbsoluteIndex = ( _toAbsoluteIndex$1 && _toAbsoluteIndex ) || _toAbsoluteIndex$1;

// false -> Array#indexOf
// true  -> Array#includes



var _arrayIncludes = function (IS_INCLUDES) {
  return function ($this, el, fromIndex) {
    var O = toIObject($this);
    var length = toLength(O.length);
    var index = toAbsoluteIndex(fromIndex, length);
    var value;
    // Array#includes uses SameValueZero equality algorithm
    // eslint-disable-next-line no-self-compare
    if (IS_INCLUDES && el != el) while (length > index) {
      value = O[index++];
      // eslint-disable-next-line no-self-compare
      if (value != value) return true;
    // Array#indexOf ignores holes, Array#includes - not
    } else for (;length > index; index++) if (IS_INCLUDES || index in O) {
      if (O[index] === el) return IS_INCLUDES || index || 0;
    } return !IS_INCLUDES && -1;
  };
};

var _arrayIncludes$1 = /*#__PURE__*/Object.freeze({
	default: _arrayIncludes,
	__moduleExports: _arrayIncludes
});

var _library = false;

var _library$1 = /*#__PURE__*/Object.freeze({
	default: _library,
	__moduleExports: _library
});

var LIBRARY = ( _library$1 && _library ) || _library$1;

var _shared = createCommonjsModule(function (module) {
var SHARED = '__core-js_shared__';
var store = global$1[SHARED] || (global$1[SHARED] = {});

(module.exports = function (key, value) {
  return store[key] || (store[key] = value !== undefined ? value : {});
})('versions', []).push({
  version: require$$1$1.version,
  mode: LIBRARY ? 'pure' : 'global',
  copyright: '© 2018 Denis Pushkarev (zloirock.ru)'
});
});

var _shared$1 = /*#__PURE__*/Object.freeze({
	default: _shared,
	__moduleExports: _shared
});

var require$$0$2 = ( _shared$1 && _shared ) || _shared$1;

var shared = require$$0$2('keys');

var _sharedKey = function (key) {
  return shared[key] || (shared[key] = uid(key));
};

var _sharedKey$1 = /*#__PURE__*/Object.freeze({
	default: _sharedKey,
	__moduleExports: _sharedKey
});

var require$$0$3 = ( _arrayIncludes$1 && _arrayIncludes ) || _arrayIncludes$1;

var require$$0$4 = ( _sharedKey$1 && _sharedKey ) || _sharedKey$1;

var arrayIndexOf = require$$0$3(false);
var IE_PROTO = require$$0$4('IE_PROTO');

var _objectKeysInternal = function (object, names) {
  var O = toIObject(object);
  var i = 0;
  var result = [];
  var key;
  for (key in O) if (key != IE_PROTO) has(O, key) && result.push(key);
  // Don't enum bug & hidden keys
  while (names.length > i) if (has(O, key = names[i++])) {
    ~arrayIndexOf(result, key) || result.push(key);
  }
  return result;
};

var _objectKeysInternal$1 = /*#__PURE__*/Object.freeze({
	default: _objectKeysInternal,
	__moduleExports: _objectKeysInternal
});

// IE 8- don't enum bug keys
var _enumBugKeys = (
  'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
).split(',');

var _enumBugKeys$1 = /*#__PURE__*/Object.freeze({
	default: _enumBugKeys,
	__moduleExports: _enumBugKeys
});

var $keys = ( _objectKeysInternal$1 && _objectKeysInternal ) || _objectKeysInternal$1;

var require$$0$5 = ( _enumBugKeys$1 && _enumBugKeys ) || _enumBugKeys$1;

// 19.1.2.14 / 15.2.3.14 Object.keys(O)



var _objectKeys = Object.keys || function keys(O) {
  return $keys(O, require$$0$5);
};

var _objectKeys$1 = /*#__PURE__*/Object.freeze({
	default: _objectKeys,
	__moduleExports: _objectKeys
});

var f$1 = Object.getOwnPropertySymbols;

var _objectGops = {
	f: f$1
};

var _objectGops$1 = /*#__PURE__*/Object.freeze({
	default: _objectGops,
	__moduleExports: _objectGops,
	f: f$1
});

var f$2 = {}.propertyIsEnumerable;

var _objectPie = {
	f: f$2
};

var _objectPie$1 = /*#__PURE__*/Object.freeze({
	default: _objectPie,
	__moduleExports: _objectPie,
	f: f$2
});

var getKeys = ( _objectKeys$1 && _objectKeys ) || _objectKeys$1;

var gOPS = ( _objectGops$1 && _objectGops ) || _objectGops$1;

var pIE = ( _objectPie$1 && _objectPie ) || _objectPie$1;

// 19.1.2.1 Object.assign(target, source, ...)





var $assign = Object.assign;

// should work with symbols and should have deterministic property order (V8 bug)
var _objectAssign = !$assign || require$$1(function () {
  var A = {};
  var B = {};
  // eslint-disable-next-line no-undef
  var S = Symbol();
  var K = 'abcdefghijklmnopqrst';
  A[S] = 7;
  K.split('').forEach(function (k) { B[k] = k; });
  return $assign({}, A)[S] != 7 || Object.keys($assign({}, B)).join('') != K;
}) ? function assign(target, source) { // eslint-disable-line no-unused-vars
  var T = toObject(target);
  var aLen = arguments.length;
  var index = 1;
  var getSymbols = gOPS.f;
  var isEnum = pIE.f;
  while (aLen > index) {
    var S = IObject(arguments[index++]);
    var keys = getSymbols ? getKeys(S).concat(getSymbols(S)) : getKeys(S);
    var length = keys.length;
    var j = 0;
    var key;
    while (length > j) if (isEnum.call(S, key = keys[j++])) T[key] = S[key];
  } return T;
} : $assign;

var _objectAssign$1 = /*#__PURE__*/Object.freeze({
	default: _objectAssign,
	__moduleExports: _objectAssign
});

var require$$0$6 = ( _objectAssign$1 && _objectAssign ) || _objectAssign$1;

// 19.1.3.1 Object.assign(target, source)


$export$1($export$1.S + $export$1.F, 'Object', { assign: require$$0$6 });

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
  try {
    var info = gen[key](arg);
    var value = info.value;
  } catch (error) {
    reject(error);
    return;
  }

  if (info.done) {
    resolve(value);
  } else {
    Promise.resolve(value).then(_next, _throw);
  }
}

function _asyncToGenerator(fn) {
  return function () {
    var self = this,
        args = arguments;
    return new Promise(function (resolve, reject) {
      var gen = fn.apply(self, args);

      function _next(value) {
        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
      }

      function _throw(err) {
        asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
      }

      _next(undefined);
    });
  };
}

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

function _createClass(Constructor, protoProps, staticProps) {
  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
  if (staticProps) _defineProperties(Constructor, staticProps);
  return Constructor;
}

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 _inherits(subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function");
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      writable: true,
      configurable: true
    }
  });
  if (superClass) _setPrototypeOf(subClass, superClass);
}

function _getPrototypeOf(o) {
  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
    return o.__proto__ || Object.getPrototypeOf(o);
  };
  return _getPrototypeOf(o);
}

function _setPrototypeOf(o, p) {
  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
    o.__proto__ = p;
    return o;
  };

  return _setPrototypeOf(o, p);
}

function isNativeReflectConstruct() {
  if (typeof Reflect === "undefined" || !Reflect.construct) return false;
  if (Reflect.construct.sham) return false;
  if (typeof Proxy === "function") return true;

  try {
    Date.prototype.toString.call(Reflect.construct(Date, [], function () {}));
    return true;
  } catch (e) {
    return false;
  }
}

function _construct(Parent, args, Class) {
  if (isNativeReflectConstruct()) {
    _construct = Reflect.construct;
  } else {
    _construct = function _construct(Parent, args, Class) {
      var a = [null];
      a.push.apply(a, args);
      var Constructor = Function.bind.apply(Parent, a);
      var instance = new Constructor();
      if (Class) _setPrototypeOf(instance, Class.prototype);
      return instance;
    };
  }

  return _construct.apply(null, arguments);
}

function _isNativeFunction(fn) {
  return Function.toString.call(fn).indexOf("[native code]") !== -1;
}

function _wrapNativeSuper(Class) {
  var _cache = typeof Map === "function" ? new Map() : undefined;

  _wrapNativeSuper = function _wrapNativeSuper(Class) {
    if (Class === null || !_isNativeFunction(Class)) return Class;

    if (typeof Class !== "function") {
      throw new TypeError("Super expression must either be null or a function");
    }

    if (typeof _cache !== "undefined") {
      if (_cache.has(Class)) return _cache.get(Class);

      _cache.set(Class, Wrapper);
    }

    function Wrapper() {
      return _construct(Class, arguments, _getPrototypeOf(this).constructor);
    }

    Wrapper.prototype = Object.create(Class.prototype, {
      constructor: {
        value: Wrapper,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
    return _setPrototypeOf(Wrapper, Class);
  };

  return _wrapNativeSuper(Class);
}

function _assertThisInitialized(self) {
  if (self === void 0) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return self;
}

function _possibleConstructorReturn(self, call) {
  if (call && (typeof call === "object" || typeof call === "function")) {
    return call;
  }

  return _assertThisInitialized(self);
}

function _superPropBase(object, property) {
  while (!Object.prototype.hasOwnProperty.call(object, property)) {
    object = _getPrototypeOf(object);
    if (object === null) break;
  }

  return object;
}

function _get(target, property, receiver) {
  if (typeof Reflect !== "undefined" && Reflect.get) {
    _get = Reflect.get;
  } else {
    _get = function _get(target, property, receiver) {
      var base = _superPropBase(target, property);

      if (!base) return;
      var desc = Object.getOwnPropertyDescriptor(base, property);

      if (desc.get) {
        return desc.get.call(receiver);
      }

      return desc.value;
    };
  }

  return _get(target, property, receiver || target);
}

function _toConsumableArray(arr) {
  return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread();
}

function _arrayWithoutHoles(arr) {
  if (Array.isArray(arr)) {
    for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];

    return arr2;
  }
}

function _iterableToArray(iter) {
  if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
}

function _nonIterableSpread() {
  throw new TypeError("Invalid attempt to spread non-iterable instance");
}

var _wks = createCommonjsModule(function (module) {
var store = require$$0$2('wks');

var Symbol = global$1.Symbol;
var USE_SYMBOL = typeof Symbol == 'function';

var $exports = module.exports = function (name) {
  return store[name] || (store[name] =
    USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name));
};

$exports.store = store;
});

var _wks$1 = /*#__PURE__*/Object.freeze({
	default: _wks,
	__moduleExports: _wks
});

var require$$0$7 = ( _wks$1 && _wks ) || _wks$1;

var f$3 = require$$0$7;

var _wksExt = {
	f: f$3
};

var _wksExt$1 = /*#__PURE__*/Object.freeze({
	default: _wksExt,
	__moduleExports: _wksExt,
	f: f$3
});

var wksExt = ( _wksExt$1 && _wksExt ) || _wksExt$1;

var defineProperty = dP$1.f;
var _wksDefine = function (name) {
  var $Symbol = require$$1$1.Symbol || (require$$1$1.Symbol = LIBRARY ? {} : global$1.Symbol || {});
  if (name.charAt(0) != '_' && !(name in $Symbol)) defineProperty($Symbol, name, { value: wksExt.f(name) });
};

var _wksDefine$1 = /*#__PURE__*/Object.freeze({
	default: _wksDefine,
	__moduleExports: _wksDefine
});

var wksDefine = ( _wksDefine$1 && _wksDefine ) || _wksDefine$1;

wksDefine('asyncIterator');

var _meta = createCommonjsModule(function (module) {
var META = uid('meta');


var setDesc = dP$1.f;
var id = 0;
var isExtensible = Object.isExtensible || function () {
  return true;
};
var FREEZE = !require$$1(function () {
  return isExtensible(Object.preventExtensions({}));
});
var setMeta = function (it) {
  setDesc(it, META, { value: {
    i: 'O' + ++id, // object ID
    w: {}          // weak collections IDs
  } });
};
var fastKey = function (it, create) {
  // return primitive with prefix
  if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
  if (!has(it, META)) {
    // can't set metadata to uncaught frozen object
    if (!isExtensible(it)) return 'F';
    // not necessary to add metadata
    if (!create) return 'E';
    // add missing metadata
    setMeta(it);
  // return object ID
  } return it[META].i;
};
var getWeak = function (it, create) {
  if (!has(it, META)) {
    // can't set metadata to uncaught frozen object
    if (!isExtensible(it)) return true;
    // not necessary to add metadata
    if (!create) return false;
    // add missing metadata
    setMeta(it);
  // return hash weak collections IDs
  } return it[META].w;
};
// add metadata on freeze-family methods calling
var onFreeze = function (it) {
  if (FREEZE && meta.NEED && isExtensible(it) && !has(it, META)) setMeta(it);
  return it;
};
var meta = module.exports = {
  KEY: META,
  NEED: false,
  fastKey: fastKey,
  getWeak: getWeak,
  onFreeze: onFreeze
};
});
var _meta_1 = _meta.KEY;
var _meta_2 = _meta.NEED;
var _meta_3 = _meta.fastKey;
var _meta_4 = _meta.getWeak;
var _meta_5 = _meta.onFreeze;

var _meta$1 = /*#__PURE__*/Object.freeze({
	default: _meta,
	__moduleExports: _meta,
	KEY: _meta_1,
	NEED: _meta_2,
	fastKey: _meta_3,
	getWeak: _meta_4,
	onFreeze: _meta_5
});

var def = dP$1.f;

var TAG = require$$0$7('toStringTag');

var _setToStringTag = function (it, tag, stat) {
  if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag });
};

var _setToStringTag$1 = /*#__PURE__*/Object.freeze({
	default: _setToStringTag,
	__moduleExports: _setToStringTag
});

// all enumerable object keys, includes symbols



var _enumKeys = function (it) {
  var result = getKeys(it);
  var getSymbols = gOPS.f;
  if (getSymbols) {
    var symbols = getSymbols(it);
    var isEnum = pIE.f;
    var i = 0;
    var key;
    while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key);
  } return result;
};

var _enumKeys$1 = /*#__PURE__*/Object.freeze({
	default: _enumKeys,
	__moduleExports: _enumKeys
});

// 7.2.2 IsArray(argument)

var _isArray = Array.isArray || function isArray(arg) {
  return cof(arg) == 'Array';
};

var _isArray$1 = /*#__PURE__*/Object.freeze({
	default: _isArray,
	__moduleExports: _isArray
});

var _objectDps = DESCRIPTORS ? Object.defineProperties : function defineProperties(O, Properties) {
  anObject(O);
  var keys = getKeys(Properties);
  var length = keys.length;
  var i = 0;
  var P;
  while (length > i) dP$1.f(O, P = keys[i++], Properties[P]);
  return O;
};

var _objectDps$1 = /*#__PURE__*/Object.freeze({
	default: _objectDps,
	__moduleExports: _objectDps
});

var document$1 = global$1.document;
var _html = document$1 && document$1.documentElement;

var _html$1 = /*#__PURE__*/Object.freeze({
	default: _html,
	__moduleExports: _html
});

var dPs = ( _objectDps$1 && _objectDps ) || _objectDps$1;

var require$$2$1 = ( _html$1 && _html ) || _html$1;

// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])



var IE_PROTO$1 = require$$0$4('IE_PROTO');
var Empty = function () { /* empty */ };
var PROTOTYPE$1 = 'prototype';

// Create object with fake `null` prototype: use iframe Object with cleared prototype
var createDict = function () {
  // Thrash, waste and sodomy: IE GC bug
  var iframe = require$$2('iframe');
  var i = require$$0$5.length;
  var lt = '<';
  var gt = '>';
  var iframeDocument;
  iframe.style.display = 'none';
  require$$2$1.appendChild(iframe);
  iframe.src = 'javascript:'; // eslint-disable-line no-script-url
  // createDict = iframe.contentWindow.Object;
  // html.removeChild(iframe);
  iframeDocument = iframe.contentWindow.document;
  iframeDocument.open();
  iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt);
  iframeDocument.close();
  createDict = iframeDocument.F;
  while (i--) delete createDict[PROTOTYPE$1][require$$0$5[i]];
  return createDict();
};

var _objectCreate = Object.create || function create(O, Properties) {
  var result;
  if (O !== null) {
    Empty[PROTOTYPE$1] = anObject(O);
    result = new Empty();
    Empty[PROTOTYPE$1] = null;
    // add "__proto__" for Object.getPrototypeOf polyfill
    result[IE_PROTO$1] = O;
  } else result = createDict();
  return Properties === undefined ? result : dPs(result, Properties);
};

var _objectCreate$1 = /*#__PURE__*/Object.freeze({
	default: _objectCreate,
	__moduleExports: _objectCreate
});

// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)

var hiddenKeys = require$$0$5.concat('length', 'prototype');

var f$4 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
  return $keys(O, hiddenKeys);
};

var _objectGopn = {
	f: f$4
};

var _objectGopn$1 = /*#__PURE__*/Object.freeze({
	default: _objectGopn,
	__moduleExports: _objectGopn,
	f: f$4
});

var require$$0$8 = ( _objectGopn$1 && _objectGopn ) || _objectGopn$1;

// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window

var gOPN = require$$0$8.f;
var toString$1 = {}.toString;

var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
  ? Object.getOwnPropertyNames(window) : [];

var getWindowNames = function (it) {
  try {
    return gOPN(it);
  } catch (e) {
    return windowNames.slice();
  }
};

var f$5 = function getOwnPropertyNames(it) {
  return windowNames && toString$1.call(it) == '[object Window]' ? getWindowNames(it) : gOPN(toIObject(it));
};

var _objectGopnExt = {
	f: f$5
};

var _objectGopnExt$1 = /*#__PURE__*/Object.freeze({
	default: _objectGopnExt,
	__moduleExports: _objectGopnExt,
	f: f$5
});

var gOPD = Object.getOwnPropertyDescriptor;

var f$6 = DESCRIPTORS ? gOPD : function getOwnPropertyDescriptor(O, P) {
  O = toIObject(O);
  P = toPrimitive(P, true);
  if (IE8_DOM_DEFINE) try {
    return gOPD(O, P);
  } catch (e) { /* empty */ }
  if (has(O, P)) return descriptor(!pIE.f.call(O, P), O[P]);
};

var _objectGopd = {
	f: f$6
};

var _objectGopd$1 = /*#__PURE__*/Object.freeze({
	default: _objectGopd,
	__moduleExports: _objectGopd,
	f: f$6
});

var meta = ( _meta$1 && _meta ) || _meta$1;

var setToStringTag = ( _setToStringTag$1 && _setToStringTag ) || _setToStringTag$1;

var enumKeys = ( _enumKeys$1 && _enumKeys ) || _enumKeys$1;

var isArray = ( _isArray$1 && _isArray ) || _isArray$1;

var create = ( _objectCreate$1 && _objectCreate ) || _objectCreate$1;

var gOPNExt = ( _objectGopnExt$1 && _objectGopnExt ) || _objectGopnExt$1;

var require$$1$2 = ( _objectGopd$1 && _objectGopd ) || _objectGopd$1;

// ECMAScript 6 symbols shim





var META = meta.KEY;



















var gOPD$1 = require$$1$2.f;
var dP$2 = dP$1.f;
var gOPN$1 = gOPNExt.f;
var $Symbol = global$1.Symbol;
var $JSON = global$1.JSON;
var _stringify = $JSON && $JSON.stringify;
var PROTOTYPE$2 = 'prototype';
var HIDDEN = require$$0$7('_hidden');
var TO_PRIMITIVE = require$$0$7('toPrimitive');
var isEnum = {}.propertyIsEnumerable;
var SymbolRegistry = require$$0$2('symbol-registry');
var AllSymbols = require$$0$2('symbols');
var OPSymbols = require$$0$2('op-symbols');
var ObjectProto = Object[PROTOTYPE$2];
var USE_NATIVE = typeof $Symbol == 'function';
var QObject = global$1.QObject;
// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
var setter = !QObject || !QObject[PROTOTYPE$2] || !QObject[PROTOTYPE$2].findChild;

// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
var setSymbolDesc = DESCRIPTORS && require$$1(function () {
  return create(dP$2({}, 'a', {
    get: function () { return dP$2(this, 'a', { value: 7 }).a; }
  })).a != 7;
}) ? function (it, key, D) {
  var protoDesc = gOPD$1(ObjectProto, key);
  if (protoDesc) delete ObjectProto[key];
  dP$2(it, key, D);
  if (protoDesc && it !== ObjectProto) dP$2(ObjectProto, key, protoDesc);
} : dP$2;

var wrap = function (tag) {
  var sym = AllSymbols[tag] = create($Symbol[PROTOTYPE$2]);
  sym._k = tag;
  return sym;
};

var isSymbol = USE_NATIVE && typeof $Symbol.iterator == 'symbol' ? function (it) {
  return typeof it == 'symbol';
} : function (it) {
  return it instanceof $Symbol;
};

var $defineProperty = function defineProperty(it, key, D) {
  if (it === ObjectProto) $defineProperty(OPSymbols, key, D);
  anObject(it);
  key = toPrimitive(key, true);
  anObject(D);
  if (has(AllSymbols, key)) {
    if (!D.enumerable) {
      if (!has(it, HIDDEN)) dP$2(it, HIDDEN, descriptor(1, {}));
      it[HIDDEN][key] = true;
    } else {
      if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false;
      D = create(D, { enumerable: descriptor(0, false) });
    } return setSymbolDesc(it, key, D);
  } return dP$2(it, key, D);
};
var $defineProperties = function defineProperties(it, P) {
  anObject(it);
  var keys = enumKeys(P = toIObject(P));
  var i = 0;
  var l = keys.length;
  var key;
  while (l > i) $defineProperty(it, key = keys[i++], P[key]);
  return it;
};
var $create = function create$$1(it, P) {
  return P === undefined ? create(it) : $defineProperties(create(it), P);
};
var $propertyIsEnumerable = function propertyIsEnumerable(key) {
  var E = isEnum.call(this, key = toPrimitive(key, true));
  if (this === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return false;
  return E || !has(this, key) || !has(AllSymbols, key) || has(this, HIDDEN) && this[HIDDEN][key] ? E : true;
};
var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(it, key) {
  it = toIObject(it);
  key = toPrimitive(key, true);
  if (it === ObjectProto && has(AllSymbols, key) && !has(OPSymbols, key)) return;
  var D = gOPD$1(it, key);
  if (D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) D.enumerable = true;
  return D;
};
var $getOwnPropertyNames = function getOwnPropertyNames(it) {
  var names = gOPN$1(toIObject(it));
  var result = [];
  var i = 0;
  var key;
  while (names.length > i) {
    if (!has(AllSymbols, key = names[i++]) && key != HIDDEN && key != META) result.push(key);
  } return result;
};
var $getOwnPropertySymbols = function getOwnPropertySymbols(it) {
  var IS_OP = it === ObjectProto;
  var names = gOPN$1(IS_OP ? OPSymbols : toIObject(it));
  var result = [];
  var i = 0;
  var key;
  while (names.length > i) {
    if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectProto, key) : true)) result.push(AllSymbols[key]);
  } return result;
};

// 19.4.1.1 Symbol([description])
if (!USE_NATIVE) {
  $Symbol = function Symbol() {
    if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor!');
    var tag = uid(arguments.length > 0 ? arguments[0] : undefined);
    var $set = function (value) {
      if (this === ObjectProto) $set.call(OPSymbols, value);
      if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
      setSymbolDesc(this, tag, descriptor(1, value));
    };
    if (DESCRIPTORS && setter) setSymbolDesc(ObjectProto, tag, { configurable: true, set: $set });
    return wrap(tag);
  };
  redefine($Symbol[PROTOTYPE$2], 'toString', function toString() {
    return this._k;
  });

  require$$1$2.f = $getOwnPropertyDescriptor;
  dP$1.f = $defineProperty;
  require$$0$8.f = gOPNExt.f = $getOwnPropertyNames;
  pIE.f = $propertyIsEnumerable;
  gOPS.f = $getOwnPropertySymbols;

  if (DESCRIPTORS && !LIBRARY) {
    redefine(ObjectProto, 'propertyIsEnumerable', $propertyIsEnumerable, true);
  }

  wksExt.f = function (name) {
    return wrap(require$$0$7(name));
  };
}

$export$1($export$1.G + $export$1.W + $export$1.F * !USE_NATIVE, { Symbol: $Symbol });

for (var es6Symbols = (
  // 19.4.2.2, 19.4.2.3, 19.4.2.4, 19.4.2.6, 19.4.2.8, 19.4.2.9, 19.4.2.10, 19.4.2.11, 19.4.2.12, 19.4.2.13, 19.4.2.14
  'hasInstance,isConcatSpreadable,iterator,match,replace,search,species,split,toPrimitive,toStringTag,unscopables'
).split(','), j = 0; es6Symbols.length > j;)require$$0$7(es6Symbols[j++]);

for (var wellKnownSymbols = getKeys(require$$0$7.store), k = 0; wellKnownSymbols.length > k;) wksDefine(wellKnownSymbols[k++]);

$export$1($export$1.S + $export$1.F * !USE_NATIVE, 'Symbol', {
  // 19.4.2.1 Symbol.for(key)
  'for': function (key) {
    return has(SymbolRegistry, key += '')
      ? SymbolRegistry[key]
      : SymbolRegistry[key] = $Symbol(key);
  },
  // 19.4.2.5 Symbol.keyFor(sym)
  keyFor: function keyFor(sym) {
    if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol!');
    for (var key in SymbolRegistry) if (SymbolRegistry[key] === sym) return key;
  },
  useSetter: function () { setter = true; },
  useSimple: function () { setter = false; }
});

$export$1($export$1.S + $export$1.F * !USE_NATIVE, 'Object', {
  // 19.1.2.2 Object.create(O [, Properties])
  create: $create,
  // 19.1.2.4 Object.defineProperty(O, P, Attributes)
  defineProperty: $defineProperty,
  // 19.1.2.3 Object.defineProperties(O, Properties)
  defineProperties: $defineProperties,
  // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)
  getOwnPropertyDescriptor: $getOwnPropertyDescriptor,
  // 19.1.2.7 Object.getOwnPropertyNames(O)
  getOwnPropertyNames: $getOwnPropertyNames,
  // 19.1.2.8 Object.getOwnPropertySymbols(O)
  getOwnPropertySymbols: $getOwnPropertySymbols
});

// 24.3.2 JSON.stringify(value [, replacer [, space]])
$JSON && $export$1($export$1.S + $export$1.F * (!USE_NATIVE || require$$1(function () {
  var S = $Symbol();
  // MS Edge converts symbol values to JSON as {}
  // WebKit converts symbol values to JSON as null
  // V8 throws on boxed symbols
  return _stringify([S]) != '[null]' || _stringify({ a: S }) != '{}' || _stringify(Object(S)) != '{}';
})), 'JSON', {
  stringify: function stringify(it) {
    var args = [it];
    var i = 1;
    var replacer, $replacer;
    while (arguments.length > i) args.push(arguments[i++]);
    $replacer = replacer = args[1];
    if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined
    if (!isArray(replacer)) replacer = function (key, value) {
      if (typeof $replacer == 'function') value = $replacer.call(this, key, value);
      if (!isSymbol(value)) return value;
    };
    args[1] = replacer;
    return _stringify.apply($JSON, args);
  }
});

// 19.4.3.4 Symbol.prototype[@@toPrimitive](hint)
$Symbol[PROTOTYPE$2][TO_PRIMITIVE] || require$$0($Symbol[PROTOTYPE$2], TO_PRIMITIVE, $Symbol[PROTOTYPE$2].valueOf);
// 19.4.3.5 Symbol.prototype[@@toStringTag]
setToStringTag($Symbol, 'Symbol');
// 20.2.1.9 Math[@@toStringTag]
setToStringTag(Math, 'Math', true);
// 24.3.3 JSON[@@toStringTag]
setToStringTag(global$1.JSON, 'JSON', true);

// 22.1.3.31 Array.prototype[@@unscopables]
var UNSCOPABLES = require$$0$7('unscopables');
var ArrayProto = Array.prototype;
if (ArrayProto[UNSCOPABLES] == undefined) require$$0(ArrayProto, UNSCOPABLES, {});
var _addToUnscopables = function (key) {
  ArrayProto[UNSCOPABLES][key] = true;
};

var _addToUnscopables$1 = /*#__PURE__*/Object.freeze({
	default: _addToUnscopables,
	__moduleExports: _addToUnscopables
});

var _iterStep = function (done, value) {
  return { value: value, done: !!done };
};

var _iterStep$1 = /*#__PURE__*/Object.freeze({
	default: _iterStep,
	__moduleExports: _iterStep
});

var _iterators = {};

var _iterators$1 = /*#__PURE__*/Object.freeze({
	default: _iterators,
	__moduleExports: _iterators
});

var IteratorPrototype = {};

// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
require$$0(IteratorPrototype, require$$0$7('iterator'), function () { return this; });

var _iterCreate = function (Constructor, NAME, next) {
  Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) });
  setToStringTag(Constructor, NAME + ' Iterator');
};

var _iterCreate$1 = /*#__PURE__*/Object.freeze({
	default: _iterCreate,
	__moduleExports: _iterCreate
});

// 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)


var IE_PROTO$2 = require$$0$4('IE_PROTO');
var ObjectProto$1 = Object.prototype;

var _objectGpo = Object.getPrototypeOf || function (O) {
  O = toObject(O);
  if (has(O, IE_PROTO$2)) return O[IE_PROTO$2];
  if (typeof O.constructor == 'function' && O instanceof O.constructor) {
    return O.constructor.prototype;
  } return O instanceof Object ? ObjectProto$1 : null;
};

var _objectGpo$1 = /*#__PURE__*/Object.freeze({
	default: _objectGpo,
	__moduleExports: _objectGpo
});

var Iterators = ( _iterators$1 && _iterators ) || _iterators$1;

var $iterCreate = ( _iterCreate$1 && _iterCreate ) || _iterCreate$1;

var getPrototypeOf = ( _objectGpo$1 && _objectGpo ) || _objectGpo$1;

var ITERATOR = require$$0$7('iterator');
var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`
var FF_ITERATOR = '@@iterator';
var KEYS = 'keys';
var VALUES = 'values';

var returnThis = function () { return this; };

var _iterDefine = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {
  $iterCreate(Constructor, NAME, next);
  var getMethod = function (kind) {
    if (!BUGGY && kind in proto) return proto[kind];
    switch (kind) {
      case KEYS: return function keys() { return new Constructor(this, kind); };
      case VALUES: return function values() { return new Constructor(this, kind); };
    } return function entries() { return new Constructor(this, kind); };
  };
  var TAG = NAME + ' Iterator';
  var DEF_VALUES = DEFAULT == VALUES;
  var VALUES_BUG = false;
  var proto = Base.prototype;
  var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];
  var $default = $native || getMethod(DEFAULT);
  var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;
  var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;
  var methods, key, IteratorPrototype;
  // Fix native
  if ($anyNative) {
    IteratorPrototype = getPrototypeOf($anyNative.call(new Base()));
    if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {
      // Set @@toStringTag to native iterators
      setToStringTag(IteratorPrototype, TAG, true);
      // fix for some old engines
      if (!LIBRARY && typeof IteratorPrototype[ITERATOR] != 'function') require$$0(IteratorPrototype, ITERATOR, returnThis);
    }
  }
  // fix Array#{values, @@iterator}.name in V8 / FF
  if (DEF_VALUES && $native && $native.name !== VALUES) {
    VALUES_BUG = true;
    $default = function values() { return $native.call(this); };
  }
  // Define iterator
  if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) {
    require$$0(proto, ITERATOR, $default);
  }
  // Plug for library
  Iterators[NAME] = $default;
  Iterators[TAG] = returnThis;
  if (DEFAULT) {
    methods = {
      values: DEF_VALUES ? $default : getMethod(VALUES),
      keys: IS_SET ? $default : getMethod(KEYS),
      entries: $entries
    };
    if (FORCED) for (key in methods) {
      if (!(key in proto)) redefine(proto, key, methods[key]);
    } else $export$1($export$1.P + $export$1.F * (BUGGY || VALUES_BUG), NAME, methods);
  }
  return methods;
};

var _iterDefine$1 = /*#__PURE__*/Object.freeze({
	default: _iterDefine,
	__moduleExports: _iterDefine
});

var require$$1$3 = ( _addToUnscopables$1 && _addToUnscopables ) || _addToUnscopables$1;

var step = ( _iterStep$1 && _iterStep ) || _iterStep$1;

var $iterDefine = ( _iterDefine$1 && _iterDefine ) || _iterDefine$1;

// 22.1.3.4 Array.prototype.entries()
// 22.1.3.13 Array.prototype.keys()
// 22.1.3.29 Array.prototype.values()
// 22.1.3.30 Array.prototype[@@iterator]()
var es6_array_iterator = $iterDefine(Array, 'Array', function (iterated, kind) {
  this._t = toIObject(iterated); // target
  this._i = 0;                   // next index
  this._k = kind;                // kind
// 22.1.5.2.1 %ArrayIteratorPrototype%.next()
}, function () {
  var O = this._t;
  var kind = this._k;
  var index = this._i++;
  if (!O || index >= O.length) {
    this._t = undefined;
    return step(1);
  }
  if (kind == 'keys') return step(0, index);
  if (kind == 'values') return step(0, O[index]);
  return step(0, [index, O[index]]);
}, 'values');

// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)
Iterators.Arguments = Iterators.Array;

require$$1$3('keys');
require$$1$3('values');
require$$1$3('entries');

var es6_array_iterator$1 = /*#__PURE__*/Object.freeze({
	default: es6_array_iterator,
	__moduleExports: es6_array_iterator
});

var $iterators = ( es6_array_iterator$1 && es6_array_iterator ) || es6_array_iterator$1;

var ITERATOR$1 = require$$0$7('iterator');
var TO_STRING_TAG = require$$0$7('toStringTag');
var ArrayValues = Iterators.Array;

var DOMIterables = {
  CSSRuleList: true, // TODO: Not spec compliant, should be false.
  CSSStyleDeclaration: false,
  CSSValueList: false,
  ClientRectList: false,
  DOMRectList: false,
  DOMStringList: false,
  DOMTokenList: true,
  DataTransferItemList: false,
  FileList: false,
  HTMLAllCollection: false,
  HTMLCollection: false,
  HTMLFormElement: false,
  HTMLSelectElement: false,
  MediaList: true, // TODO: Not spec compliant, should be false.
  MimeTypeArray: false,
  NamedNodeMap: false,
  NodeList: true,
  PaintRequestList: false,
  Plugin: false,
  PluginArray: false,
  SVGLengthList: false,
  SVGNumberList: false,
  SVGPathSegList: false,
  SVGPointList: false,
  SVGStringList: false,
  SVGTransformList: false,
  SourceBufferList: false,
  StyleSheetList: true, // TODO: Not spec compliant, should be false.
  TextTrackCueList: false,
  TextTrackList: false,
  TouchList: false
};

for (var collections = getKeys(DOMIterables), i = 0; i < collections.length; i++) {
  var NAME = collections[i];
  var explicit = DOMIterables[NAME];
  var Collection = global$1[NAME];
  var proto = Collection && Collection.prototype;
  var key;
  if (proto) {
    if (!proto[ITERATOR$1]) require$$0(proto, ITERATOR$1, ArrayValues);
    if (!proto[TO_STRING_TAG]) require$$0(proto, TO_STRING_TAG, NAME);
    Iterators[NAME] = ArrayValues;
    if (explicit) for (key in $iterators) if (!proto[key]) redefine(proto, key, $iterators[key], true);
  }
}

// 22.1.2.2 / 15.4.3.2 Array.isArray(arg)


$export$1($export$1.S, 'Array', { isArray: isArray });

var SPECIES = require$$0$7('species');

var _arraySpeciesConstructor = function (original) {
  var C;
  if (isArray(original)) {
    C = original.constructor;
    // cross-realm fallback
    if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;
    if (isObject(C)) {
      C = C[SPECIES];
      if (C === null) C = undefined;
    }
  } return C === undefined ? Array : C;
};

var _arraySpeciesConstructor$1 = /*#__PURE__*/Object.freeze({
	default: _arraySpeciesConstructor,
	__moduleExports: _arraySpeciesConstructor
});

var speciesConstructor = ( _arraySpeciesConstructor$1 && _arraySpeciesConstructor ) || _arraySpeciesConstructor$1;

// 9.4.2.3 ArraySpeciesCreate(originalArray, length)


var _arraySpeciesCreate = function (original, length) {
  return new (speciesConstructor(original))(length);
};

var _arraySpeciesCreate$1 = /*#__PURE__*/Object.freeze({
	default: _arraySpeciesCreate,
	__moduleExports: _arraySpeciesCreate
});

var asc = ( _arraySpeciesCreate$1 && _arraySpeciesCreate ) || _arraySpeciesCreate$1;

// 0 -> Array#forEach
// 1 -> Array#map
// 2 -> Array#filter
// 3 -> Array#some
// 4 -> Array#every
// 5 -> Array#find
// 6 -> Array#findIndex





var _arrayMethods = function (TYPE, $create) {
  var IS_MAP = TYPE == 1;
  var IS_FILTER = TYPE == 2;
  var IS_SOME = TYPE == 3;
  var IS_EVERY = TYPE == 4;
  var IS_FIND_INDEX = TYPE == 6;
  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
  var create = $create || asc;
  return function ($this, callbackfn, that) {
    var O = toObject($this);
    var self = IObject(O);
    var f = require$$0$1(callbackfn, that, 3);
    var length = toLength(self.length);
    var index = 0;
    var result = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
    var val, res;
    for (;length > index; index++) if (NO_HOLES || index in self) {
      val = self[index];
      res = f(val, index, O);
      if (TYPE) {
        if (IS_MAP) result[index] = res;   // map
        else if (res) switch (TYPE) {
          case 3: return true;             // some
          case 5: return val;              // find
          case 6: return index;            // findIndex
          case 2: result.push(val);        // filter
        } else if (IS_EVERY) return false; // every
      }
    }
    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result;
  };
};

var _arrayMethods$1 = /*#__PURE__*/Object.freeze({
	default: _arrayMethods,
	__moduleExports: _arrayMethods
});

var _strictMethod = function (method, arg) {
  return !!method && require$$1(function () {
    // eslint-disable-next-line no-useless-call
    arg ? method.call(null, function () { /* empty */ }, 1) : method.call(null);
  });
};

var _strictMethod$1 = /*#__PURE__*/Object.freeze({
	default: _strictMethod,
	__moduleExports: _strictMethod
});

var require$$0$9 = ( _arrayMethods$1 && _arrayMethods ) || _arrayMethods$1;

var require$$1$4 = ( _strictMethod$1 && _strictMethod ) || _strictMethod$1;

var $forEach = require$$0$9(0);
var STRICT = require$$1$4([].forEach, true);

$export$1($export$1.P + $export$1.F * !STRICT, 'Array', {
  // 22.1.3.10 / 15.4.4.18 Array.prototype.forEach(callbackfn [, thisArg])
  forEach: function forEach(callbackfn /* , thisArg */) {
    return $forEach(this, callbackfn, arguments[1]);
  }
});

var runtime = createCommonjsModule(function (module) {
/**
 * Copyright (c) 2014-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

!(function(global) {

  var Op = Object.prototype;
  var hasOwn = Op.hasOwnProperty;
  var undefined; // More compressible than void 0.
  var $Symbol = typeof Symbol === "function" ? Symbol : {};
  var iteratorSymbol = $Symbol.iterator || "@@iterator";
  var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
  var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
  var runtime = global.regeneratorRuntime;
  if (runtime) {
    {
      // If regeneratorRuntime is defined globally and we're in a module,
      // make the exports object identical to regeneratorRuntime.
      module.exports = runtime;
    }
    // Don't bother evaluating the rest of this file if the runtime was
    // already defined globally.
    return;
  }

  // Define the runtime globally (as expected by generated code) as either
  // module.exports (if we're in a module) or a new, empty object.
  runtime = global.regeneratorRuntime = module.exports;

  function wrap(innerFn, outerFn, self, tryLocsList) {
    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
    var generator = Object.create(protoGenerator.prototype);
    var context = new Context(tryLocsList || []);

    // The ._invoke method unifies the implementations of the .next,
    // .throw, and .return methods.
    generator._invoke = makeInvokeMethod(innerFn, self, context);

    return generator;
  }
  runtime.wrap = wrap;

  // Try/catch helper to minimize deoptimizations. Returns a completion
  // record like context.tryEntries[i].completion. This interface could
  // have been (and was previously) designed to take a closure to be
  // invoked without arguments, but in all the cases we care about we
  // already have an existing method we want to call, so there's no need
  // to create a new function object. We can even get away with assuming
  // the method takes exactly one argument, since that happens to be true
  // in every case, so we don't have to touch the arguments object. The
  // only additional allocation required is the completion record, which
  // has a stable shape and so hopefully should be cheap to allocate.
  function tryCatch(fn, obj, arg) {
    try {
      return { type: "normal", arg: fn.call(obj, arg) };
    } catch (err) {
      return { type: "throw", arg: err };
    }
  }

  var GenStateSuspendedStart = "suspendedStart";
  var GenStateSuspendedYield = "suspendedYield";
  var GenStateExecuting = "executing";
  var GenStateCompleted = "completed";

  // Returning this object from the innerFn has the same effect as
  // breaking out of the dispatch switch statement.
  var ContinueSentinel = {};

  // Dummy constructor functions that we use as the .constructor and
  // .constructor.prototype properties for functions that return Generator
  // objects. For full spec compliance, you may wish to configure your
  // minifier not to mangle the names of these two functions.
  function Generator() {}
  function GeneratorFunction() {}
  function GeneratorFunctionPrototype() {}

  // This is a polyfill for %IteratorPrototype% for environments that
  // don't natively support it.
  var IteratorPrototype = {};
  IteratorPrototype[iteratorSymbol] = function () {
    return this;
  };

  var getProto = Object.getPrototypeOf;
  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
  if (NativeIteratorPrototype &&
      NativeIteratorPrototype !== Op &&
      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
    // This environment has a native %IteratorPrototype%; use it instead
    // of the polyfill.
    IteratorPrototype = NativeIteratorPrototype;
  }

  var Gp = GeneratorFunctionPrototype.prototype =
    Generator.prototype = Object.create(IteratorPrototype);
  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
  GeneratorFunctionPrototype.constructor = GeneratorFunction;
  GeneratorFunctionPrototype[toStringTagSymbol] =
    GeneratorFunction.displayName = "GeneratorFunction";

  // Helper for defining the .next, .throw, and .return methods of the
  // Iterator interface in terms of a single ._invoke method.
  function defineIteratorMethods(prototype) {
    ["next", "throw", "return"].forEach(function(method) {
      prototype[method] = function(arg) {
        return this._invoke(method, arg);
      };
    });
  }

  runtime.isGeneratorFunction = function(genFun) {
    var ctor = typeof genFun === "function" && genFun.constructor;
    return ctor
      ? ctor === GeneratorFunction ||
        // For the native GeneratorFunction constructor, the best we can
        // do is to check its .name property.
        (ctor.displayName || ctor.name) === "GeneratorFunction"
      : false;
  };

  runtime.mark = function(genFun) {
    if (Object.setPrototypeOf) {
      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
    } else {
      genFun.__proto__ = GeneratorFunctionPrototype;
      if (!(toStringTagSymbol in genFun)) {
        genFun[toStringTagSymbol] = "GeneratorFunction";
      }
    }
    genFun.prototype = Object.create(Gp);
    return genFun;
  };

  // Within the body of any async function, `await x` is transformed to
  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
  // `hasOwn.call(value, "__await")` to determine if the yielded value is
  // meant to be awaited.
  runtime.awrap = function(arg) {
    return { __await: arg };
  };

  function AsyncIterator(generator) {
    function invoke(method, arg, resolve, reject) {
      var record = tryCatch(generator[method], generator, arg);
      if (record.type === "throw") {
        reject(record.arg);
      } else {
        var result = record.arg;
        var value = result.value;
        if (value &&
            typeof value === "object" &&
            hasOwn.call(value, "__await")) {
          return Promise.resolve(value.__await).then(function(value) {
            invoke("next", value, resolve, reject);
          }, function(err) {
            invoke("throw", err, resolve, reject);
          });
        }

        return Promise.resolve(value).then(function(unwrapped) {
          // When a yielded Promise is resolved, its final value becomes
          // the .value of the Promise<{value,done}> result for the
          // current iteration. If the Promise is rejected, however, the
          // result for this iteration will be rejected with the same
          // reason. Note that rejections of yielded Promises are not
          // thrown back into the generator function, as is the case
          // when an awaited Promise is rejected. This difference in
          // behavior between yield and await is important, because it
          // allows the consumer to decide what to do with the yielded
          // rejection (swallow it and continue, manually .throw it back
          // into the generator, abandon iteration, whatever). With
          // await, by contrast, there is no opportunity to examine the
          // rejection reason outside the generator function, so the
          // only option is to throw it from the await expression, and
          // let the generator function handle the exception.
          result.value = unwrapped;
          resolve(result);
        }, reject);
      }
    }

    var previousPromise;

    function enqueue(method, arg) {
      function callInvokeWithMethodAndArg() {
        return new Promise(function(resolve, reject) {
          invoke(method, arg, resolve, reject);
        });
      }

      return previousPromise =
        // If enqueue has been called before, then we want to wait until
        // all previous Promises have been resolved before calling invoke,
        // so that results are always delivered in the correct order. If
        // enqueue has not been called before, then it is important to
        // call invoke immediately, without waiting on a callback to fire,
        // so that the async generator function has the opportunity to do
        // any necessary setup in a predictable way. This predictability
        // is why the Promise constructor synchronously invokes its
        // executor callback, and why async functions synchronously
        // execute code before the first await. Since we implement simple
        // async functions in terms of async generators, it is especially
        // important to get this right, even though it requires care.
        previousPromise ? previousPromise.then(
          callInvokeWithMethodAndArg,
          // Avoid propagating failures to Promises returned by later
          // invocations of the iterator.
          callInvokeWithMethodAndArg
        ) : callInvokeWithMethodAndArg();
    }

    // Define the unified helper method that is used to implement .next,
    // .throw, and .return (see defineIteratorMethods).
    this._invoke = enqueue;
  }

  defineIteratorMethods(AsyncIterator.prototype);
  AsyncIterator.prototype[asyncIteratorSymbol] = function () {
    return this;
  };
  runtime.AsyncIterator = AsyncIterator;

  // Note that simple async functions are implemented on top of
  // AsyncIterator objects; they just return a Promise for the value of
  // the final result produced by the iterator.
  runtime.async = function(innerFn, outerFn, self, tryLocsList) {
    var iter = new AsyncIterator(
      wrap(innerFn, outerFn, self, tryLocsList)
    );

    return runtime.isGeneratorFunction(outerFn)
      ? iter // If outerFn is a generator, return the full iterator.
      : iter.next().then(function(result) {
          return result.done ? result.value : iter.next();
        });
  };

  function makeInvokeMethod(innerFn, self, context) {
    var state = GenStateSuspendedStart;

    return function invoke(method, arg) {
      if (state === GenStateExecuting) {
        throw new Error("Generator is already running");
      }

      if (state === GenStateCompleted) {
        if (method === "throw") {
          throw arg;
        }

        // Be forgiving, per 25.3.3.3.3 of the spec:
        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
        return doneResult();
      }

      context.method = method;
      context.arg = arg;

      while (true) {
        var delegate = context.delegate;
        if (delegate) {
          var delegateResult = maybeInvokeDelegate(delegate, context);
          if (delegateResult) {
            if (delegateResult === ContinueSentinel) continue;
            return delegateResult;
          }
        }

        if (context.method === "next") {
          // Setting context._sent for legacy support of Babel's
          // function.sent implementation.
          context.sent = context._sent = context.arg;

        } else if (context.method === "throw") {
          if (state === GenStateSuspendedStart) {
            state = GenStateCompleted;
            throw context.arg;
          }

          context.dispatchException(context.arg);

        } else if (context.method === "return") {
          context.abrupt("return", context.arg);
        }

        state = GenStateExecuting;

        var record = tryCatch(innerFn, self, context);
        if (record.type === "normal") {
          // If an exception is thrown from innerFn, we leave state ===
          // GenStateExecuting and loop back for another invocation.
          state = context.done
            ? GenStateCompleted
            : GenStateSuspendedYield;

          if (record.arg === ContinueSentinel) {
            continue;
          }

          return {
            value: record.arg,
            done: context.done
          };

        } else if (record.type === "throw") {
          state = GenStateCompleted;
          // Dispatch the exception by looping back around to the
          // context.dispatchException(context.arg) call above.
          context.method = "throw";
          context.arg = record.arg;
        }
      }
    };
  }

  // Call delegate.iterator[context.method](context.arg) and handle the
  // result, either by returning a { value, done } result from the
  // delegate iterator, or by modifying context.method and context.arg,
  // setting context.delegate to null, and returning the ContinueSentinel.
  function maybeInvokeDelegate(delegate, context) {
    var method = delegate.iterator[context.method];
    if (method === undefined) {
      // A .throw or .return when the delegate iterator has no .throw
      // method always terminates the yield* loop.
      context.delegate = null;

      if (context.method === "throw") {
        if (delegate.iterator.return) {
          // If the delegate iterator has a return method, give it a
          // chance to clean up.
          context.method = "return";
          context.arg = undefined;
          maybeInvokeDelegate(delegate, context);

          if (context.method === "throw") {
            // If maybeInvokeDelegate(context) changed context.method from
            // "return" to "throw", let that override the TypeError below.
            return ContinueSentinel;
          }
        }

        context.method = "throw";
        context.arg = new TypeError(
          "The iterator does not provide a 'throw' method");
      }

      return ContinueSentinel;
    }

    var record = tryCatch(method, delegate.iterator, context.arg);

    if (record.type === "throw") {
      context.method = "throw";
      context.arg = record.arg;
      context.delegate = null;
      return ContinueSentinel;
    }

    var info = record.arg;

    if (! info) {
      context.method = "throw";
      context.arg = new TypeError("iterator result is not an object");
      context.delegate = null;
      return ContinueSentinel;
    }

    if (info.done) {
      // Assign the result of the finished delegate to the temporary
      // variable specified by delegate.resultName (see delegateYield).
      context[delegate.resultName] = info.value;

      // Resume execution at the desired location (see delegateYield).
      context.next = delegate.nextLoc;

      // If context.method was "throw" but the delegate handled the
      // exception, let the outer generator proceed normally. If
      // context.method was "next", forget context.arg since it has been
      // "consumed" by the delegate iterator. If context.method was
      // "return", allow the original .return call to continue in the
      // outer generator.
      if (context.method !== "return") {
        context.method = "next";
        context.arg = undefined;
      }

    } else {
      // Re-yield the result returned by the delegate method.
      return info;
    }

    // The delegate iterator is finished, so forget it and continue with
    // the outer generator.
    context.delegate = null;
    return ContinueSentinel;
  }

  // Define Generator.prototype.{next,throw,return} in terms of the
  // unified ._invoke helper method.
  defineIteratorMethods(Gp);

  Gp[toStringTagSymbol] = "Generator";

  // A Generator should always return itself as the iterator object when the
  // @@iterator function is called on it. Some browsers' implementations of the
  // iterator prototype chain incorrectly implement this, causing the Generator
  // object to not be returned from this call. This ensures that doesn't happen.
  // See https://github.com/facebook/regenerator/issues/274 for more details.
  Gp[iteratorSymbol] = function() {
    return this;
  };

  Gp.toString = function() {
    return "[object Generator]";
  };

  function pushTryEntry(locs) {
    var entry = { tryLoc: locs[0] };

    if (1 in locs) {
      entry.catchLoc = locs[1];
    }

    if (2 in locs) {
      entry.finallyLoc = locs[2];
      entry.afterLoc = locs[3];
    }

    this.tryEntries.push(entry);
  }

  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal";
    delete record.arg;
    entry.completion = record;
  }

  function Context(tryLocsList) {
    // The root entry object (effectively a try statement without a catch
    // or a finally block) gives us a place to store values thrown from
    // locations where there is no enclosing try statement.
    this.tryEntries = [{ tryLoc: "root" }];
    tryLocsList.forEach(pushTryEntry, this);
    this.reset(true);
  }

  runtime.keys = function(object) {
    var keys = [];
    for (var key in object) {
      keys.push(key);
    }
    keys.reverse();

    // Rather than returning an object with a next method, we keep
    // things simple and return the next function itself.
    return function next() {
      while (keys.length) {
        var key = keys.pop();
        if (key in object) {
          next.value = key;
          next.done = false;
          return next;
        }
      }

      // To avoid creating an additional object, we just hang the .value
      // and .done properties off the next function object itself. This
      // also ensures that the minifier will not anonymize the function.
      next.done = true;
      return next;
    };
  };

  function values(iterable) {
    if (iterable) {
      var iteratorMethod = iterable[iteratorSymbol];
      if (iteratorMethod) {
        return iteratorMethod.call(iterable);
      }

      if (typeof iterable.next === "function") {
        return iterable;
      }

      if (!isNaN(iterable.length)) {
        var i = -1, next = function next() {
          while (++i < iterable.length) {
            if (hasOwn.call(iterable, i)) {
              next.value = iterable[i];
              next.done = false;
              return next;
            }
          }

          next.value = undefined;
          next.done = true;

          return next;
        };

        return next.next = next;
      }
    }

    // Return an iterator with no values.
    return { next: doneResult };
  }
  runtime.values = values;

  function doneResult() {
    return { value: undefined, done: true };
  }

  Context.prototype = {
    constructor: Context,

    reset: function(skipTempReset) {
      this.prev = 0;
      this.next = 0;
      // Resetting context._sent for legacy support of Babel's
      // function.sent implementation.
      this.sent = this._sent = undefined;
      this.done = false;
      this.delegate = null;

      this.method = "next";
      this.arg = undefined;

      this.tryEntries.forEach(resetTryEntry);

      if (!skipTempReset) {
        for (var name in this) {
          // Not sure about the optimal order of these conditions:
          if (name.charAt(0) === "t" &&
              hasOwn.call(this, name) &&
              !isNaN(+name.slice(1))) {
            this[name] = undefined;
          }
        }
      }
    },

    stop: function() {
      this.done = true;

      var rootEntry = this.tryEntries[0];
      var rootRecord = rootEntry.completion;
      if (rootRecord.type === "throw") {
        throw rootRecord.arg;
      }

      return this.rval;
    },

    dispatchException: function(exception) {
      if (this.done) {
        throw exception;
      }

      var context = this;
      function handle(loc, caught) {
        record.type = "throw";
        record.arg = exception;
        context.next = loc;

        if (caught) {
          // If the dispatched exception was caught by a catch block,
          // then let that catch block handle the exception normally.
          context.method = "next";
          context.arg = undefined;
        }

        return !! caught;
      }

      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        var record = entry.completion;

        if (entry.tryLoc === "root") {
          // Exception thrown outside of any try block that could handle
          // it, so set the completion value of the entire function to
          // throw the exception.
          return handle("end");
        }

        if (entry.tryLoc <= this.prev) {
          var hasCatch = hasOwn.call(entry, "catchLoc");
          var hasFinally = hasOwn.call(entry, "finallyLoc");

          if (hasCatch && hasFinally) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            } else if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else if (hasCatch) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            }

          } else if (hasFinally) {
            if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else {
            throw new Error("try statement without catch or finally");
          }
        }
      }
    },

    abrupt: function(type, arg) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc <= this.prev &&
            hasOwn.call(entry, "finallyLoc") &&
            this.prev < entry.finallyLoc) {
          var finallyEntry = entry;
          break;
        }
      }

      if (finallyEntry &&
          (type === "break" ||
           type === "continue") &&
          finallyEntry.tryLoc <= arg &&
          arg <= finallyEntry.finallyLoc) {
        // Ignore the finally entry if control is not jumping to a
        // location outside the try/catch block.
        finallyEntry = null;
      }

      var record = finallyEntry ? finallyEntry.completion : {};
      record.type = type;
      record.arg = arg;

      if (finallyEntry) {
        this.method = "next";
        this.next = finallyEntry.finallyLoc;
        return ContinueSentinel;
      }

      return this.complete(record);
    },

    complete: function(record, afterLoc) {
      if (record.type === "throw") {
        throw record.arg;
      }

      if (record.type === "break" ||
          record.type === "continue") {
        this.next = record.arg;
      } else if (record.type === "return") {
        this.rval = this.arg = record.arg;
        this.method = "return";
        this.next = "end";
      } else if (record.type === "normal" && afterLoc) {
        this.next = afterLoc;
      }

      return ContinueSentinel;
    },

    finish: function(finallyLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.finallyLoc === finallyLoc) {
          this.complete(entry.completion, entry.afterLoc);
          resetTryEntry(entry);
          return ContinueSentinel;
        }
      }
    },

    "catch": function(tryLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc === tryLoc) {
          var record = entry.completion;
          if (record.type === "throw") {
            var thrown = record.arg;
            resetTryEntry(entry);
          }
          return thrown;
        }
      }

      // The context.catch method must only be called with a location
      // argument that corresponds to a known catch block.
      throw new Error("illegal catch attempt");
    },

    delegateYield: function(iterable, resultName, nextLoc) {
      this.delegate = {
        iterator: values(iterable),
        resultName: resultName,
        nextLoc: nextLoc
      };

      if (this.method === "next") {
        // Deliberately forget the last sent value so that we don't
        // accidentally pass it on to the delegate.
        this.arg = undefined;
      }

      return ContinueSentinel;
    }
  };
})(
  // In sloppy mode, unbound `this` refers to the global object, fallback to
  // Function constructor if we're in global strict mode. That is sadly a form
  // of indirect eval which violates Content Security Policy.
  (function() { return this })() || Function("return this")()
);
});

// true  -> String#at
// false -> String#codePointAt
var _stringAt = function (TO_STRING) {
  return function (that, pos) {
    var s = String(defined(that));
    var i = toInteger(pos);
    var l = s.length;
    var a, b;
    if (i < 0 || i >= l) return TO_STRING ? '' : undefined;
    a = s.charCodeAt(i);
    return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff
      ? TO_STRING ? s.charAt(i) : a
      : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000;
  };
};

var _stringAt$1 = /*#__PURE__*/Object.freeze({
	default: _stringAt,
	__moduleExports: _stringAt
});

var require$$0$a = ( _stringAt$1 && _stringAt ) || _stringAt$1;

var $at = require$$0$a(true);

// 21.1.3.27 String.prototype[@@iterator]()
$iterDefine(String, 'String', function (iterated) {
  this._t = String(iterated); // target
  this._i = 0;                // next index
// 21.1.5.2.1 %StringIteratorPrototype%.next()
}, function () {
  var O = this._t;
  var index = this._i;
  var point;
  if (index >= O.length) return { value: undefined, done: true };
  point = $at(O, index);
  this._i += point.length;
  return { value: point, done: false };
});

var _redefineAll = function (target, src, safe) {
  for (var key in src) redefine(target, key, src[key], safe);
  return target;
};

var _redefineAll$1 = /*#__PURE__*/Object.freeze({
	default: _redefineAll,
	__moduleExports: _redefineAll
});

var _anInstance = function (it, Constructor, name, forbiddenField) {
  if (!(it instanceof Constructor) || (forbiddenField !== undefined && forbiddenField in it)) {
    throw TypeError(name + ': incorrect invocation!');
  } return it;
};

var _anInstance$1 = /*#__PURE__*/Object.freeze({
	default: _anInstance,
	__moduleExports: _anInstance
});

// call something on iterator step with safe closing on error

var _iterCall = function (iterator, fn, value, entries) {
  try {
    return entries ? fn(anObject(value)[0], value[1]) : fn(value);
  // 7.4.6 IteratorClose(iterator, completion)
  } catch (e) {
    var ret = iterator['return'];
    if (ret !== undefined) anObject(ret.call(iterator));
    throw e;
  }
};

var _iterCall$1 = /*#__PURE__*/Object.freeze({
	default: _iterCall,
	__moduleExports: _iterCall
});

// check on default Array iterator

var ITERATOR$2 = require$$0$7('iterator');
var ArrayProto$1 = Array.prototype;

var _isArrayIter = function (it) {
  return it !== undefined && (Iterators.Array === it || ArrayProto$1[ITERATOR$2] === it);
};

var _isArrayIter$1 = /*#__PURE__*/Object.freeze({
	default: _isArrayIter,
	__moduleExports: _isArrayIter
});

// getting tag from 19.1.3.6 Object.prototype.toString()

var TAG$1 = require$$0$7('toStringTag');
// ES3 wrong here
var ARG = cof(function () { return arguments; }()) == 'Arguments';

// fallback for IE11 Script Access Denied error
var tryGet = function (it, key) {
  try {
    return it[key];
  } catch (e) { /* empty */ }
};

var _classof = function (it) {
  var O, T, B;
  return it === undefined ? 'Undefined' : it === null ? 'Null'
    // @@toStringTag case
    : typeof (T = tryGet(O = Object(it), TAG$1)) == 'string' ? T
    // builtinTag case
    : ARG ? cof(O)
    // ES3 arguments fallback
    : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;
};

var _classof$1 = /*#__PURE__*/Object.freeze({
	default: _classof,
	__moduleExports: _classof
});

var classof = ( _classof$1 && _classof ) || _classof$1;

var ITERATOR$3 = require$$0$7('iterator');

var core_getIteratorMethod = require$$1$1.getIteratorMethod = function (it) {
  if (it != undefined) return it[ITERATOR$3]
    || it['@@iterator']
    || Iterators[classof(it)];
};

var core_getIteratorMethod$1 = /*#__PURE__*/Object.freeze({
	default: core_getIteratorMethod,
	__moduleExports: core_getIteratorMethod
});

var call = ( _iterCall$1 && _iterCall ) || _iterCall$1;

var isArrayIter = ( _isArrayIter$1 && _isArrayIter ) || _isArrayIter$1;

var getIterFn = ( core_getIteratorMethod$1 && core_getIteratorMethod ) || core_getIteratorMethod$1;

var _forOf = createCommonjsModule(function (module) {
var BREAK = {};
var RETURN = {};
var exports = module.exports = function (iterable, entries, fn, that, ITERATOR) {
  var iterFn = ITERATOR ? function () { return iterable; } : getIterFn(iterable);
  var f = require$$0$1(fn, that, entries ? 2 : 1);
  var index = 0;
  var length, step, iterator, result;
  if (typeof iterFn != 'function') throw TypeError(iterable + ' is not iterable!');
  // fast case for arrays with default iterator
  if (isArrayIter(iterFn)) for (length = toLength(iterable.length); length > index; index++) {
    result = entries ? f(anObject(step = iterable[index])[0], step[1]) : f(iterable[index]);
    if (result === BREAK || result === RETURN) return result;
  } else for (iterator = iterFn.call(iterable); !(step = iterator.next()).done;) {
    result = call(iterator, f, step.value, entries);
    if (result === BREAK || result === RETURN) return result;
  }
};
exports.BREAK = BREAK;
exports.RETURN = RETURN;
});

var _forOf$1 = /*#__PURE__*/Object.freeze({
	default: _forOf,
	__moduleExports: _forOf
});

var SPECIES$1 = require$$0$7('species');

var _setSpecies = function (KEY) {
  var C = global$1[KEY];
  if (DESCRIPTORS && C && !C[SPECIES$1]) dP$1.f(C, SPECIES$1, {
    configurable: true,
    get: function () { return this; }
  });
};

var _setSpecies$1 = /*#__PURE__*/Object.freeze({
	default: _setSpecies,
	__moduleExports: _setSpecies
});

var _validateCollection = function (it, TYPE) {
  if (!isObject(it) || it._t !== TYPE) throw TypeError('Incompatible receiver, ' + TYPE + ' required!');
  return it;
};

var _validateCollection$1 = /*#__PURE__*/Object.freeze({
	default: _validateCollection,
	__moduleExports: _validateCollection
});

var redefineAll = ( _redefineAll$1 && _redefineAll ) || _redefineAll$1;

var anInstance = ( _anInstance$1 && _anInstance ) || _anInstance$1;

var forOf = ( _forOf$1 && _forOf ) || _forOf$1;

var setSpecies = ( _setSpecies$1 && _setSpecies ) || _setSpecies$1;

var validate = ( _validateCollection$1 && _validateCollection ) || _validateCollection$1;

var dP$3 = dP$1.f;









var fastKey = meta.fastKey;

var SIZE = DESCRIPTORS ? '_s' : 'size';

var getEntry = function (that, key) {
  // fast case
  var index = fastKey(key);
  var entry;
  if (index !== 'F') return that._i[index];
  // frozen object case
  for (entry = that._f; entry; entry = entry.n) {
    if (entry.k == key) return entry;
  }
};

var _collectionStrong = {
  getConstructor: function (wrapper, NAME, IS_MAP, ADDER) {
    var C = wrapper(function (that, iterable) {
      anInstance(that, C, NAME, '_i');
      that._t = NAME;         // collection type
      that._i = create(null); // index
      that._f = undefined;    // first entry
      that._l = undefined;    // last entry
      that[SIZE] = 0;         // size
      if (iterable != undefined) forOf(iterable, IS_MAP, that[ADDER], that);
    });
    redefineAll(C.prototype, {
      // 23.1.3.1 Map.prototype.clear()
      // 23.2.3.2 Set.prototype.clear()
      clear: function clear() {
        for (var that = validate(this, NAME), data = that._i, entry = that._f; entry; entry = entry.n) {
          entry.r = true;
          if (entry.p) entry.p = entry.p.n = undefined;
          delete data[entry.i];
        }
        that._f = that._l = undefined;
        that[SIZE] = 0;
      },
      // 23.1.3.3 Map.prototype.delete(key)
      // 23.2.3.4 Set.prototype.delete(value)
      'delete': function (key) {
        var that = validate(this, NAME);
        var entry = getEntry(that, key);
        if (entry) {
          var next = entry.n;
          var prev = entry.p;
          delete that._i[entry.i];
          entry.r = true;
          if (prev) prev.n = next;
          if (next) next.p = prev;
          if (that._f == entry) that._f = next;
          if (that._l == entry) that._l = prev;
          that[SIZE]--;
        } return !!entry;
      },
      // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)
      // 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined)
      forEach: function forEach(callbackfn /* , that = undefined */) {
        validate(this, NAME);
        var f = require$$0$1(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
        var entry;
        while (entry = entry ? entry.n : this._f) {
          f(entry.v, entry.k, this);
          // revert to the last existing entry
          while (entry && entry.r) entry = entry.p;
        }
      },
      // 23.1.3.7 Map.prototype.has(key)
      // 23.2.3.7 Set.prototype.has(value)
      has: function has(key) {
        return !!getEntry(validate(this, NAME), key);
      }
    });
    if (DESCRIPTORS) dP$3(C.prototype, 'size', {
      get: function () {
        return validate(this, NAME)[SIZE];
      }
    });
    return C;
  },
  def: function (that, key, value) {
    var entry = getEntry(that, key);
    var prev, index;
    // change existing entry
    if (entry) {
      entry.v = value;
    // create new entry
    } else {
      that._l = entry = {
        i: index = fastKey(key, true), // <- index
        k: key,                        // <- key
        v: value,                      // <- value
        p: prev = that._l,             // <- previous entry
        n: undefined,                  // <- next entry
        r: false                       // <- removed
      };
      if (!that._f) that._f = entry;
      if (prev) prev.n = entry;
      that[SIZE]++;
      // add to index
      if (index !== 'F') that._i[index] = entry;
    } return that;
  },
  getEntry: getEntry,
  setStrong: function (C, NAME, IS_MAP) {
    // add .keys, .values, .entries, [@@iterator]
    // 23.1.3.4, 23.1.3.8, 23.1.3.11, 23.1.3.12, 23.2.3.5, 23.2.3.8, 23.2.3.10, 23.2.3.11
    $iterDefine(C, NAME, function (iterated, kind) {
      this._t = validate(iterated, NAME); // target
      this._k = kind;                     // kind
      this._l = undefined;                // previous
    }, function () {
      var that = this;
      var kind = that._k;
      var entry = that._l;
      // revert to the last existing entry
      while (entry && entry.r) entry = entry.p;
      // get next entry
      if (!that._t || !(that._l = entry = entry ? entry.n : that._t._f)) {
        // or finish the iteration
        that._t = undefined;
        return step(1);
      }
      // return step by kind
      if (kind == 'keys') return step(0, entry.k);
      if (kind == 'values') return step(0, entry.v);
      return step(0, [entry.k, entry.v]);
    }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);

    // add [@@species], 23.1.2.2, 23.2.2.2
    setSpecies(NAME);
  }
};
var _collectionStrong_1 = _collectionStrong.getConstructor;
var _collectionStrong_2 = _collectionStrong.def;
var _collectionStrong_3 = _collectionStrong.getEntry;
var _collectionStrong_4 = _collectionStrong.setStrong;

var _collectionStrong$1 = /*#__PURE__*/Object.freeze({
	default: _collectionStrong,
	__moduleExports: _collectionStrong,
	getConstructor: _collectionStrong_1,
	def: _collectionStrong_2,
	getEntry: _collectionStrong_3,
	setStrong: _collectionStrong_4
});

var ITERATOR$4 = require$$0$7('iterator');
var SAFE_CLOSING = false;

try {
  var riter = [7][ITERATOR$4]();
  riter['return'] = function () { SAFE_CLOSING = true; };
} catch (e) { /* empty */ }

var _iterDetect = function (exec, skipClosing) {
  if (!skipClosing && !SAFE_CLOSING) return false;
  var safe = false;
  try {
    var arr = [7];
    var iter = arr[ITERATOR$4]();
    iter.next = function () { return { done: safe = true }; };
    arr[ITERATOR$4] = function () { return iter; };
    exec(arr);
  } catch (e) { /* empty */ }
  return safe;
};

var _iterDetect$1 = /*#__PURE__*/Object.freeze({
	default: _iterDetect,
	__moduleExports: _iterDetect
});

// Works with __proto__ only. Old v8 can't work with null proto objects.
/* eslint-disable no-proto */


var check = function (O, proto) {
  anObject(O);
  if (!isObject(proto) && proto !== null) throw TypeError(proto + ": can't set as prototype!");
};
var _setProto = {
  set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line
    function (test, buggy, set) {
      try {
        set = require$$0$1(Function.call, require$$1$2.f(Object.prototype, '__proto__').set, 2);
        set(test, []);
        buggy = !(test instanceof Array);
      } catch (e) { buggy = true; }
      return function setPrototypeOf(O, proto) {
        check(O, proto);
        if (buggy) O.__proto__ = proto;
        else set(O, proto);
        return O;
      };
    }({}, false) : undefined),
  check: check
};
var _setProto_1 = _setProto.set;
var _setProto_2 = _setProto.check;

var _setProto$1 = /*#__PURE__*/Object.freeze({
	default: _setProto,
	__moduleExports: _setProto,
	set: _setProto_1,
	check: _setProto_2
});

var require$$0$b = ( _setProto$1 && _setProto ) || _setProto$1;

var setPrototypeOf = require$$0$b.set;
var _inheritIfRequired = function (that, target, C) {
  var S = target.constructor;
  var P;
  if (S !== C && typeof S == 'function' && (P = S.prototype) !== C.prototype && isObject(P) && setPrototypeOf) {
    setPrototypeOf(that, P);
  } return that;
};

var _inheritIfRequired$1 = /*#__PURE__*/Object.freeze({
	default: _inheritIfRequired,
	__moduleExports: _inheritIfRequired
});

var $iterDetect = ( _iterDetect$1 && _iterDetect ) || _iterDetect$1;

var inheritIfRequired = ( _inheritIfRequired$1 && _inheritIfRequired ) || _inheritIfRequired$1;

var _collection = function (NAME, wrapper, methods, common, IS_MAP, IS_WEAK) {
  var Base = global$1[NAME];
  var C = Base;
  var ADDER = IS_MAP ? 'set' : 'add';
  var proto = C && C.prototype;
  var O = {};
  var fixMethod = function (KEY) {
    var fn = proto[KEY];
    redefine(proto, KEY,
      KEY == 'delete' ? function (a) {
        return IS_WEAK && !isObject(a) ? false : fn.call(this, a === 0 ? 0 : a);
      } : KEY == 'has' ? function has(a) {
        return IS_WEAK && !isObject(a) ? false : fn.call(this, a === 0 ? 0 : a);
      } : KEY == 'get' ? function get(a) {
        return IS_WEAK && !isObject(a) ? undefined : fn.call(this, a === 0 ? 0 : a);
      } : KEY == 'add' ? function add(a) { fn.call(this, a === 0 ? 0 : a); return this; }
        : function set(a, b) { fn.call(this, a === 0 ? 0 : a, b); return this; }
    );
  };
  if (typeof C != 'function' || !(IS_WEAK || proto.forEach && !require$$1(function () {
    new C().entries().next();
  }))) {
    // create collection constructor
    C = common.getConstructor(wrapper, NAME, IS_MAP, ADDER);
    redefineAll(C.prototype, methods);
    meta.NEED = true;
  } else {
    var instance = new C();
    // early implementations not supports chaining
    var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
    // V8 ~  Chromium 40- weak-collections throws on primitives, but should return false
    var THROWS_ON_PRIMITIVES = require$$1(function () { instance.has(1); });
    // most early implementations doesn't supports iterables, most modern - not close it correctly
    var ACCEPT_ITERABLES = $iterDetect(function (iter) { new C(iter); }); // eslint-disable-line no-new
    // for early implementations -0 and +0 not the same
    var BUGGY_ZERO = !IS_WEAK && require$$1(function () {
      // V8 ~ Chromium 42- fails only with 5+ elements
      var $instance = new C();
      var index = 5;
      while (index--) $instance[ADDER](index, index);
      return !$instance.has(-0);
    });
    if (!ACCEPT_ITERABLES) {
      C = wrapper(function (target, iterable) {
        anInstance(target, C, NAME);
        var that = inheritIfRequired(new Base(), target, C);
        if (iterable != undefined) forOf(iterable, IS_MAP, that[ADDER], that);
        return that;
      });
      C.prototype = proto;
      proto.constructor = C;
    }
    if (THROWS_ON_PRIMITIVES || BUGGY_ZERO) {
      fixMethod('delete');
      fixMethod('has');
      IS_MAP && fixMethod('get');
    }
    if (BUGGY_ZERO || HASNT_CHAINING) fixMethod(ADDER);
    // weak collections should not contains .clear method
    if (IS_WEAK && proto.clear) delete proto.clear;
  }

  setToStringTag(C, NAME);

  O[NAME] = C;
  $export$1($export$1.G + $export$1.W + $export$1.F * (C != Base), O);

  if (!IS_WEAK) common.setStrong(C, NAME, IS_MAP);

  return C;
};

var _collection$1 = /*#__PURE__*/Object.freeze({
	default: _collection,
	__moduleExports: _collection
});

var strong = ( _collectionStrong$1 && _collectionStrong ) || _collectionStrong$1;

var require$$0$c = ( _collection$1 && _collection ) || _collection$1;

var SET = 'Set';

// 23.2 Set Objects
var es6_set = require$$0$c(SET, function (get) {
  return function Set() { return get(this, arguments.length > 0 ? arguments[0] : undefined); };
}, {
  // 23.2.3.1 Set.prototype.add(value)
  add: function add(value) {
    return strong.def(validate(this, SET), value = value === 0 ? 0 : value, value);
  }
}, strong);

var $some = require$$0$9(3);

$export$1($export$1.P + $export$1.F * !require$$1$4([].some, true), 'Array', {
  // 22.1.3.23 / 15.4.4.17 Array.prototype.some(callbackfn [, thisArg])
  some: function some(callbackfn /* , thisArg */) {
    return $some(this, callbackfn, arguments[1]);
  }
});

var $sort = [].sort;
var test = [1, 2, 3];

$export$1($export$1.P + $export$1.F * (require$$1(function () {
  // IE8-
  test.sort(undefined);
}) || !require$$1(function () {
  // V8 bug
  test.sort(null);
  // Old WebKit
}) || !require$$1$4($sort)), 'Array', {
  // 22.1.3.25 Array.prototype.sort(comparefn)
  sort: function sort(comparefn) {
    return comparefn === undefined
      ? $sort.call(toObject(this))
      : $sort.call(toObject(this), aFunction(comparefn));
  }
});

var $filter = require$$0$9(2);

$export$1($export$1.P + $export$1.F * !require$$1$4([].filter, true), 'Array', {
  // 22.1.3.7 / 15.4.4.20 Array.prototype.filter(callbackfn [, thisArg])
  filter: function filter(callbackfn /* , thisArg */) {
    return $filter(this, callbackfn, arguments[1]);
  }
});

var $indexOf = require$$0$3(false);
var $native = [].indexOf;
var NEGATIVE_ZERO = !!$native && 1 / [1].indexOf(1, -0) < 0;

$export$1($export$1.P + $export$1.F * (NEGATIVE_ZERO || !require$$1$4($native)), 'Array', {
  // 22.1.3.11 / 15.4.4.14 Array.prototype.indexOf(searchElement [, fromIndex])
  indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
    return NEGATIVE_ZERO
      // convert -0 to +0
      ? $native.apply(this, arguments) || 0
      : $indexOf(this, searchElement, arguments[1]);
  }
});

// 22.1.3.8 Array.prototype.find(predicate, thisArg = undefined)

var $find = require$$0$9(5);
var KEY = 'find';
var forced = true;
// Shouldn't skip holes
if (KEY in []) Array(1)[KEY](function () { forced = false; });
$export$1($export$1.P + $export$1.F * forced, 'Array', {
  find: function find(callbackfn /* , that = undefined */) {
    return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
  }
});
require$$1$3(KEY);

var dP$4 = dP$1.f;
var FProto = Function.prototype;
var nameRE = /^\s*function ([^ (]*)/;
var NAME$1 = 'name';

// 19.2.4.2 name
NAME$1 in FProto || DESCRIPTORS && dP$4(FProto, NAME$1, {
  configurable: true,
  get: function () {
    try {
      return ('' + this).match(nameRE)[1];
    } catch (e) {
      return '';
    }
  }
});

var $map = require$$0$9(1);

$export$1($export$1.P + $export$1.F * !require$$1$4([].map, true), 'Array', {
  // 22.1.3.15 / 15.4.4.19 Array.prototype.map(callbackfn [, thisArg])
  map: function map(callbackfn /* , thisArg */) {
    return $map(this, callbackfn, arguments[1]);
  }
});

var GanttInvalidOp =
/*#__PURE__*/
function (_Error) {
  _inherits(GanttInvalidOp, _Error);

  function GanttInvalidOp(op) {
    _classCallCheck(this, GanttInvalidOp);

    return _possibleConstructorReturn(this, _getPrototypeOf(GanttInvalidOp).call(this, 'invalid operaion: ' + op));
  }

  return GanttInvalidOp;
}(_wrapNativeSuper(Error));

/**
 * Has own property.
 *
 * @type {Function}
 */

var has$1 = Object.prototype.hasOwnProperty;

/**
 * To string.
 *
 * @type {Function}
 */

var toString$2 = Object.prototype.toString;

/**
 * Test whether a value is "empty".
 *
 * @param {Mixed} val
 * @return {Boolean}
 */

function isEmpty(val) {
  // Null and Undefined...
  if (val == null) return true

  // Booleans...
  if ('boolean' == typeof val) return false

  // Numbers...
  if ('number' == typeof val) return val === 0

  // Strings...
  if ('string' == typeof val) return val.length === 0

  // Functions...
  if ('function' == typeof val) return val.length === 0

  // Arrays...
  if (Array.isArray(val)) return val.length === 0

  // Errors...
  if (val instanceof Error) return val.message === ''

  // Objects...
  if (val.toString == toString$2) {
    switch (val.toString()) {

      // Maps, Sets, Files and Errors...
      case '[object File]':
      case '[object Map]':
      case '[object Set]': {
        return val.size === 0
      }

      // Plain objects...
      case '[object Object]': {
        for (var key in val) {
          if (has$1.call(val, key)) return false
        }

        return true
      }
    }
  }

  // Anything else...
  return false
}

/**
 * Export `isEmpty`.
 *
 * @type {Function}
 */

var lib = isEmpty;

/*!
 * is-var-name | ISC (c) Shinnosuke Watanabe
 * https://github.com/shinnn/is-var-name
*/
function isVarName(str) {
	if (typeof str !== 'string') {
		return false;
	}

	if (str.trim() !== str) {
		return false;
	}

	try {
		new Function(str, 'var ' + str);
	} catch (e) {
		return false;
	}

	return true;
}

var arrayStartsWith_1 = createCommonjsModule(function (module, exports) {

Object.defineProperty(exports, "__esModule", {
  value: true
});
function arrayStartsWith(base, start) {
  for (let i = 0; i < start.length; i++) {
    if (base[i] !== start[i]) {
      return false;
    }
  }

  return true;
}

exports.default = arrayStartsWith;
});

var arrayStartsWith = unwrapExports(arrayStartsWith_1);

var arrayStartsWith$1 = /*#__PURE__*/Object.freeze({
	default: arrayStartsWith,
	__moduleExports: arrayStartsWith_1
});

var _arrayStartsWith = ( arrayStartsWith$1 && arrayStartsWith ) || arrayStartsWith$1;

var build = createCommonjsModule(function (module, exports) {

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



var _arrayStartsWith2 = _interopRequireDefault(_arrayStartsWith);

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

exports.default = _arrayStartsWith2.default;
});

var arrayStartsWith$2 = unwrapExports(build);

function taskError(taskName, tpl) {
  if (taskName instanceof Task) {
    taskName = taskName.canonicalName;
  }

  taskName = '[' + [].concat(taskName).map(function (it) {
    return "'".concat(it, "'");
  }).join(', ') + ']';
  return new Error(tpl(taskName));
}

var Task =
/*#__PURE__*/
function () {
  function Task(name, parent) {
    _classCallCheck(this, Task);

    name && this.name(name);
    this._parent = parent;
    this._onStartCbs = [];
    this._onFinishCbs = [];
    this._subTasks = [];
    this._dependsUpon = [];
    this._level = parent ? parent.level + 1 : 0;
    this._base = 0;
    this.$ = this.find;
    this.duration = this.expectedTimeSpan;
  }

  _createClass(Task, [{
    key: "base",
    value: function base(arg) {
      if (arg === void 0) {
        return this._base;
      }

      this._base = new Date(arg).getTime();
      return this;
    }
  }, {
    key: "name",
    value: function name(arg) {
      if (arg === void 0) {
        return this._name;
      }

      if (!isVarName(arg)) {
        throw new Error('invalid task name ' + arg + ', should use a valid javascript identifier name');
      }

      this._name = arg;
      return this;
    }
  }, {
    key: "bundle",
    value: function bundle(arg) {
      if (arg === void 0) {
        return this._bundle;
      }

      this._bundle = arg;
      return this;
    }
  }, {
    key: "label",
    value: function label(labelArg) {
      if (labelArg === void 0) {
        return this._label || this._name;
      }

      this._label = labelArg;
      return this;
    }
  }, {
    key: "addSubTask",
    value: function addSubTask(arg) {
      var task;

      if (arg instanceof Task) {
        task = arg;
      } else {
        if (typeof arg === 'function') {
          task = new Task('', this);
        } else if (typeof arg === 'string') {
          task = new Task(arg, this);
        } else {
          throw new Error('task must be a function or string');
        }
      }

      if (this._subTasks.hasOwnProperty(task.name())) {
        throw new Error('task ' + task.name() + ' already exists');
      }

      this._subTasks.push(task); // add at first, then apply function, otherwise sub task can't depends upon
      // some tasks


      if (typeof arg === 'function') {
        arg(task);
      }

      return this;
    }
  }, {
    key: "find",
    value: function find(taskName, updateFunc) {
      return this._findIter(taskName, updateFunc, this);
    }
  }, {
    key: "_findIter",
    value: function _findIter(taskName, updateFunc, root) {
      var taskNames = [].concat(taskName);

      if (taskNames.length === 0) {
        if (typeof updateFunc === 'function') {
          updateFunc.apply(root, [this]);
        }

        return this;
      }

      var idx = this._subTasks.map(function (it) {
        return it._name;
      }).indexOf(taskNames[0]);

      if (idx === -1) {
        return null;
      }

      return this._subTasks[idx].find(taskNames.slice(1), updateFunc, root);
    }
  }, {
    key: "moveSubTask",
    value: function moveSubTask(taskName, before) {
      var subTaskNames = this._subTasks.map(function (it) {
        return it.name();
      });

      var fromIdx = subTaskNames.indexOf(taskName);

      if (fromIdx === -1) {
        throw taskError(taskName, function (n) {
          return "no such task: ".concat(n);
        });
      }

      var toIdx = before ? subTaskNames.indexOf(before) : subTaskNames.length - 1;

      if (toIdx === -1) {
        throw taskError(taskName, function (n) {
          return "no such task: ".concat(n);
        });
      }

      var subTask = this._subTasks.splice(fromIdx, 1)[0];

      this._subTasks.splice(toIdx, 0, subTask);

      return this;
    }
  }, {
    key: "removeSubTask",
    value: function removeSubTask(taskName) {
      var subTasks = this._subTasks.filter(function (it) {
        return it.name() !== taskName;
      });

      if (subTasks.length === this._subTasks.length) {
        throw new Error('no such task: ' + taskName);
      }

      this._subTasks = subTasks;
      return this;
    }
  }, {
    key: "isMyAncestor",
    value: function isMyAncestor(task) {
      if (task instanceof Task) {
        task = task.canonicalName;
      }

      var myCanonicalName = this.canonicalName;

      for (var i = 0; i < task.length; ++i) {
        if (task[i] !== myCanonicalName[i]) {
          return false;
        }
      }

      return true;
    }
  }, {
    key: "getDependsUpon",
    value: function getDependsUpon() {
      if (!this._parent) {
        return [];
      }

      var dependsUpon = this._parent.getDependsUpon().concat(this._dependsUpon) // see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
      // array of array could be sorted
      .map(function (it) {
        return it.canonicalName;
      }).sort();

      if (!dependsUpon.length) {
        return [];
      }

      var pivot = dependsUpon[0];
      var ret = [pivot];
      var i = 0;

      while (i < dependsUpon.length) {
        if (!arrayStartsWith$2(dependsUpon[i], pivot)) {
          pivot = dependsUpon[i];
          ret.push(pivot);
        }

        ++i;
      }

      var root = this.root;
      return ret.map(function (it) {
        return root.$(it);
      });
    }
  }, {
    key: "doesDependUpon",
    value: function doesDependUpon(task) {
      if (task instanceof Task) {
        task = task.canonicalName;
      }

      return this.getDependsUpon().some(function (it) {
        return arrayStartsWith$2(task, it.canonicalName);
      });
    }
    /**
     * 设定依赖关系，并可能根据依赖关系调整expectedToStartAt
     * */

  }, {
    key: "dependsUpon",
    value: function dependsUpon() {
      for (var _len = arguments.length, canonicalNames = new Array(_len), _key = 0; _key < _len; _key++) {
        canonicalNames[_key] = arguments[_key];
      }

      if (canonicalNames.length === 0) {
        return this.getDependsUpon();
      }

      canonicalNames = canonicalNames.map(function (it) {
        return it instanceof Task ? it.canonicalName : it;
      });
      var dependsUpon = [];
      var root = this.root;
      var _iteratorNormalCompletion = true;
      var _didIteratorError = false;
      var _iteratorError = undefined;

      try {
        for (var _iterator = canonicalNames[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
          var n = _step.value;
          var task = root.$(n);

          if (!task) {
            throw taskError(n, function (n) {
              return "no such task: ".concat(n);
            });
          }

          if (this === task) {
            throw taskError(n, function (n) {
              return "can not depends upon self: ".concat(n);
            });
          }

          if (this.isMyAncestor(task)) {
            throw taskError(n, function (n) {
              return "can not depends upon ancestor: ".concat(n);
            });
          }

          if (this.doesDependUpon(task)) {
            throw taskError(n, function (n) {
              return "already depends upon task ".concat(n);
            });
          }

          if (task.doesDependUpon(this)) {
            throw taskError(n, function (n) {
              return "depends upon a task ".concat(n, " which depends on myself (cylic dependent)");
            });
          }

          dependsUpon.push(task);
        }
      } catch (err) {
        _didIteratorError = true;
        _iteratorError = err;
      } finally {
        try {
          if (!_iteratorNormalCompletion && _iterator.return != null) {
            _iterator.return();
          }
        } finally {
          if (_didIteratorError) {
            throw _iteratorError;
          }
        }
      }

      this._dependsUpon = this._dependsUpon.concat(dependsUpon);
      return this;
    }
  }, {
    key: "removeDependsUpon",
    value: function removeDependsUpon() {
      for (var _len2 = arguments.length, canonicalNames = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
        canonicalNames[_key2] = arguments[_key2];
      }

      canonicalNames = new Set(canonicalNames.map(function (it) {
        return it instanceof Task ? it.canonicalName : it;
      }).map(function (it) {
        return it.join('.');
      }));
      this._dependsUpon = this._dependsUpon.filter(function (it) {
        return !canonicalNames.has(it.canonicalName.join('.'));
      });
      return this;
    }
    /**
     * when this task is expected to start at.
     * it will equal to startAt when it is started
     * */

  }, {
    key: "start",
    value: function start(args) {
      return this.startAt(new Date(), args);
    }
  }, {
    key: "startAt",
    value: function startAt(t) {
      if (this.isLeaf) {
        if (t === void 0) {
          return this._startAt;
        }

        if (!(typeof t === 'string' || typeof t === 'number' || t instanceof Date)) {
          throw Error(t + ' should be string or number');
        }

        this._startAt = new Date(t).getTime();
      } else {
        if (t === void 0) {
          var startedTasks = this._subTasks.filter(function (it) {
            return it.startAt() !== void 0;
          });

          if (!startedTasks.length) {
            return;
          }

          return Math.min.apply(null, startedTasks.map(function (it) {
            return it.startAt();
          }));
        }

        throw Error('non-leaf task can not set start at');
      }

      return this;
    }
  }, {
    key: "startArg",
    value: function startArg(arg) {
      if (arg === void 0) {
        return this._startArg;
      }

      this._startArg = typeof arg === 'string' ? timestring(arg, 'ms') : arg;
      return this;
    }
  }, {
    key: "expectedTimeSpan",
    value: function expectedTimeSpan(arg) {
      if (this.isLeaf) {
        if (arg === void 0) {
          if (this.finishAt()) {
            if (this.startAt()) {
              return this.finishAt() - this.startAt();
            }

            return 0;
          }

          return this._expectedTimeSpan || 0;
        }

        this._expectedTimeSpan = typeof arg === 'string' ? timestring(arg, 'ms') : arg;
      } else {
        if (arg === void 0) {
          return this.expectedToFinishAt - this.expectedToStartAt;
        }

        throw new Error('non-leaf task can not set expected time span');
      }

      return this;
    }
  }, {
    key: "finish",
    value: function finish(args) {
      return this.finishAt(new Date(), args);
    }
  }, {
    key: "finishAt",
    value: function finishAt(t) {
      if (this.isLeaf) {
        if (t === void 0) {
          return this._finishAt;
        }

        if (!(typeof t === 'string' || typeof t === 'number' || t instanceof Date)) {
          throw Error(t + ' should be string or number');
        }

        this._finishAt = new Date(t).getTime();
      } else {
        if (t === void 0) {
          var finishedTasks = this._subTasks.filter(function (it) {
            return it.finishAt() !== void 0;
          });

          if (!finishedTasks.length) {
            return;
          }

          return Math.max.apply(null, finishedTasks.map(function (it) {
            return it.finishAt();
          }));
        }

        throw Error('non-leaf task can not set finish at');
      }

      return this;
    }
  }, {
    key: "description",
    value: function description(arg) {
      if (arg === void 0) {
        return this._description;
      }

      this._description = arg;
      return this;
    }
  }, {
    key: "finishArg",
    value: function finishArg(arg) {
      if (arg === void 0) {
        return this._finishArg;
      }

      this._finishArg = arg;
      return this;
    }
  }, {
    key: "opsFilter",
    value: function opsFilter(arg) {
      this._opsFilter = arg;
      return this;
    }
  }, {
    key: "perform",
    value: function () {
      var _perform = _asyncToGenerator(
      /*#__PURE__*/
      regeneratorRuntime.mark(function _callee(action, arg) {
        var _Task$OP_START$Task$O;

        var _iteratorNormalCompletion2, _didIteratorError2, _iteratorError2, _iterator2, _step2, cb, _iteratorNormalCompletion3, _didIteratorError3, _iteratorError3, _iterator3, _step3, _cb;

        return regeneratorRuntime.wrap(function _callee$(_context) {
          while (1) {
            switch (_context.prev = _context.next) {
              case 0:
                if (this.isLeaf) {
                  _context.next = 2;
                  break;
                }

                throw new Error('you can\'t perform operation upon non-leaf task');

              case 2:
                if (!(this.ops.indexOf(action) === -1)) {
                  _context.next = 4;
                  break;
                }

                throw new GanttInvalidOp(action);

              case 4:
                action = (_Task$OP_START$Task$O = {}, _defineProperty(_Task$OP_START$Task$O, Task.OP_START, 'start'), _defineProperty(_Task$OP_START$Task$O, Task.OP_FINISH, 'finish'), _Task$OP_START$Task$O)[action];
                this[action](arg);

                if (!(action === 'start')) {
                  _context.next = 35;
                  break;
                }

                _iteratorNormalCompletion2 = true;
                _didIteratorError2 = false;
                _iteratorError2 = undefined;
                _context.prev = 10;
                _iterator2 = this._onStartCbs[Symbol.iterator]();

              case 12:
                if (_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done) {
                  _context.next = 19;
                  break;
                }

                cb = _step2.value;
                _context.next = 16;
                return cb.call(this);

              case 16:
                _iteratorNormalCompletion2 = true;
                _context.next = 12;
                break;

              case 19:
                _context.next = 25;
                break;

              case 21:
                _context.prev = 21;
                _context.t0 = _context["catch"](10);
                _didIteratorError2 = true;
                _iteratorError2 = _context.t0;

              case 25:
                _context.prev = 25;
                _context.prev = 26;

                if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
                  _iterator2.return();
                }

              case 28:
                _context.prev = 28;

                if (!_didIteratorError2) {
                  _context.next = 31;
                  break;
                }

                throw _iteratorError2;

              case 31:
                return _context.finish(28);

              case 32:
                return _context.finish(25);

              case 33:
                _context.next = 62;
                break;

              case 35:
                if (!(action === 'finish')) {
                  _context.next = 62;
                  break;
                }

                _iteratorNormalCompletion3 = true;
                _didIteratorError3 = false;
                _iteratorError3 = undefined;
                _context.prev = 39;
                _iterator3 = this._onFinishCbs[Symbol.iterator]();

              case 41:
                if (_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done) {
                  _context.next = 48;
                  break;
                }

                _cb = _step3.value;
                _context.next = 45;
                return _cb.call(this);

              case 45:
                _iteratorNormalCompletion3 = true;
                _context.next = 41;
                break;

              case 48:
                _context.next = 54;
                break;

              case 50:
                _context.prev = 50;
                _context.t1 = _context["catch"](39);
                _didIteratorError3 = true;
                _iteratorError3 = _context.t1;

              case 54:
                _context.prev = 54;
                _context.prev = 55;

                if (!_iteratorNormalCompletion3 && _iterator3.return != null) {
                  _iterator3.return();
                }

              case 57:
                _context.prev = 57;

                if (!_didIteratorError3) {
                  _context.next = 60;
                  break;
                }

                throw _iteratorError3;

              case 60:
                return _context.finish(57);

              case 61:
                return _context.finish(54);

              case 62:
              case "end":
                return _context.stop();
            }
          }
        }, _callee, this, [[10, 21, 25, 33], [26,, 28, 32], [39, 50, 54, 62], [55,, 57, 61]]);
      }));

      return function perform(_x, _x2) {
        return _perform.apply(this, arguments);
      };
    }()
  }, {
    key: "onStart",
    value: function onStart(arg) {
      this._onStartCbs.push(arg);

      return this;
    }
  }, {
    key: "onFinish",
    value: function onFinish(arg) {
      this._onFinishCbs.push(arg);

      return this;
    }
  }, {
    key: "toJSON",
    value: function toJSON() {
      return {
        name: this.name(),
        bundle: this.bundle(),
        parent: (this._parent || {}).canonicalName,
        depth: this.depth,
        isLeaf: this.isLeaf,
        canonicalName: this.canonicalName,
        label: this.label(),
        subTasks: this.subTasks.map(function (it) {
          return it.toJSON();
        }),
        dependsUpon: this.getDependsUpon().map(function (it) {
          return it.canonicalName;
        }),
        expectedToStartAt: this.expectedToStartAt,
        startAt: this.startAt(),
        startArg: this.startArg(),
        expectedTimeSpan: this.expectedTimeSpan(),
        duration: this.expectedTimeSpan(),
        finishAt: this.finishAt(),
        finishArg: this.finishArg(),
        expectedToFinishAt: this.expectedToFinishAt,
        description: this.description(),
        ops: this.ops,
        nextOp: this.nextOp,
        level: this.level
      };
    }
  }, {
    key: "fromJSON",
    value: function fromJSON(arg) {
      var _this = this;

      var _arr = ['name', 'label', 'startAt', 'startArg', 'expectedTimeSpan', 'finishAt', 'finishArg', 'description', 'bundle'];

      for (var _i = 0; _i < _arr.length; _i++) {
        var k = _arr[_i];
        arg[k] !== void 0 && this[k](arg[k]);
      }

      arg.subTasks && arg.subTasks.length && arg.subTasks.forEach(function (it) {
        return _this.addSubTask(function (task) {
          return task.fromJSON(it);
        });
      });
      arg.dependsUpon && arg.dependsUpon.length && this.dependsUpon.apply(this, _toConsumableArray(arg.dependsUpon));
      return this;
    }
  }, {
    key: "level",
    get: function get() {
      return this._level;
    }
  }, {
    key: "isLeaf",
    get: function get() {
      return lib(this._subTasks);
    }
  }, {
    key: "root",
    get: function get() {
      return this._parent ? this._parent.root : this;
    }
  }, {
    key: "canonicalName",
    get: function get() {
      return (this._parent ? this._parent.canonicalName : []).concat(this._name);
    }
  }, {
    key: "subTasks",
    get: function get() {
      return this._subTasks;
    }
  }, {
    key: "expectedToStartAt",
    get: function get() {
      if (this.isLeaf) {
        var startAt = this.startAt();

        if (startAt) {
          return startAt;
        }

        var dependsUpon = this.getDependsUpon();

        if (lib(dependsUpon)) {
          return this.root.base();
        }

        return Math.max.apply(Math, _toConsumableArray(this.getDependsUpon().map(function (it) {
          return it.expectedToFinishAt;
        })));
      }

      return Math.max.apply(Math, _toConsumableArray(this.subTasks.map(function (it) {
        return it.expectedToStartAt;
      })));
    }
  }, {
    key: "expectedToFinishAt",
    get: function get() {
      if (this.isLeaf) {
        return this._finishAt || (this.startAt() || this.expectedToStartAt) + this._expectedTimeSpan;
      }

      return Math.max.apply(null, this._subTasks.map(function (it) {
        return it.expectedToFinishAt;
      }));
    }
  }, {
    key: "ops",
    get: function get() {
      if (!this.isLeaf || !this.getDependsUpon().every(function (it) {
        return it._finishAt;
      }) || this._finishAt) {
        return [];
      }

      var ret = [Task.OP_START, Task.OP_FINISH];

      if (this._startAt) {
        ret = ret.slice(1);
      }

      if (this._opsFilter) {
        ret = this._opsFilter(ret);
      }

      return ret;
    }
  }, {
    key: "depth",
    get: function get() {
      if (this.isLeaf) {
        return 1;
      }

      return Math.max.apply(Math, _toConsumableArray(this._subTasks.map(function (it) {
        return it.depth;
      }))) + 1;
    }
  }, {
    key: "nextOp",
    get: function get() {
      return (this.ops || [])[0];
    }
  }]);

  return Task;
}();

Task.OP_START = 'start';
Task.OP_FINISH = 'finish';

function _clearTask(json, fields) {
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = fields[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var it = _step.value;
      delete json[it];
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return != null) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  var _iteratorNormalCompletion2 = true;
  var _didIteratorError2 = false;
  var _iteratorError2 = undefined;

  try {
    for (var _iterator2 = json.subTasks[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
      var t = _step2.value;

      _clearTask(t, fields);
    }
  } catch (err) {
    _didIteratorError2 = true;
    _iteratorError2 = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
        _iterator2.return();
      }
    } finally {
      if (_didIteratorError2) {
        throw _iteratorError2;
      }
    }
  }
}

var Project =
/*#__PURE__*/
function (_Task) {
  _inherits(Project, _Task);

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

    return _possibleConstructorReturn(this, _getPrototypeOf(Project).apply(this, arguments));
  }

  _createClass(Project, [{
    key: "toJSON",
    value: function toJSON() {
      return Object.assign(_get(_getPrototypeOf(Project.prototype), "toJSON", this).call(this), {
        base: this.base()
      });
    }
  }, {
    key: "fromJSON",
    value: function fromJSON(arg) {
      _get(_getPrototypeOf(Project.prototype), "fromJSON", this).call(this, arg);

      this.base(arg.base);
      return this;
    }
  }, {
    key: "canonicalName",
    get: function get$$1() {
      return [];
    }
  }, {
    key: "baseline",
    get: function get$$1() {
      var json = this.toJSON();

      _clearTask(json, ['startAt', 'startArg', 'finishAt', 'finishArg']);

      return new Project().fromJSON(json);
    }
  }]);

  return Project;
}(Task);

function project(name) {
  return new Project(name);
}

exports.project = project;
exports.Project = Project;
exports.Task = Task;