vis-network/peer/esm/vis-network.js

A dynamic, browser-based visualization library.

/**
 * vis-network
 * https://visjs.github.io/vis-network/
 *
 * A dynamic, browser-based visualization library.
 *
 * @version 9.1.0
 * @date    2021-08-29T08:43:14.666Z
 *
 * @copyright (c) 2011-2017 Almende B.V, http://almende.com
 * @copyright (c) 2017-2019 visjs contributors, https://github.com/visjs
 *
 * @license
 * vis.js is dual licensed under both
 *
 *   1. The Apache 2.0 License
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *   and
 *
 *   2. The MIT License
 *      http://opensource.org/licenses/MIT
 *
 * vis.js may be distributed under either license.
 */

import { isDataViewLike, DataSet } from 'vis-data/peer/esm/vis-data.js';

var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

var check = function (it) {
  return it && it.Math == Math && it;
}; // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028


var global$k = // eslint-disable-next-line es/no-global-this -- safe
check(typeof globalThis == 'object' && globalThis) || check(typeof window == 'object' && window) || // eslint-disable-next-line no-restricted-globals -- safe
check(typeof self == 'object' && self) || check(typeof commonjsGlobal == 'object' && commonjsGlobal) || // eslint-disable-next-line no-new-func -- fallback
function () {
  return this;
}() || Function('return this')();

var objectGetOwnPropertyDescriptor = {};

var fails$m = function (exec) {
  try {
    return !!exec();
  } catch (error) {
    return true;
  }
};

var fails$l = fails$m; // Detect IE8's incomplete defineProperty implementation

var descriptors = !fails$l(function () {
  // eslint-disable-next-line es/no-object-defineproperty -- required for testing
  return Object.defineProperty({}, 1, {
    get: function () {
      return 7;
    }
  })[1] != 7;
});

var objectPropertyIsEnumerable = {};

var $propertyIsEnumerable$1 = {}.propertyIsEnumerable; // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe

var getOwnPropertyDescriptor$7 = Object.getOwnPropertyDescriptor; // Nashorn ~ JDK8 bug

var NASHORN_BUG = getOwnPropertyDescriptor$7 && !$propertyIsEnumerable$1.call({
  1: 2
}, 1); // `Object.prototype.propertyIsEnumerable` method implementation
// https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable

objectPropertyIsEnumerable.f = NASHORN_BUG ? function propertyIsEnumerable(V) {
  var descriptor = getOwnPropertyDescriptor$7(this, V);
  return !!descriptor && descriptor.enumerable;
} : $propertyIsEnumerable$1;

var createPropertyDescriptor$5 = function (bitmap, value) {
  return {
    enumerable: !(bitmap & 1),
    configurable: !(bitmap & 2),
    writable: !(bitmap & 4),
    value: value
  };
};

var toString$a = {}.toString;

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

var fails$k = fails$m;
var classof$9 = classofRaw$1;
var split = ''.split; // fallback for non-array-like ES3 and non-enumerable old V8 strings

var indexedObject = fails$k(function () {
  // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
  // eslint-disable-next-line no-prototype-builtins -- safe
  return !Object('z').propertyIsEnumerable(0);
}) ? function (it) {
  return classof$9(it) == 'String' ? split.call(it, '') : Object(it);
} : Object;

// https://tc39.es/ecma262/#sec-requireobjectcoercible

var requireObjectCoercible$5 = function (it) {
  if (it == undefined) throw TypeError("Can't call method on " + it);
  return it;
};

var IndexedObject$3 = indexedObject;
var requireObjectCoercible$4 = requireObjectCoercible$5;

var toIndexedObject$a = function (it) {
  return IndexedObject$3(requireObjectCoercible$4(it));
};

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

var path$x = {};

var path$w = path$x;
var global$j = global$k;

var aFunction$6 = function (variable) {
  return typeof variable == 'function' ? variable : undefined;
};

var getBuiltIn$8 = function (namespace, method) {
  return arguments.length < 2 ? aFunction$6(path$w[namespace]) || aFunction$6(global$j[namespace]) : path$w[namespace] && path$w[namespace][method] || global$j[namespace] && global$j[namespace][method];
};

var getBuiltIn$7 = getBuiltIn$8;
var engineUserAgent = getBuiltIn$7('navigator', 'userAgent') || '';

var global$i = global$k;
var userAgent$3 = engineUserAgent;
var process = global$i.process;
var Deno = global$i.Deno;
var versions = process && process.versions || Deno && Deno.version;
var v8 = versions && versions.v8;
var match, version;

if (v8) {
  match = v8.split('.');
  version = match[0] < 4 ? 1 : match[0] + match[1];
} else if (userAgent$3) {
  match = userAgent$3.match(/Edge\/(\d+)/);

  if (!match || match[1] >= 74) {
    match = userAgent$3.match(/Chrome\/(\d+)/);
    if (match) version = match[1];
  }
}

var engineV8Version = version && +version;

/* eslint-disable es/no-symbol -- required for testing */
var V8_VERSION$2 = engineV8Version;
var fails$j = fails$m; // eslint-disable-next-line es/no-object-getownpropertysymbols -- required for testing

var nativeSymbol = !!Object.getOwnPropertySymbols && !fails$j(function () {
  var symbol = Symbol(); // Chrome 38 Symbol has incorrect toString conversion
  // `get-own-property-symbols` polyfill symbols converted to object are not Symbol instances

  return !String(symbol) || !(Object(symbol) instanceof Symbol) || // Chrome 38-40 symbols are not inherited from DOM collections prototypes to instances
  !Symbol.sham && V8_VERSION$2 && V8_VERSION$2 < 41;
});

/* eslint-disable es/no-symbol -- required for testing */
var NATIVE_SYMBOL$2 = nativeSymbol;
var useSymbolAsUid = NATIVE_SYMBOL$2 && !Symbol.sham && typeof Symbol.iterator == 'symbol';

var getBuiltIn$6 = getBuiltIn$8;
var USE_SYMBOL_AS_UID$1 = useSymbolAsUid;
var isSymbol$4 = USE_SYMBOL_AS_UID$1 ? function (it) {
  return typeof it == 'symbol';
} : function (it) {
  var $Symbol = getBuiltIn$6('Symbol');
  return typeof $Symbol == 'function' && Object(it) instanceof $Symbol;
};

var isObject$i = isObject$j; // `OrdinaryToPrimitive` abstract operation
// https://tc39.es/ecma262/#sec-ordinarytoprimitive

var ordinaryToPrimitive$1 = function (input, pref) {
  var fn, val;
  if (pref === 'string' && typeof (fn = input.toString) == 'function' && !isObject$i(val = fn.call(input))) return val;
  if (typeof (fn = input.valueOf) == 'function' && !isObject$i(val = fn.call(input))) return val;
  if (pref !== 'string' && typeof (fn = input.toString) == 'function' && !isObject$i(val = fn.call(input))) return val;
  throw TypeError("Can't convert object to primitive value");
};

var shared$4 = {exports: {}};

var global$h = global$k;

var setGlobal$1 = function (key, value) {
  try {
    // eslint-disable-next-line es/no-object-defineproperty -- safe
    Object.defineProperty(global$h, key, {
      value: value,
      configurable: true,
      writable: true
    });
  } catch (error) {
    global$h[key] = value;
  }

  return value;
};

var global$g = global$k;
var setGlobal = setGlobal$1;
var SHARED = '__core-js_shared__';
var store$3 = global$g[SHARED] || setGlobal(SHARED, {});
var sharedStore = store$3;

var store$2 = sharedStore;
(shared$4.exports = function (key, value) {
  return store$2[key] || (store$2[key] = value !== undefined ? value : {});
})('versions', []).push({
  version: '3.16.1',
  mode: 'pure' ,
  copyright: '© 2021 Denis Pushkarev (zloirock.ru)'
});

var requireObjectCoercible$3 = requireObjectCoercible$5; // `ToObject` abstract operation
// https://tc39.es/ecma262/#sec-toobject

var toObject$d = function (argument) {
  return Object(requireObjectCoercible$3(argument));
};

var toObject$c = toObject$d;
var hasOwnProperty = {}.hasOwnProperty;

var has$c = Object.hasOwn || function hasOwn(it, key) {
  return hasOwnProperty.call(toObject$c(it), key);
};

var id$2 = 0;
var postfix = Math.random();

var uid$4 = function (key) {
  return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id$2 + postfix).toString(36);
};

var global$f = global$k;
var shared$3 = shared$4.exports;
var has$b = has$c;
var uid$3 = uid$4;
var NATIVE_SYMBOL$1 = nativeSymbol;
var USE_SYMBOL_AS_UID = useSymbolAsUid;
var WellKnownSymbolsStore$1 = shared$3('wks');
var Symbol$1 = global$f.Symbol;
var createWellKnownSymbol = USE_SYMBOL_AS_UID ? Symbol$1 : Symbol$1 && Symbol$1.withoutSetter || uid$3;

var wellKnownSymbol$j = function (name) {
  if (!has$b(WellKnownSymbolsStore$1, name) || !(NATIVE_SYMBOL$1 || typeof WellKnownSymbolsStore$1[name] == 'string')) {
    if (NATIVE_SYMBOL$1 && has$b(Symbol$1, name)) {
      WellKnownSymbolsStore$1[name] = Symbol$1[name];
    } else {
      WellKnownSymbolsStore$1[name] = createWellKnownSymbol('Symbol.' + name);
    }
  }

  return WellKnownSymbolsStore$1[name];
};

var isObject$h = isObject$j;
var isSymbol$3 = isSymbol$4;
var ordinaryToPrimitive = ordinaryToPrimitive$1;
var wellKnownSymbol$i = wellKnownSymbol$j;
var TO_PRIMITIVE$1 = wellKnownSymbol$i('toPrimitive'); // `ToPrimitive` abstract operation
// https://tc39.es/ecma262/#sec-toprimitive

var toPrimitive$1 = function (input, pref) {
  if (!isObject$h(input) || isSymbol$3(input)) return input;
  var exoticToPrim = input[TO_PRIMITIVE$1];
  var result;

  if (exoticToPrim !== undefined) {
    if (pref === undefined) pref = 'default';
    result = exoticToPrim.call(input, pref);
    if (!isObject$h(result) || isSymbol$3(result)) return result;
    throw TypeError("Can't convert object to primitive value");
  }

  if (pref === undefined) pref = 'number';
  return ordinaryToPrimitive(input, pref);
};

var toPrimitive = toPrimitive$1;
var isSymbol$2 = isSymbol$4; // `ToPropertyKey` abstract operation
// https://tc39.es/ecma262/#sec-topropertykey

var toPropertyKey$4 = function (argument) {
  var key = toPrimitive(argument, 'string');
  return isSymbol$2(key) ? key : String(key);
};

var global$e = global$k;
var isObject$g = isObject$j;
var document$1 = global$e.document; // typeof document.createElement is 'object' in old IE

var EXISTS = isObject$g(document$1) && isObject$g(document$1.createElement);

var documentCreateElement$1 = function (it) {
  return EXISTS ? document$1.createElement(it) : {};
};

var DESCRIPTORS$f = descriptors;
var fails$i = fails$m;
var createElement = documentCreateElement$1; // Thank's IE8 for his funny defineProperty

var ie8DomDefine = !DESCRIPTORS$f && !fails$i(function () {
  // eslint-disable-next-line es/no-object-defineproperty -- requied for testing
  return Object.defineProperty(createElement('div'), 'a', {
    get: function () {
      return 7;
    }
  }).a != 7;
});

var DESCRIPTORS$e = descriptors;
var propertyIsEnumerableModule$2 = objectPropertyIsEnumerable;
var createPropertyDescriptor$4 = createPropertyDescriptor$5;
var toIndexedObject$9 = toIndexedObject$a;
var toPropertyKey$3 = toPropertyKey$4;
var has$a = has$c;
var IE8_DOM_DEFINE$1 = ie8DomDefine; // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe

var $getOwnPropertyDescriptor$1 = Object.getOwnPropertyDescriptor; // `Object.getOwnPropertyDescriptor` method
// https://tc39.es/ecma262/#sec-object.getownpropertydescriptor

objectGetOwnPropertyDescriptor.f = DESCRIPTORS$e ? $getOwnPropertyDescriptor$1 : function getOwnPropertyDescriptor(O, P) {
  O = toIndexedObject$9(O);
  P = toPropertyKey$3(P);
  if (IE8_DOM_DEFINE$1) try {
    return $getOwnPropertyDescriptor$1(O, P);
  } catch (error) {
    /* empty */
  }
  if (has$a(O, P)) return createPropertyDescriptor$4(!propertyIsEnumerableModule$2.f.call(O, P), O[P]);
};

var fails$h = fails$m;
var replacement = /#|\.prototype\./;

var isForced$1 = function (feature, detection) {
  var value = data[normalize(feature)];
  return value == POLYFILL ? true : value == NATIVE ? false : typeof detection == 'function' ? fails$h(detection) : !!detection;
};

var normalize = isForced$1.normalize = function (string) {
  return String(string).replace(replacement, '.').toLowerCase();
};

var data = isForced$1.data = {};
var NATIVE = isForced$1.NATIVE = 'N';
var POLYFILL = isForced$1.POLYFILL = 'P';
var isForced_1 = isForced$1;

var aFunction$5 = function (it) {
  if (typeof it != 'function') {
    throw TypeError(String(it) + ' is not a function');
  }

  return it;
};

var aFunction$4 = aFunction$5; // optional / simple context binding

var functionBindContext = function (fn, that, length) {
  aFunction$4(fn);
  if (that === undefined) return fn;

  switch (length) {
    case 0:
      return function () {
        return fn.call(that);
      };

    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 () {
    return fn.apply(that, arguments);
  };
};

var objectDefineProperty = {};

var isObject$f = isObject$j;

var anObject$c = function (it) {
  if (!isObject$f(it)) {
    throw TypeError(String(it) + ' is not an object');
  }

  return it;
};

var DESCRIPTORS$d = descriptors;
var IE8_DOM_DEFINE = ie8DomDefine;
var anObject$b = anObject$c;
var toPropertyKey$2 = toPropertyKey$4; // eslint-disable-next-line es/no-object-defineproperty -- safe

var $defineProperty$1 = Object.defineProperty; // `Object.defineProperty` method
// https://tc39.es/ecma262/#sec-object.defineproperty

objectDefineProperty.f = DESCRIPTORS$d ? $defineProperty$1 : function defineProperty(O, P, Attributes) {
  anObject$b(O);
  P = toPropertyKey$2(P);
  anObject$b(Attributes);
  if (IE8_DOM_DEFINE) try {
    return $defineProperty$1(O, P, Attributes);
  } catch (error) {
    /* empty */
  }
  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
  if ('value' in Attributes) O[P] = Attributes.value;
  return O;
};

var DESCRIPTORS$c = descriptors;
var definePropertyModule$4 = objectDefineProperty;
var createPropertyDescriptor$3 = createPropertyDescriptor$5;
var createNonEnumerableProperty$9 = DESCRIPTORS$c ? function (object, key, value) {
  return definePropertyModule$4.f(object, key, createPropertyDescriptor$3(1, value));
} : function (object, key, value) {
  object[key] = value;
  return object;
};

var global$d = global$k;
var getOwnPropertyDescriptor$6 = objectGetOwnPropertyDescriptor.f;
var isForced = isForced_1;
var path$v = path$x;
var bind$a = functionBindContext;
var createNonEnumerableProperty$8 = createNonEnumerableProperty$9;
var has$9 = has$c;

var wrapConstructor = function (NativeConstructor) {
  var Wrapper = function (a, b, c) {
    if (this instanceof NativeConstructor) {
      switch (arguments.length) {
        case 0:
          return new NativeConstructor();

        case 1:
          return new NativeConstructor(a);

        case 2:
          return new NativeConstructor(a, b);
      }

      return new NativeConstructor(a, b, c);
    }

    return NativeConstructor.apply(this, arguments);
  };

  Wrapper.prototype = NativeConstructor.prototype;
  return Wrapper;
};
/*
  options.target      - name of the target object
  options.global      - target is the global object
  options.stat        - export as static methods of target
  options.proto       - export as prototype methods of target
  options.real        - real prototype method for the `pure` version
  options.forced      - export even if the native feature is available
  options.bind        - bind methods to the target, required for the `pure` version
  options.wrap        - wrap constructors to preventing global pollution, required for the `pure` version
  options.unsafe      - use the simple assignment of property instead of delete + defineProperty
  options.sham        - add a flag to not completely full polyfills
  options.enumerable  - export as enumerable property
  options.noTargetGet - prevent calling a getter on target
*/


var _export = function (options, source) {
  var TARGET = options.target;
  var GLOBAL = options.global;
  var STATIC = options.stat;
  var PROTO = options.proto;
  var nativeSource = GLOBAL ? global$d : STATIC ? global$d[TARGET] : (global$d[TARGET] || {}).prototype;
  var target = GLOBAL ? path$v : path$v[TARGET] || (path$v[TARGET] = {});
  var targetPrototype = target.prototype;
  var FORCED, USE_NATIVE, VIRTUAL_PROTOTYPE;
  var key, sourceProperty, targetProperty, nativeProperty, resultProperty, descriptor;

  for (key in source) {
    FORCED = isForced(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced); // contains in native

    USE_NATIVE = !FORCED && nativeSource && has$9(nativeSource, key);
    targetProperty = target[key];
    if (USE_NATIVE) if (options.noTargetGet) {
      descriptor = getOwnPropertyDescriptor$6(nativeSource, key);
      nativeProperty = descriptor && descriptor.value;
    } else nativeProperty = nativeSource[key]; // export native or implementation

    sourceProperty = USE_NATIVE && nativeProperty ? nativeProperty : source[key];
    if (USE_NATIVE && typeof targetProperty === typeof sourceProperty) continue; // bind timers to global for call from export context

    if (options.bind && USE_NATIVE) resultProperty = bind$a(sourceProperty, global$d); // wrap global constructors for prevent changs in this version
    else if (options.wrap && USE_NATIVE) resultProperty = wrapConstructor(sourceProperty); // make static versions for prototype methods
    else if (PROTO && typeof sourceProperty == 'function') resultProperty = bind$a(Function.call, sourceProperty); // default case
    else resultProperty = sourceProperty; // add a flag to not completely full polyfills

    if (options.sham || sourceProperty && sourceProperty.sham || targetProperty && targetProperty.sham) {
      createNonEnumerableProperty$8(resultProperty, 'sham', true);
    }

    target[key] = resultProperty;

    if (PROTO) {
      VIRTUAL_PROTOTYPE = TARGET + 'Prototype';

      if (!has$9(path$v, VIRTUAL_PROTOTYPE)) {
        createNonEnumerableProperty$8(path$v, VIRTUAL_PROTOTYPE, {});
      } // export virtual prototype methods


      path$v[VIRTUAL_PROTOTYPE][key] = sourceProperty; // export real prototype methods

      if (options.real && targetPrototype && !targetPrototype[key]) {
        createNonEnumerableProperty$8(targetPrototype, key, sourceProperty);
      }
    }
  }
};

var ceil = Math.ceil;
var floor$1 = Math.floor; // `ToInteger` abstract operation
// https://tc39.es/ecma262/#sec-tointeger

var toInteger$4 = function (argument) {
  return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor$1 : ceil)(argument);
};

var toInteger$3 = toInteger$4;
var min$2 = Math.min; // `ToLength` abstract operation
// https://tc39.es/ecma262/#sec-tolength

var toLength$a = function (argument) {
  return argument > 0 ? min$2(toInteger$3(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
};

var toInteger$2 = toInteger$4;
var max$2 = Math.max;
var min$1 = Math.min; // Helper for a popular repeating case of the spec:
// Let integer be ? ToInteger(index).
// If integer < 0, let result be max((length + integer), 0); else let result be min(integer, length).

var toAbsoluteIndex$4 = function (index, length) {
  var integer = toInteger$2(index);
  return integer < 0 ? max$2(integer + length, 0) : min$1(integer, length);
};

var toIndexedObject$8 = toIndexedObject$a;
var toLength$9 = toLength$a;
var toAbsoluteIndex$3 = toAbsoluteIndex$4; // `Array.prototype.{ indexOf, includes }` methods implementation

var createMethod$5 = function (IS_INCLUDES) {
  return function ($this, el, fromIndex) {
    var O = toIndexedObject$8($this);
    var length = toLength$9(O.length);
    var index = toAbsoluteIndex$3(fromIndex, length);
    var value; // Array#includes uses SameValueZero equality algorithm
    // eslint-disable-next-line no-self-compare -- NaN check

    if (IS_INCLUDES && el != el) while (length > index) {
      value = O[index++]; // eslint-disable-next-line no-self-compare -- NaN check

      if (value != value) return true; // Array#indexOf ignores holes, Array#includes - not
    } else for (; length > index; index++) {
      if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;
    }
    return !IS_INCLUDES && -1;
  };
};

var arrayIncludes$1 = {
  // `Array.prototype.includes` method
  // https://tc39.es/ecma262/#sec-array.prototype.includes
  includes: createMethod$5(true),
  // `Array.prototype.indexOf` method
  // https://tc39.es/ecma262/#sec-array.prototype.indexof
  indexOf: createMethod$5(false)
};

var hiddenKeys$6 = {};

var has$8 = has$c;
var toIndexedObject$7 = toIndexedObject$a;
var indexOf$4 = arrayIncludes$1.indexOf;
var hiddenKeys$5 = hiddenKeys$6;

var objectKeysInternal = function (object, names) {
  var O = toIndexedObject$7(object);
  var i = 0;
  var result = [];
  var key;

  for (key in O) !has$8(hiddenKeys$5, key) && has$8(O, key) && result.push(key); // Don't enum bug & hidden keys


  while (names.length > i) if (has$8(O, key = names[i++])) {
    ~indexOf$4(result, key) || result.push(key);
  }

  return result;
};

var enumBugKeys$3 = ['constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf'];

var internalObjectKeys$1 = objectKeysInternal;
var enumBugKeys$2 = enumBugKeys$3; // `Object.keys` method
// https://tc39.es/ecma262/#sec-object.keys
// eslint-disable-next-line es/no-object-keys -- safe

var objectKeys$4 = Object.keys || function keys(O) {
  return internalObjectKeys$1(O, enumBugKeys$2);
};

var objectGetOwnPropertySymbols = {};

objectGetOwnPropertySymbols.f = Object.getOwnPropertySymbols;

var DESCRIPTORS$b = descriptors;
var fails$g = fails$m;
var objectKeys$3 = objectKeys$4;
var getOwnPropertySymbolsModule$2 = objectGetOwnPropertySymbols;
var propertyIsEnumerableModule$1 = objectPropertyIsEnumerable;
var toObject$b = toObject$d;
var IndexedObject$2 = indexedObject; // eslint-disable-next-line es/no-object-assign -- safe

var $assign = Object.assign; // eslint-disable-next-line es/no-object-defineproperty -- required for testing

var defineProperty$b = Object.defineProperty; // `Object.assign` method
// https://tc39.es/ecma262/#sec-object.assign

var objectAssign = !$assign || fails$g(function () {
  // should have correct order of operations (Edge bug)
  if (DESCRIPTORS$b && $assign({
    b: 1
  }, $assign(defineProperty$b({}, 'a', {
    enumerable: true,
    get: function () {
      defineProperty$b(this, 'b', {
        value: 3,
        enumerable: false
      });
    }
  }), {
    b: 2
  })).b !== 1) return true; // should work with symbols and should have deterministic property order (V8 bug)

  var A = {};
  var B = {}; // eslint-disable-next-line es/no-symbol -- safe

  var symbol = Symbol();
  var alphabet = 'abcdefghijklmnopqrst';
  A[symbol] = 7;
  alphabet.split('').forEach(function (chr) {
    B[chr] = chr;
  });
  return $assign({}, A)[symbol] != 7 || objectKeys$3($assign({}, B)).join('') != alphabet;
}) ? function assign(target, source) {
  // eslint-disable-line no-unused-vars -- required for `.length`
  var T = toObject$b(target);
  var argumentsLength = arguments.length;
  var index = 1;
  var getOwnPropertySymbols = getOwnPropertySymbolsModule$2.f;
  var propertyIsEnumerable = propertyIsEnumerableModule$1.f;

  while (argumentsLength > index) {
    var S = IndexedObject$2(arguments[index++]);
    var keys = getOwnPropertySymbols ? objectKeys$3(S).concat(getOwnPropertySymbols(S)) : objectKeys$3(S);
    var length = keys.length;
    var j = 0;
    var key;

    while (length > j) {
      key = keys[j++];
      if (!DESCRIPTORS$b || propertyIsEnumerable.call(S, key)) T[key] = S[key];
    }
  }

  return T;
} : $assign;

var $$I = _export;
var assign$5 = objectAssign; // `Object.assign` method
// https://tc39.es/ecma262/#sec-object.assign
// eslint-disable-next-line es/no-object-assign -- required for testing

$$I({
  target: 'Object',
  stat: true,
  forced: Object.assign !== assign$5
}, {
  assign: assign$5
});

var path$u = path$x;
var assign$4 = path$u.Object.assign;

var parent$T = assign$4;
var assign$3 = parent$T;

var assign$2 = assign$3;

var aFunction$3 = aFunction$5;
var isObject$e = isObject$j;
var slice$7 = [].slice;
var factories = {};

var construct$3 = function (C, argsLength, args) {
  if (!(argsLength in factories)) {
    for (var list = [], i = 0; i < argsLength; i++) list[i] = 'a[' + i + ']'; // eslint-disable-next-line no-new-func -- we have no proper alternatives, IE8- only


    factories[argsLength] = Function('C,a', 'return new C(' + list.join(',') + ')');
  }

  return factories[argsLength](C, args);
}; // `Function.prototype.bind` method implementation
// https://tc39.es/ecma262/#sec-function.prototype.bind


var functionBind = Function.bind || function bind(that
/* , ...args */
) {
  var fn = aFunction$3(this);
  var partArgs = slice$7.call(arguments, 1);

  var boundFunction = function bound() {
    var args = partArgs.concat(slice$7.call(arguments));
    return this instanceof boundFunction ? construct$3(fn, args.length, args) : fn.apply(that, args);
  };

  if (isObject$e(fn.prototype)) boundFunction.prototype = fn.prototype;
  return boundFunction;
};

var $$H = _export;
var bind$9 = functionBind; // `Function.prototype.bind` method
// https://tc39.es/ecma262/#sec-function.prototype.bind

$$H({
  target: 'Function',
  proto: true
}, {
  bind: bind$9
});

var path$t = path$x;

var entryVirtual$i = function (CONSTRUCTOR) {
  return path$t[CONSTRUCTOR + 'Prototype'];
};

var entryVirtual$h = entryVirtual$i;
var bind$8 = entryVirtual$h('Function').bind;

var bind$7 = bind$8;
var FunctionPrototype = Function.prototype;

var bind_1 = function (it) {
  var own = it.bind;
  return it === FunctionPrototype || it instanceof Function && own === FunctionPrototype.bind ? bind$7 : own;
};

var parent$S = bind_1;
var bind$6 = parent$S;

var bind$5 = bind$6;

/**
 * Draw a circle.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param r - The radius of the circle.
 */
function drawCircle(ctx, x, y, r) {
  ctx.beginPath();
  ctx.arc(x, y, r, 0, 2 * Math.PI, false);
  ctx.closePath();
}
/**
 * Draw a square.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param r - Half of the width and height of the square.
 */

function drawSquare(ctx, x, y, r) {
  ctx.beginPath();
  ctx.rect(x - r, y - r, r * 2, r * 2);
  ctx.closePath();
}
/**
 * Draw an equilateral triangle standing on a side.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param r - Half of the length of the sides.
 *
 * @remarks
 * http://en.wikipedia.org/wiki/Equilateral_triangle
 */

function drawTriangle(ctx, x, y, r) {
  ctx.beginPath(); // the change in radius and the offset is here to center the shape

  r *= 1.15;
  y += 0.275 * r;
  var s = r * 2;
  var s2 = s / 2;
  var ir = Math.sqrt(3) / 6 * s; // radius of inner circle

  var h = Math.sqrt(s * s - s2 * s2); // height

  ctx.moveTo(x, y - (h - ir));
  ctx.lineTo(x + s2, y + ir);
  ctx.lineTo(x - s2, y + ir);
  ctx.lineTo(x, y - (h - ir));
  ctx.closePath();
}
/**
 * Draw an equilateral triangle standing on a vertex.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param r - Half of the length of the sides.
 *
 * @remarks
 * http://en.wikipedia.org/wiki/Equilateral_triangle
 */

function drawTriangleDown(ctx, x, y, r) {
  ctx.beginPath(); // the change in radius and the offset is here to center the shape

  r *= 1.15;
  y -= 0.275 * r;
  var s = r * 2;
  var s2 = s / 2;
  var ir = Math.sqrt(3) / 6 * s; // radius of inner circle

  var h = Math.sqrt(s * s - s2 * s2); // height

  ctx.moveTo(x, y + (h - ir));
  ctx.lineTo(x + s2, y - ir);
  ctx.lineTo(x - s2, y - ir);
  ctx.lineTo(x, y + (h - ir));
  ctx.closePath();
}
/**
 * Draw a star.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param r - The outer radius of the star.
 */

function drawStar(ctx, x, y, r) {
  // http://www.html5canvastutorials.com/labs/html5-canvas-star-spinner/
  ctx.beginPath(); // the change in radius and the offset is here to center the shape

  r *= 0.82;
  y += 0.1 * r;

  for (var n = 0; n < 10; n++) {
    var radius = n % 2 === 0 ? r * 1.3 : r * 0.5;
    ctx.lineTo(x + radius * Math.sin(n * 2 * Math.PI / 10), y - radius * Math.cos(n * 2 * Math.PI / 10));
  }

  ctx.closePath();
}
/**
 * Draw a diamond.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param r - Half of the width and height of the diamond.
 *
 * @remarks
 * http://www.html5canvastutorials.com/labs/html5-canvas-star-spinner/
 */

function drawDiamond(ctx, x, y, r) {
  ctx.beginPath();
  ctx.lineTo(x, y + r);
  ctx.lineTo(x + r, y);
  ctx.lineTo(x, y - r);
  ctx.lineTo(x - r, y);
  ctx.closePath();
}
/**
 * Draw a rectangle with rounded corners.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param w - The width of the rectangle.
 * @param h - The height of the rectangle.
 * @param r - The radius of the corners.
 *
 * @remarks
 * http://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-on-html-canvas
 */

function drawRoundRect(ctx, x, y, w, h, r) {
  var r2d = Math.PI / 180;

  if (w - 2 * r < 0) {
    r = w / 2;
  } //ensure that the radius isn't too large for x


  if (h - 2 * r < 0) {
    r = h / 2;
  } //ensure that the radius isn't too large for y


  ctx.beginPath();
  ctx.moveTo(x + r, y);
  ctx.lineTo(x + w - r, y);
  ctx.arc(x + w - r, y + r, r, r2d * 270, r2d * 360, false);
  ctx.lineTo(x + w, y + h - r);
  ctx.arc(x + w - r, y + h - r, r, 0, r2d * 90, false);
  ctx.lineTo(x + r, y + h);
  ctx.arc(x + r, y + h - r, r, r2d * 90, r2d * 180, false);
  ctx.lineTo(x, y + r);
  ctx.arc(x + r, y + r, r, r2d * 180, r2d * 270, false);
  ctx.closePath();
}
/**
 * Draw an ellipse.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param w - The width of the ellipse.
 * @param h - The height of the ellipse.
 *
 * @remarks
 * http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas
 *
 * Postfix '_vis' added to discern it from standard method ellipse().
 */

function drawEllipse(ctx, x, y, w, h) {
  var kappa = 0.5522848,
      ox = w / 2 * kappa,
      // control point offset horizontal
  oy = h / 2 * kappa,
      // control point offset vertical
  xe = x + w,
      // x-end
  ye = y + h,
      // y-end
  xm = x + w / 2,
      // x-middle
  ym = y + h / 2; // y-middle

  ctx.beginPath();
  ctx.moveTo(x, ym);
  ctx.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
  ctx.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
  ctx.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
  ctx.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
  ctx.closePath();
}
/**
 * Draw an isometric cylinder.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param w - The width of the database.
 * @param h - The height of the database.
 *
 * @remarks
 * http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas
 */

function drawDatabase(ctx, x, y, w, h) {
  var f = 1 / 3;
  var wEllipse = w;
  var hEllipse = h * f;
  var kappa = 0.5522848,
      ox = wEllipse / 2 * kappa,
      // control point offset horizontal
  oy = hEllipse / 2 * kappa,
      // control point offset vertical
  xe = x + wEllipse,
      // x-end
  ye = y + hEllipse,
      // y-end
  xm = x + wEllipse / 2,
      // x-middle
  ym = y + hEllipse / 2,
      // y-middle
  ymb = y + (h - hEllipse / 2),
      // y-midlle, bottom ellipse
  yeb = y + h; // y-end, bottom ellipse

  ctx.beginPath();
  ctx.moveTo(xe, ym);
  ctx.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye);
  ctx.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym);
  ctx.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y);
  ctx.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym);
  ctx.lineTo(xe, ymb);
  ctx.bezierCurveTo(xe, ymb + oy, xm + ox, yeb, xm, yeb);
  ctx.bezierCurveTo(xm - ox, yeb, x, ymb + oy, x, ymb);
  ctx.lineTo(x, ym);
}
/**
 * Draw a dashed line.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The start position on the x axis.
 * @param y - The start position on the y axis.
 * @param x2 - The end position on the x axis.
 * @param y2 - The end position on the y axis.
 * @param pattern - List of lengths starting with line and then alternating between space and line.
 *
 * @author David Jordan
 * @remarks
 * date 2012-08-08
 * http://stackoverflow.com/questions/4576724/dotted-stroke-in-canvas
 */

function drawDashedLine(ctx, x, y, x2, y2, pattern) {
  ctx.beginPath();
  ctx.moveTo(x, y);
  var patternLength = pattern.length;
  var dx = x2 - x;
  var dy = y2 - y;
  var slope = dy / dx;
  var distRemaining = Math.sqrt(dx * dx + dy * dy);
  var patternIndex = 0;
  var draw = true;
  var xStep = 0;
  var dashLength = +pattern[0];

  while (distRemaining >= 0.1) {
    dashLength = +pattern[patternIndex++ % patternLength];

    if (dashLength > distRemaining) {
      dashLength = distRemaining;
    }

    xStep = Math.sqrt(dashLength * dashLength / (1 + slope * slope));
    xStep = dx < 0 ? -xStep : xStep;
    x += xStep;
    y += slope * xStep;

    if (draw === true) {
      ctx.lineTo(x, y);
    } else {
      ctx.moveTo(x, y);
    }

    distRemaining -= dashLength;
    draw = !draw;
  }
}
/**
 * Draw a hexagon.
 *
 * @param ctx - The context this shape will be rendered to.
 * @param x - The position of the center on the x axis.
 * @param y - The position of the center on the y axis.
 * @param r - The radius of the hexagon.
 */

function drawHexagon(ctx, x, y, r) {
  ctx.beginPath();
  var sides = 6;
  var a = Math.PI * 2 / sides;
  ctx.moveTo(x + r, y);

  for (var i = 1; i < sides; i++) {
    ctx.lineTo(x + r * Math.cos(a * i), y + r * Math.sin(a * i));
  }

  ctx.closePath();
}
var shapeMap = {
  circle: drawCircle,
  dashedLine: drawDashedLine,
  database: drawDatabase,
  diamond: drawDiamond,
  ellipse: drawEllipse,
  ellipse_vis: drawEllipse,
  hexagon: drawHexagon,
  roundRect: drawRoundRect,
  square: drawSquare,
  star: drawStar,
  triangle: drawTriangle,
  triangleDown: drawTriangleDown
};
/**
 * Returns either custom or native drawing function base on supplied name.
 *
 * @param name - The name of the function. Either the name of a
 * CanvasRenderingContext2D property or an export from shapes.ts without the
 * draw prefix.
 *
 * @returns The function that can be used for rendering. In case of native
 * CanvasRenderingContext2D function the API is normalized to
 * `(ctx: CanvasRenderingContext2D, ...originalArgs) => void`.
 */

function getShape(name) {
  if (Object.prototype.hasOwnProperty.call(shapeMap, name)) {
    return shapeMap[name];
  } else {
    return function (ctx) {
      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
        args[_key - 1] = arguments[_key];
      }

      CanvasRenderingContext2D.prototype[name].call(ctx, args);
    };
  }
}

var componentEmitter = {exports: {}};

(function (module) {
  /**
   * Expose `Emitter`.
   */
  {
    module.exports = Emitter;
  }
  /**
   * Initialize a new `Emitter`.
   *
   * @api public
   */


  function Emitter(obj) {
    if (obj) return mixin(obj);
  }
  /**
   * Mixin the emitter properties.
   *
   * @param {Object} obj
   * @return {Object}
   * @api private
   */

  function mixin(obj) {
    for (var key in Emitter.prototype) {
      obj[key] = Emitter.prototype[key];
    }

    return obj;
  }
  /**
   * Listen on the given `event` with `fn`.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */


  Emitter.prototype.on = Emitter.prototype.addEventListener = function (event, fn) {
    this._callbacks = this._callbacks || {};
    (this._callbacks['$' + event] = this._callbacks['$' + event] || []).push(fn);
    return this;
  };
  /**
   * Adds an `event` listener that will be invoked a single
   * time then automatically removed.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */


  Emitter.prototype.once = function (event, fn) {
    function on() {
      this.off(event, on);
      fn.apply(this, arguments);
    }

    on.fn = fn;
    this.on(event, on);
    return this;
  };
  /**
   * Remove the given callback for `event` or all
   * registered callbacks.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */


  Emitter.prototype.off = Emitter.prototype.removeListener = Emitter.prototype.removeAllListeners = Emitter.prototype.removeEventListener = function (event, fn) {
    this._callbacks = this._callbacks || {}; // all

    if (0 == arguments.length) {
      this._callbacks = {};
      return this;
    } // specific event


    var callbacks = this._callbacks['$' + event];
    if (!callbacks) return this; // remove all handlers

    if (1 == arguments.length) {
      delete this._callbacks['$' + event];
      return this;
    } // remove specific handler


    var cb;

    for (var i = 0; i < callbacks.length; i++) {
      cb = callbacks[i];

      if (cb === fn || cb.fn === fn) {
        callbacks.splice(i, 1);
        break;
      }
    } // Remove event specific arrays for event types that no
    // one is subscribed for to avoid memory leak.


    if (callbacks.length === 0) {
      delete this._callbacks['$' + event];
    }

    return this;
  };
  /**
   * Emit `event` with the given args.
   *
   * @param {String} event
   * @param {Mixed} ...
   * @return {Emitter}
   */


  Emitter.prototype.emit = function (event) {
    this._callbacks = this._callbacks || {};
    var args = new Array(arguments.length - 1),
        callbacks = this._callbacks['$' + event];

    for (var i = 1; i < arguments.length; i++) {
      args[i - 1] = arguments[i];
    }

    if (callbacks) {
      callbacks = callbacks.slice(0);

      for (var i = 0, len = callbacks.length; i < len; ++i) {
        callbacks[i].apply(this, args);
      }
    }

    return this;
  };
  /**
   * Return array of callbacks for `event`.
   *
   * @param {String} event
   * @return {Array}
   * @api public
   */


  Emitter.prototype.listeners = function (event) {
    this._callbacks = this._callbacks || {};
    return this._callbacks['$' + event] || [];
  };
  /**
   * Check if this emitter has `event` handlers.
   *
   * @param {String} event
   * @return {Boolean}
   * @api public
   */


  Emitter.prototype.hasListeners = function (event) {
    return !!this.listeners(event).length;
  };
})(componentEmitter);

var Emitter = componentEmitter.exports;

var isSymbol$1 = isSymbol$4;

var toString$9 = function (argument) {
  if (isSymbol$1(argument)) throw TypeError('Cannot convert a Symbol value to a string');
  return String(argument);
};

var toInteger$1 = toInteger$4;
var toString$8 = toString$9;
var requireObjectCoercible$2 = requireObjectCoercible$5; // `String.prototype.codePointAt` methods implementation

var createMethod$4 = function (CONVERT_TO_STRING) {
  return function ($this, pos) {
    var S = toString$8(requireObjectCoercible$2($this));
    var position = toInteger$1(pos);
    var size = S.length;
    var first, second;
    if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;
    first = S.charCodeAt(position);
    return first < 0xD800 || first > 0xDBFF || position + 1 === size || (second = S.charCodeAt(position + 1)) < 0xDC00 || second > 0xDFFF ? CONVERT_TO_STRING ? S.charAt(position) : first : CONVERT_TO_STRING ? S.slice(position, position + 2) : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;
  };
};

var stringMultibyte = {
  // `String.prototype.codePointAt` method
  // https://tc39.es/ecma262/#sec-string.prototype.codepointat
  codeAt: createMethod$4(false),
  // `String.prototype.at` method
  // https://github.com/mathiasbynens/String.prototype.at
  charAt: createMethod$4(true)
};

var store$1 = sharedStore;
var functionToString = Function.toString; // this helper broken in `core-js@3.4.1-3.4.4`, so we can't use `shared` helper

if (typeof store$1.inspectSource != 'function') {
  store$1.inspectSource = function (it) {
    return functionToString.call(it);
  };
}

var inspectSource$1 = store$1.inspectSource;

var global$c = global$k;
var inspectSource = inspectSource$1;
var WeakMap$1 = global$c.WeakMap;
var nativeWeakMap = typeof WeakMap$1 === 'function' && /native code/.test(inspectSource(WeakMap$1));

var shared$2 = shared$4.exports;
var uid$2 = uid$4;
var keys$3 = shared$2('keys');

var sharedKey$4 = function (key) {
  return keys$3[key] || (keys$3[key] = uid$2(key));
};

var NATIVE_WEAK_MAP$1 = nativeWeakMap;
var global$b = global$k;
var isObject$d = isObject$j;
var createNonEnumerableProperty$7 = createNonEnumerableProperty$9;
var objectHas = has$c;
var shared$1 = sharedStore;
var sharedKey$3 = sharedKey$4;
var hiddenKeys$4 = hiddenKeys$6;
var OBJECT_ALREADY_INITIALIZED = 'Object already initialized';
var WeakMap = global$b.WeakMap;
var set$3, get$5, has$7;

var enforce = function (it) {
  return has$7(it) ? get$5(it) : set$3(it, {});
};

var getterFor = function (TYPE) {
  return function (it) {
    var state;

    if (!isObject$d(it) || (state = get$5(it)).type !== TYPE) {
      throw TypeError('Incompatible receiver, ' + TYPE + ' required');
    }

    return state;
  };
};

if (NATIVE_WEAK_MAP$1 || shared$1.state) {
  var store = shared$1.state || (shared$1.state = new WeakMap());
  var wmget = store.get;
  var wmhas = store.has;
  var wmset = store.set;

  set$3 = function (it, metadata) {
    if (wmhas.call(store, it)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);
    metadata.facade = it;
    wmset.call(store, it, metadata);
    return metadata;
  };

  get$5 = function (it) {
    return wmget.call(store, it) || {};
  };

  has$7 = function (it) {
    return wmhas.call(store, it);
  };
} else {
  var STATE = sharedKey$3('state');
  hiddenKeys$4[STATE] = true;

  set$3 = function (it, metadata) {
    if (objectHas(it, STATE)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);
    metadata.facade = it;
    createNonEnumerableProperty$7(it, STATE, metadata);
    return metadata;
  };

  get$5 = function (it) {
    return objectHas(it, STATE) ? it[STATE] : {};
  };

  has$7 = function (it) {
    return objectHas(it, STATE);
  };
}

var internalState = {
  set: set$3,
  get: get$5,
  has: has$7,
  enforce: enforce,
  getterFor: getterFor
};

var fails$f = fails$m;
var correctPrototypeGetter = !fails$f(function () {
  function F() {
    /* empty */
  }

  F.prototype.constructor = null; // eslint-disable-next-line es/no-object-getprototypeof -- required for testing

  return Object.getPrototypeOf(new F()) !== F.prototype;
});

var has$6 = has$c;
var toObject$a = toObject$d;
var sharedKey$2 = sharedKey$4;
var CORRECT_PROTOTYPE_GETTER$1 = correctPrototypeGetter;
var IE_PROTO$1 = sharedKey$2('IE_PROTO');
var ObjectPrototype$1 = Object.prototype; // `Object.getPrototypeOf` method
// https://tc39.es/ecma262/#sec-object.getprototypeof
// eslint-disable-next-line es/no-object-getprototypeof -- safe

var objectGetPrototypeOf = CORRECT_PROTOTYPE_GETTER$1 ? Object.getPrototypeOf : function (O) {
  O = toObject$a(O);
  if (has$6(O, IE_PROTO$1)) return O[IE_PROTO$1];

  if (typeof O.constructor == 'function' && O instanceof O.constructor) {
    return O.constructor.prototype;
  }

  return O instanceof Object ? ObjectPrototype$1 : null;
};

var fails$e = fails$m;
var getPrototypeOf$7 = objectGetPrototypeOf;
var createNonEnumerableProperty$6 = createNonEnumerableProperty$9;
var has$5 = has$c;
var wellKnownSymbol$h = wellKnownSymbol$j;
var ITERATOR$4 = wellKnownSymbol$h('iterator');
var BUGGY_SAFARI_ITERATORS$1 = false;

var returnThis$2 = function () {
  return this;
}; // `%IteratorPrototype%` object
// https://tc39.es/ecma262/#sec-%iteratorprototype%-object


var IteratorPrototype$2, PrototypeOfArrayIteratorPrototype, arrayIterator;
/* eslint-disable es/no-array-prototype-keys -- safe */

if ([].keys) {
  arrayIterator = [].keys(); // Safari 8 has buggy iterators w/o `next`

  if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS$1 = true;else {
    PrototypeOfArrayIteratorPrototype = getPrototypeOf$7(getPrototypeOf$7(arrayIterator));
    if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype$2 = PrototypeOfArrayIteratorPrototype;
  }
}

var NEW_ITERATOR_PROTOTYPE = IteratorPrototype$2 == undefined || fails$e(function () {
  var test = {}; // FF44- legacy iterators case

  return IteratorPrototype$2[ITERATOR$4].call(test) !== test;
});
if (NEW_ITERATOR_PROTOTYPE) IteratorPrototype$2 = {}; // `%IteratorPrototype%[@@iterator]()` method
// https://tc39.es/ecma262/#sec-%iteratorprototype%-@@iterator

if ((NEW_ITERATOR_PROTOTYPE) && !has$5(IteratorPrototype$2, ITERATOR$4)) {
  createNonEnumerableProperty$6(IteratorPrototype$2, ITERATOR$4, returnThis$2);
}

var iteratorsCore = {
  IteratorPrototype: IteratorPrototype$2,
  BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS$1
};

var DESCRIPTORS$a = descriptors;
var definePropertyModule$3 = objectDefineProperty;
var anObject$a = anObject$c;
var objectKeys$2 = objectKeys$4; // `Object.defineProperties` method
// https://tc39.es/ecma262/#sec-object.defineproperties
// eslint-disable-next-line es/no-object-defineproperties -- safe

var objectDefineProperties = DESCRIPTORS$a ? Object.defineProperties : function defineProperties(O, Properties) {
  anObject$a(O);
  var keys = objectKeys$2(Properties);
  var length = keys.length;
  var index = 0;
  var key;

  while (length > index) definePropertyModule$3.f(O, key = keys[index++], Properties[key]);

  return O;
};

var getBuiltIn$5 = getBuiltIn$8;
var html$1 = getBuiltIn$5('document', 'documentElement');

/* global ActiveXObject -- old IE, WSH */
var anObject$9 = anObject$c;
var defineProperties$5 = objectDefineProperties;
var enumBugKeys$1 = enumBugKeys$3;
var hiddenKeys$3 = hiddenKeys$6;
var html = html$1;
var documentCreateElement = documentCreateElement$1;
var sharedKey$1 = sharedKey$4;
var GT = '>';
var LT = '<';
var PROTOTYPE$1 = 'prototype';
var SCRIPT = 'script';
var IE_PROTO = sharedKey$1('IE_PROTO');

var EmptyConstructor = function () {
  /* empty */
};

var scriptTag = function (content) {
  return LT + SCRIPT + GT + content + LT + '/' + SCRIPT + GT;
}; // Create object with fake `null` prototype: use ActiveX Object with cleared prototype


var NullProtoObjectViaActiveX = function (activeXDocument) {
  activeXDocument.write(scriptTag(''));
  activeXDocument.close();
  var temp = activeXDocument.parentWindow.Object;
  activeXDocument = null; // avoid memory leak

  return temp;
}; // Create object with fake `null` prototype: use iframe Object with cleared prototype


var NullProtoObjectViaIFrame = function () {
  // Thrash, waste and sodomy: IE GC bug
  var iframe = documentCreateElement('iframe');
  var JS = 'java' + SCRIPT + ':';
  var iframeDocument;

  if (iframe.style) {
    iframe.style.display = 'none';
    html.appendChild(iframe); // https://github.com/zloirock/core-js/issues/475

    iframe.src = String(JS);
    iframeDocument = iframe.contentWindow.document;
    iframeDocument.open();
    iframeDocument.write(scriptTag('document.F=Object'));
    iframeDocument.close();
    return iframeDocument.F;
  }
}; // Check for document.domain and active x support
// No need to use active x approach when document.domain is not set
// see https://github.com/es-shims/es5-shim/issues/150
// variation of https://github.com/kitcambridge/es5-shim/commit/4f738ac066346
// avoid IE GC bug


var activeXDocument;

var NullProtoObject = function () {
  try {
    activeXDocument = new ActiveXObject('htmlfile');
  } catch (error) {
    /* ignore */
  }

  NullProtoObject = document.domain && activeXDocument ? NullProtoObjectViaActiveX(activeXDocument) : // old IE
  NullProtoObjectViaIFrame() || NullProtoObjectViaActiveX(activeXDocument); // WSH

  var length = enumBugKeys$1.length;

  while (length--) delete NullProtoObject[PROTOTYPE$1][enumBugKeys$1[length]];

  return NullProtoObject();
};

hiddenKeys$3[IE_PROTO] = true; // `Object.create` method
// https://tc39.es/ecma262/#sec-object.create

var objectCreate = Object.create || function create(O, Properties) {
  var result;

  if (O !== null) {
    EmptyConstructor[PROTOTYPE$1] = anObject$9(O);
    result = new EmptyConstructor();
    EmptyConstructor[PROTOTYPE$1] = null; // add "__proto__" for Object.getPrototypeOf polyfill

    result[IE_PROTO] = O;
  } else result = NullProtoObject();

  return Properties === undefined ? result : defineProperties$5(result, Properties);
};

var wellKnownSymbol$g = wellKnownSymbol$j;
var TO_STRING_TAG$3 = well