bootstrap-table/dist/extensions/treegrid/bootstrap-table-treegrid.js

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(require('jquery')) :
  typeof define === 'function' && define.amd ? define(['jquery'], factory) :
  (global = global || self, factory(global.jQuery));
}(this, function ($) { 'use strict';

  $ = $ && $.hasOwnProperty('default') ? $['default'] : $;

  // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
  var global = typeof window == 'object' && window && window.Math == Math ? window
    : typeof self == 'object' && self && self.Math == Math ? self
    // eslint-disable-next-line no-new-func
    : Function('return this')();

  var hasOwnProperty = {}.hasOwnProperty;

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

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

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

  var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
  var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

  // Nashorn ~ JDK8 bug
  var NASHORN_BUG = nativeGetOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({ 1: 2 }, 1);

  var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
    var descriptor = nativeGetOwnPropertyDescriptor(this, V);
    return !!descriptor && descriptor.enumerable;
  } : nativePropertyIsEnumerable;

  var objectPropertyIsEnumerable = {
  	f: f
  };

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

  var toString = {}.toString;

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

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


  var split = ''.split;

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

  // `RequireObjectCoercible` abstract operation
  // https://tc39.github.io/ecma262/#sec-requireobjectcoercible
  var requireObjectCoercible = function (it) {
    if (it == undefined) throw TypeError("Can't call method on " + it);
    return it;
  };

  // toObject with fallback for non-array-like ES3 strings



  var toIndexedObject = function (it) {
    return indexedObject(requireObjectCoercible(it));
  };

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

  // 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 document = global.document;
  // typeof document.createElement is 'object' in old IE
  var exist = isObject(document) && isObject(document.createElement);

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

  // Thank's IE8 for his funny defineProperty
  var ie8DomDefine = !descriptors && !fails(function () {
    return Object.defineProperty(documentCreateElement('div'), 'a', {
      get: function () { return 7; }
    }).a != 7;
  });

  var nativeGetOwnPropertyDescriptor$1 = Object.getOwnPropertyDescriptor;

  var f$1 = descriptors ? nativeGetOwnPropertyDescriptor$1 : function getOwnPropertyDescriptor(O, P) {
    O = toIndexedObject(O);
    P = toPrimitive(P, true);
    if (ie8DomDefine) try {
      return nativeGetOwnPropertyDescriptor$1(O, P);
    } catch (e) { /* empty */ }
    if (has(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
  };

  var objectGetOwnPropertyDescriptor = {
  	f: f$1
  };

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

  var nativeDefineProperty = Object.defineProperty;

  var f$2 = descriptors ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
    anObject(O);
    P = toPrimitive(P, true);
    anObject(Attributes);
    if (ie8DomDefine) try {
      return nativeDefineProperty(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 objectDefineProperty = {
  	f: f$2
  };

  var hide = descriptors ? function (object, key, value) {
    return objectDefineProperty.f(object, key, createPropertyDescriptor(1, value));
  } : function (object, key, value) {
    object[key] = value;
    return object;
  };

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

  var setGlobal = function (key, value) {
    try {
      hide(global, key, value);
    } catch (e) {
      global[key] = value;
    } return value;
  };

  var shared = createCommonjsModule(function (module) {
  var SHARED = '__core-js_shared__';
  var store = global[SHARED] || setGlobal(SHARED, {});

  (module.exports = function (key, value) {
    return store[key] || (store[key] = value !== undefined ? value : {});
  })('versions', []).push({
    version: '3.0.0',
    mode: 'global',
    copyright: '© 2019 Denis Pushkarev (zloirock.ru)'
  });
  });

  var functionToString = shared('native-function-to-string', Function.toString);

  var WeakMap = global.WeakMap;

  var nativeWeakMap = typeof WeakMap === 'function' && /native code/.test(functionToString.call(WeakMap));

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

  var uid = function (key) {
    return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + postfix).toString(36));
  };

  var shared$1 = shared('keys');


  var sharedKey = function (key) {
    return shared$1[key] || (shared$1[key] = uid(key));
  };

  var hiddenKeys = {};

  var WeakMap$1 = global.WeakMap;
  var set, get, has$1;

  var enforce = function (it) {
    return has$1(it) ? get(it) : set(it, {});
  };

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

  if (nativeWeakMap) {
    var store = new WeakMap$1();
    var wmget = store.get;
    var wmhas = store.has;
    var wmset = store.set;
    set = function (it, metadata) {
      wmset.call(store, it, metadata);
      return metadata;
    };
    get = function (it) {
      return wmget.call(store, it) || {};
    };
    has$1 = function (it) {
      return wmhas.call(store, it);
    };
  } else {
    var STATE = sharedKey('state');
    hiddenKeys[STATE] = true;
    set = function (it, metadata) {
      hide(it, STATE, metadata);
      return metadata;
    };
    get = function (it) {
      return has(it, STATE) ? it[STATE] : {};
    };
    has$1 = function (it) {
      return has(it, STATE);
    };
  }

  var internalState = {
    set: set,
    get: get,
    has: has$1,
    enforce: enforce,
    getterFor: getterFor
  };

  var redefine = createCommonjsModule(function (module) {
  var getInternalState = internalState.get;
  var enforceInternalState = internalState.enforce;
  var TEMPLATE = String(functionToString).split('toString');

  shared('inspectSource', function (it) {
    return functionToString.call(it);
  });

  (module.exports = function (O, key, value, options) {
    var unsafe = options ? !!options.unsafe : false;
    var simple = options ? !!options.enumerable : false;
    var noTargetGet = options ? !!options.noTargetGet : false;
    if (typeof value == 'function') {
      if (typeof key == 'string' && !has(value, 'name')) hide(value, 'name', key);
      enforceInternalState(value).source = TEMPLATE.join(typeof key == 'string' ? key : '');
    }
    if (O === global) {
      if (simple) O[key] = value;
      else setGlobal(key, value);
      return;
    } else if (!unsafe) {
      delete O[key];
    } else if (!noTargetGet && O[key]) {
      simple = true;
    }
    if (simple) O[key] = value;
    else hide(O, key, value);
  // add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
  })(Function.prototype, 'toString', function toString() {
    return typeof this == 'function' && getInternalState(this).source || functionToString.call(this);
  });
  });

  var ceil = Math.ceil;
  var floor = Math.floor;

  // `ToInteger` abstract operation
  // https://tc39.github.io/ecma262/#sec-tointeger
  var toInteger = function (argument) {
    return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor : ceil)(argument);
  };

  var min = Math.min;

  // `ToLength` abstract operation
  // https://tc39.github.io/ecma262/#sec-tolength
  var toLength = function (argument) {
    return argument > 0 ? min(toInteger(argument), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
  };

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

  // `Array.prototype.{ indexOf, includes }` methods implementation
  // false -> Array#indexOf
  // https://tc39.github.io/ecma262/#sec-array.prototype.indexof
  // true  -> Array#includes
  // https://tc39.github.io/ecma262/#sec-array.prototype.includes
  var arrayIncludes = function (IS_INCLUDES) {
    return function ($this, el, fromIndex) {
      var O = toIndexedObject($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 arrayIndexOf = arrayIncludes(false);


  var objectKeysInternal = function (object, names) {
    var O = toIndexedObject(object);
    var i = 0;
    var result = [];
    var key;
    for (key in O) !has(hiddenKeys, key) && 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;
  };

  // IE8- don't enum bug keys
  var enumBugKeys = [
    'constructor',
    'hasOwnProperty',
    'isPrototypeOf',
    'propertyIsEnumerable',
    'toLocaleString',
    'toString',
    'valueOf'
  ];

  // 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)

  var hiddenKeys$1 = enumBugKeys.concat('length', 'prototype');

  var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
    return objectKeysInternal(O, hiddenKeys$1);
  };

  var objectGetOwnPropertyNames = {
  	f: f$3
  };

  var f$4 = Object.getOwnPropertySymbols;

  var objectGetOwnPropertySymbols = {
  	f: f$4
  };

  var Reflect$1 = global.Reflect;

  // all object keys, includes non-enumerable and symbols
  var ownKeys = Reflect$1 && Reflect$1.ownKeys || function ownKeys(it) {
    var keys = objectGetOwnPropertyNames.f(anObject(it));
    var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
    return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
  };

  var copyConstructorProperties = function (target, source) {
    var keys = ownKeys(source);
    var defineProperty = objectDefineProperty.f;
    var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
    for (var i = 0; i < keys.length; i++) {
      var key = keys[i];
      if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
    }
  };

  var replacement = /#|\.prototype\./;

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

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

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

  var isForced_1 = isForced;

  var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;






  /*
    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 FORCED, target, key, targetProperty, sourceProperty, descriptor;
    if (GLOBAL) {
      target = global;
    } else if (STATIC) {
      target = global[TARGET] || setGlobal(TARGET, {});
    } else {
      target = (global[TARGET] || {}).prototype;
    }
    if (target) for (key in source) {
      sourceProperty = source[key];
      if (options.noTargetGet) {
        descriptor = getOwnPropertyDescriptor(target, key);
        targetProperty = descriptor && descriptor.value;
      } else targetProperty = target[key];
      FORCED = isForced_1(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);
      // contained in target
      if (!FORCED && targetProperty !== undefined) {
        if (typeof sourceProperty === typeof targetProperty) continue;
        copyConstructorProperties(sourceProperty, targetProperty);
      }
      // add a flag to not completely full polyfills
      if (options.sham || (targetProperty && targetProperty.sham)) {
        hide(sourceProperty, 'sham', true);
      }
      // extend global
      redefine(target, key, sourceProperty, options);
    }
  };

  // Chrome 38 Symbol has incorrect toString conversion
  var nativeSymbol = !fails(function () {
  });

  var store$1 = shared('wks');

  var Symbol$1 = global.Symbol;


  var wellKnownSymbol = function (name) {
    return store$1[name] || (store$1[name] = nativeSymbol && Symbol$1[name]
      || (nativeSymbol ? Symbol$1 : uid)('Symbol.' + name));
  };

  var defineProperty = objectDefineProperty.f;

  var TO_STRING_TAG = wellKnownSymbol('toStringTag');

  var setToStringTag = function (it, TAG, STATIC) {
    if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
      defineProperty(it, TO_STRING_TAG, { configurable: true, value: TAG });
    }
  };

  var f$5 = wellKnownSymbol;

  var wrappedWellKnownSymbol = {
  	f: f$5
  };

  var path = global;

  var defineProperty$1 = objectDefineProperty.f;

  var defineWellKnownSymbol = function (NAME) {
    var Symbol = path.Symbol || (path.Symbol = {});
    if (!has(Symbol, NAME)) defineProperty$1(Symbol, NAME, {
      value: wrappedWellKnownSymbol.f(NAME)
    });
  };

  // 19.1.2.14 / 15.2.3.14 Object.keys(O)



  var objectKeys = Object.keys || function keys(O) {
    return objectKeysInternal(O, enumBugKeys);
  };

  // all enumerable object keys, includes symbols
  var enumKeys = function (it) {
    var result = objectKeys(it);
    var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
    if (getOwnPropertySymbols) {
      var symbols = getOwnPropertySymbols(it);
      var propertyIsEnumerable = objectPropertyIsEnumerable.f;
      var i = 0;
      var key;
      while (symbols.length > i) if (propertyIsEnumerable.call(it, key = symbols[i++])) result.push(key);
    } return result;
  };

  // `IsArray` abstract operation
  // https://tc39.github.io/ecma262/#sec-isarray
  var isArray = Array.isArray || function isArray(arg) {
    return classofRaw(arg) == 'Array';
  };

  var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
    anObject(O);
    var keys = objectKeys(Properties);
    var length = keys.length;
    var i = 0;
    var key;
    while (length > i) objectDefineProperty.f(O, key = keys[i++], Properties[key]);
    return O;
  };

  var document$1 = global.document;

  var html = document$1 && document$1.documentElement;

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





  var IE_PROTO = sharedKey('IE_PROTO');
  var PROTOTYPE = 'prototype';
  var Empty = function () { /* empty */ };

  // Create object with fake `null` prototype: use iframe Object with cleared prototype
  var createDict = function () {
    // Thrash, waste and sodomy: IE GC bug
    var iframe = documentCreateElement('iframe');
    var length = enumBugKeys.length;
    var lt = '<';
    var script = 'script';
    var gt = '>';
    var js = 'java' + script + ':';
    var iframeDocument;
    iframe.style.display = 'none';
    html.appendChild(iframe);
    iframe.src = String(js);
    iframeDocument = iframe.contentWindow.document;
    iframeDocument.open();
    iframeDocument.write(lt + script + gt + 'document.F=Object' + lt + '/' + script + gt);
    iframeDocument.close();
    createDict = iframeDocument.F;
    while (length--) delete createDict[PROTOTYPE][enumBugKeys[length]];
    return createDict();
  };

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

  hiddenKeys[IE_PROTO] = true;

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

  var nativeGetOwnPropertyNames = objectGetOwnPropertyNames.f;
  var toString$1 = {}.toString;

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

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

  var f$6 = function getOwnPropertyNames(it) {
    return windowNames && toString$1.call(it) == '[object Window]'
      ? getWindowNames(it)
      : nativeGetOwnPropertyNames(toIndexedObject(it));
  };

  var objectGetOwnPropertyNamesExternal = {
  	f: f$6
  };

  // ECMAScript 6 symbols shim




























  var HIDDEN = sharedKey('hidden');

  var SYMBOL = 'Symbol';
  var setInternalState = internalState.set;
  var getInternalState = internalState.getterFor(SYMBOL);
  var nativeGetOwnPropertyDescriptor$2 = objectGetOwnPropertyDescriptor.f;
  var nativeDefineProperty$1 = objectDefineProperty.f;
  var nativeGetOwnPropertyNames$1 = objectGetOwnPropertyNamesExternal.f;
  var $Symbol = global.Symbol;
  var JSON = global.JSON;
  var nativeJSONStringify = JSON && JSON.stringify;
  var PROTOTYPE$1 = 'prototype';
  var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
  var nativePropertyIsEnumerable$1 = objectPropertyIsEnumerable.f;
  var SymbolRegistry = shared('symbol-registry');
  var AllSymbols = shared('symbols');
  var ObjectPrototypeSymbols = shared('op-symbols');
  var WellKnownSymbolsStore = shared('wks');
  var ObjectPrototype = Object[PROTOTYPE$1];
  var QObject = global.QObject;

  // Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
  var USE_SETTER = !QObject || !QObject[PROTOTYPE$1] || !QObject[PROTOTYPE$1].findChild;

  // fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
  var setSymbolDescriptor = descriptors && fails(function () {
    return objectCreate(nativeDefineProperty$1({}, 'a', {
      get: function () { return nativeDefineProperty$1(this, 'a', { value: 7 }).a; }
    })).a != 7;
  }) ? function (it, key, D) {
    var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$2(ObjectPrototype, key);
    if (ObjectPrototypeDescriptor) delete ObjectPrototype[key];
    nativeDefineProperty$1(it, key, D);
    if (ObjectPrototypeDescriptor && it !== ObjectPrototype) {
      nativeDefineProperty$1(ObjectPrototype, key, ObjectPrototypeDescriptor);
    }
  } : nativeDefineProperty$1;

  var wrap = function (tag, description) {
    var symbol = AllSymbols[tag] = objectCreate($Symbol[PROTOTYPE$1]);
    setInternalState(symbol, {
      type: SYMBOL,
      tag: tag,
      description: description
    });
    if (!descriptors) symbol.description = description;
    return symbol;
  };

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

  var $defineProperty = function defineProperty(it, key, D) {
    if (it === ObjectPrototype) $defineProperty(ObjectPrototypeSymbols, key, D);
    anObject(it);
    key = toPrimitive(key, true);
    anObject(D);
    if (has(AllSymbols, key)) {
      if (!D.enumerable) {
        if (!has(it, HIDDEN)) nativeDefineProperty$1(it, HIDDEN, createPropertyDescriptor(1, {}));
        it[HIDDEN][key] = true;
      } else {
        if (has(it, HIDDEN) && it[HIDDEN][key]) it[HIDDEN][key] = false;
        D = objectCreate(D, { enumerable: createPropertyDescriptor(0, false) });
      } return setSymbolDescriptor(it, key, D);
    } return nativeDefineProperty$1(it, key, D);
  };

  var $defineProperties = function defineProperties(it, P) {
    anObject(it);
    var keys = enumKeys(P = toIndexedObject(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(it, P) {
    return P === undefined ? objectCreate(it) : $defineProperties(objectCreate(it), P);
  };

  var $propertyIsEnumerable = function propertyIsEnumerable(key) {
    var E = nativePropertyIsEnumerable$1.call(this, key = toPrimitive(key, true));
    if (this === ObjectPrototype && has(AllSymbols, key) && !has(ObjectPrototypeSymbols, 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 = toIndexedObject(it);
    key = toPrimitive(key, true);
    if (it === ObjectPrototype && has(AllSymbols, key) && !has(ObjectPrototypeSymbols, key)) return;
    var D = nativeGetOwnPropertyDescriptor$2(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 = nativeGetOwnPropertyNames$1(toIndexedObject(it));
    var result = [];
    var i = 0;
    var key;
    while (names.length > i) {
      if (!has(AllSymbols, key = names[i++]) && !has(hiddenKeys, key)) result.push(key);
    } return result;
  };

  var $getOwnPropertySymbols = function getOwnPropertySymbols(it) {
    var IS_OP = it === ObjectPrototype;
    var names = nativeGetOwnPropertyNames$1(IS_OP ? ObjectPrototypeSymbols : toIndexedObject(it));
    var result = [];
    var i = 0;
    var key;
    while (names.length > i) {
      if (has(AllSymbols, key = names[i++]) && (IS_OP ? has(ObjectPrototype, key) : true)) result.push(AllSymbols[key]);
    } return result;
  };

  // `Symbol` constructor
  // https://tc39.github.io/ecma262/#sec-symbol-constructor
  if (!nativeSymbol) {
    $Symbol = function Symbol() {
      if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor');
      var description = arguments[0] === undefined ? undefined : String(arguments[0]);
      var tag = uid(description);
      var setter = function (value) {
        if (this === ObjectPrototype) setter.call(ObjectPrototypeSymbols, value);
        if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
        setSymbolDescriptor(this, tag, createPropertyDescriptor(1, value));
      };
      if (descriptors && USE_SETTER) setSymbolDescriptor(ObjectPrototype, tag, { configurable: true, set: setter });
      return wrap(tag, description);
    };
    redefine($Symbol[PROTOTYPE$1], 'toString', function toString() {
      return getInternalState(this).tag;
    });

    objectPropertyIsEnumerable.f = $propertyIsEnumerable;
    objectDefineProperty.f = $defineProperty;
    objectGetOwnPropertyDescriptor.f = $getOwnPropertyDescriptor;
    objectGetOwnPropertyNames.f = objectGetOwnPropertyNamesExternal.f = $getOwnPropertyNames;
    objectGetOwnPropertySymbols.f = $getOwnPropertySymbols;

    if (descriptors) {
      // https://github.com/tc39/proposal-Symbol-description
      nativeDefineProperty$1($Symbol[PROTOTYPE$1], 'description', {
        configurable: true,
        get: function description() {
          return getInternalState(this).description;
        }
      });
      {
        redefine(ObjectPrototype, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });
      }
    }

    wrappedWellKnownSymbol.f = function (name) {
      return wrap(wellKnownSymbol(name), name);
    };
  }

  _export({ global: true, wrap: true, forced: !nativeSymbol, sham: !nativeSymbol }, { Symbol: $Symbol });

  for (var wellKnownSymbols = objectKeys(WellKnownSymbolsStore), k = 0; wellKnownSymbols.length > k;) {
    defineWellKnownSymbol(wellKnownSymbols[k++]);
  }

  _export({ target: SYMBOL, stat: true, forced: !nativeSymbol }, {
    // `Symbol.for` method
    // https://tc39.github.io/ecma262/#sec-symbol.for
    'for': function (key) {
      return has(SymbolRegistry, key += '')
        ? SymbolRegistry[key]
        : SymbolRegistry[key] = $Symbol(key);
    },
    // `Symbol.keyFor` method
    // https://tc39.github.io/ecma262/#sec-symbol.keyfor
    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 () { USE_SETTER = true; },
    useSimple: function () { USE_SETTER = false; }
  });

  _export({ target: 'Object', stat: true, forced: !nativeSymbol, sham: !descriptors }, {
    // `Object.create` method
    // https://tc39.github.io/ecma262/#sec-object.create
    create: $create,
    // `Object.defineProperty` method
    // https://tc39.github.io/ecma262/#sec-object.defineproperty
    defineProperty: $defineProperty,
    // `Object.defineProperties` method
    // https://tc39.github.io/ecma262/#sec-object.defineproperties
    defineProperties: $defineProperties,
    // `Object.getOwnPropertyDescriptor` method
    // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors
    getOwnPropertyDescriptor: $getOwnPropertyDescriptor
  });

  _export({ target: 'Object', stat: true, forced: !nativeSymbol }, {
    // `Object.getOwnPropertyNames` method
    // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
    getOwnPropertyNames: $getOwnPropertyNames,
    // `Object.getOwnPropertySymbols` method
    // https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols
    getOwnPropertySymbols: $getOwnPropertySymbols
  });

  // `JSON.stringify` method behavior with symbols
  // https://tc39.github.io/ecma262/#sec-json.stringify
  JSON && _export({ target: 'JSON', stat: true, forced: !nativeSymbol || fails(function () {
    var symbol = $Symbol();
    // MS Edge converts symbol values to JSON as {}
    return nativeJSONStringify([symbol]) != '[null]'
      // WebKit converts symbol values to JSON as null
      || nativeJSONStringify({ a: symbol }) != '{}'
      // V8 throws on boxed symbols
      || nativeJSONStringify(Object(symbol)) != '{}';
  }) }, {
    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 nativeJSONStringify.apply(JSON, args);
    }
  });

  // `Symbol.prototype[@@toPrimitive]` method
  // https://tc39.github.io/ecma262/#sec-symbol.prototype-@@toprimitive
  if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) hide($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);
  // `Symbol.prototype[@@toStringTag]` property
  // https://tc39.github.io/ecma262/#sec-symbol.prototype-@@tostringtag
  setToStringTag($Symbol, SYMBOL);

  hiddenKeys[HIDDEN] = true;

  var defineProperty$2 = objectDefineProperty.f;

  var NativeSymbol = global.Symbol;

  if (descriptors && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) ||
    // Safari 12 bug
    NativeSymbol().description !== undefined
  )) {
    var EmptyStringDescriptionStore = {};
    // wrap Symbol constructor for correct work with undefined description
    var SymbolWrapper = function Symbol() {
      var description = arguments.length < 1 || arguments[0] === undefined ? undefined : String(arguments[0]);
      var result = this instanceof SymbolWrapper
        ? new NativeSymbol(description)
        // in Edge 13, String(Symbol(undefined)) === 'Symbol(undefined)'
        : description === undefined ? NativeSymbol() : NativeSymbol(description);
      if (description === '') EmptyStringDescriptionStore[result] = true;
      return result;
    };
    copyConstructorProperties(SymbolWrapper, NativeSymbol);
    var symbolPrototype = SymbolWrapper.prototype = NativeSymbol.prototype;
    symbolPrototype.constructor = SymbolWrapper;

    var symbolToString = symbolPrototype.toString;
    var native = String(NativeSymbol('test')) == 'Symbol(test)';
    var regexp = /^Symbol\((.*)\)[^)]+$/;
    defineProperty$2(symbolPrototype, 'description', {
      configurable: true,
      get: function description() {
        var symbol = isObject(this) ? this.valueOf() : this;
        var string = symbolToString.call(symbol);
        if (has(EmptyStringDescriptionStore, symbol)) return '';
        var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
        return desc === '' ? undefined : desc;
      }
    });

    _export({ global: true, forced: true }, { Symbol: SymbolWrapper });
  }

  // `Symbol.iterator` well-known symbol
  // https://tc39.github.io/ecma262/#sec-symbol.iterator
  defineWellKnownSymbol('iterator');

  // `ToObject` abstract operation
  // https://tc39.github.io/ecma262/#sec-toobject
  var toObject = function (argument) {
    return Object(requireObjectCoercible(argument));
  };

  var createProperty = function (object, key, value) {
    var propertyKey = toPrimitive(key);
    if (propertyKey in object) objectDefineProperty.f(object, propertyKey, createPropertyDescriptor(0, value));
    else object[propertyKey] = value;
  };

  var SPECIES = wellKnownSymbol('species');

  // `ArraySpeciesCreate` abstract operation
  // https://tc39.github.io/ecma262/#sec-arrayspeciescreate
  var arraySpeciesCreate = function (originalArray, length) {
    var C;
    if (isArray(originalArray)) {
      C = originalArray.constructor;
      // cross-realm fallback
      if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;
      else if (isObject(C)) {
        C = C[SPECIES];
        if (C === null) C = undefined;
      }
    } return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
  };

  var SPECIES$1 = wellKnownSymbol('species');

  var arrayMethodHasSpeciesSupport = function (METHOD_NAME) {
    return !fails(function () {
      var array = [];
      var constructor = array.constructor = {};
      constructor[SPECIES$1] = function () {
        return { foo: 1 };
      };
      return array[METHOD_NAME](Boolean).foo !== 1;
    });
  };

  var IS_CONCAT_SPREADABLE = wellKnownSymbol('isConcatSpreadable');
  var MAX_SAFE_INTEGER = 0x1fffffffffffff;
  var MAXIMUM_ALLOWED_INDEX_EXCEEDED = 'Maximum allowed index exceeded';

  var IS_CONCAT_SPREADABLE_SUPPORT = !fails(function () {
    var array = [];
    array[IS_CONCAT_SPREADABLE] = false;
    return array.concat()[0] !== array;
  });

  var SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('concat');

  var isConcatSpreadable = function (O) {
    if (!isObject(O)) return false;
    var spreadable = O[IS_CONCAT_SPREADABLE];
    return spreadable !== undefined ? !!spreadable : isArray(O);
  };

  var FORCED = !IS_CONCAT_SPREADABLE_SUPPORT || !SPECIES_SUPPORT;

  // `Array.prototype.concat` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.concat
  // with adding support of @@isConcatSpreadable and @@species
  _export({ target: 'Array', proto: true, forced: FORCED }, {
    concat: function concat(arg) { // eslint-disable-line no-unused-vars
      var O = toObject(this);
      var A = arraySpeciesCreate(O, 0);
      var n = 0;
      var i, k, length, len, E;
      for (i = -1, length = arguments.length; i < length; i++) {
        E = i === -1 ? O : arguments[i];
        if (isConcatSpreadable(E)) {
          len = toLength(E.length);
          if (n + len > MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
          for (k = 0; k < len; k++, n++) if (k in E) createProperty(A, n, E[k]);
        } else {
          if (n >= MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
          createProperty(A, n++, E);
        }
      }
      A.length = n;
      return A;
    }
  });

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

  // optional / simple context binding
  var bindContext = function (fn, that, length) {
    aFunction(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 (/* ...args */) {
      return fn.apply(that, arguments);
    };
  };

  // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
  // 0 -> Array#forEach
  // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
  // 1 -> Array#map
  // https://tc39.github.io/ecma262/#sec-array.prototype.map
  // 2 -> Array#filter
  // https://tc39.github.io/ecma262/#sec-array.prototype.filter
  // 3 -> Array#some
  // https://tc39.github.io/ecma262/#sec-array.prototype.some
  // 4 -> Array#every
  // https://tc39.github.io/ecma262/#sec-array.prototype.every
  // 5 -> Array#find
  // https://tc39.github.io/ecma262/#sec-array.prototype.find
  // 6 -> Array#findIndex
  // https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
  var arrayMethods = function (TYPE, specificCreate) {
    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 = specificCreate || arraySpeciesCreate;
    return function ($this, callbackfn, that) {
      var O = toObject($this);
      var self = indexedObject(O);
      var boundFunction = bindContext(callbackfn, that, 3);
      var length = toLength(self.length);
      var index = 0;
      var target = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
      var value, result;
      for (;length > index; index++) if (NO_HOLES || index in self) {
        value = self[index];
        result = boundFunction(value, index, O);
        if (TYPE) {
          if (IS_MAP) target[index] = result; // map
          else if (result) switch (TYPE) {
            case 3: return true;              // some
            case 5: return value;             // find
            case 6: return index;             // findIndex
            case 2: target.push(value);       // filter
          } else if (IS_EVERY) return false;  // every
        }
      }
      return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
    };
  };

  var internalFilter = arrayMethods(2);

  var SPECIES_SUPPORT$1 = arrayMethodHasSpeciesSupport('filter');

  // `Array.prototype.filter` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.filter
  // with adding support of @@species
  _export({ target: 'Array', proto: true, forced: !SPECIES_SUPPORT$1 }, {
    filter: function filter(callbackfn /* , thisArg */) {
      return internalFilter(this, callbackfn, arguments[1]);
    }
  });

  var UNSCOPABLES = wellKnownSymbol('unscopables');


  var ArrayPrototype = Array.prototype;

  // Array.prototype[@@unscopables]
  // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
  if (ArrayPrototype[UNSCOPABLES] == undefined) {
    hide(ArrayPrototype, UNSCOPABLES, objectCreate(null));
  }

  // add a key to Array.prototype[@@unscopables]
  var addToUnscopables = function (key) {
    ArrayPrototype[UNSCOPABLES][key] = true;
  };

  var correctPrototypeGetter = !fails(function () {
    function F() { /* empty */ }
    F.prototype.constructor = null;
    return Object.getPrototypeOf(new F()) !== F.prototype;
  });

  // 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)


  var IE_PROTO$1 = sharedKey('IE_PROTO');

  var ObjectPrototype$1 = Object.prototype;

  var objectGetPrototypeOf = correctPrototypeGetter ? Object.getPrototypeOf : function (O) {
    O = toObject(O);
    if (has(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 ITERATOR = wellKnownSymbol('iterator');
  var BUGGY_SAFARI_ITERATORS = false;

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

  // `%IteratorPrototype%` object
  // https://tc39.github.io/ecma262/#sec-%iteratorprototype%-object
  var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;

  if ([].keys) {
    arrayIterator = [].keys();
    // Safari 8 has buggy iterators w/o `next`
    if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;
    else {
      PrototypeOfArrayIteratorPrototype = objectGetPrototypeOf(objectGetPrototypeOf(arrayIterator));
      if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;
    }
  }

  if (IteratorPrototype == undefined) IteratorPrototype = {};

  // 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
  if (!has(IteratorPrototype, ITERATOR)) hide(IteratorPrototype, ITERATOR, returnThis);

  var iteratorsCore = {
    IteratorPrototype: IteratorPrototype,
    BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS
  };

  var IteratorPrototype$1 = iteratorsCore.IteratorPrototype;

  var createIteratorConstructor = function (IteratorConstructor, NAME, next) {
    var TO_STRING_TAG = NAME + ' Iterator';
    IteratorConstructor.prototype = objectCreate(IteratorPrototype$1, { next: createPropertyDescriptor(1, next) });
    setToStringTag(IteratorConstructor, TO_STRING_TAG, false, true);
    return IteratorConstructor;
  };

  var validateSetPrototypeOfArguments = function (O, proto) {
    anObject(O);
    if (!isObject(proto) && proto !== null) {
      throw TypeError("Can't set " + String(proto) + ' as a prototype');
    }
  };

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


  var objectSetPrototypeOf = Object.setPrototypeOf || ('__proto__' in {} ? function () { // eslint-disable-line
    var correctSetter = false;
    var test = {};
    var setter;
    try {
      setter = Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set;
      setter.call(test, []);
      correctSetter = test instanceof Array;
    } catch (e) { /* empty */ }
    return function setPrototypeOf(O, proto) {
      validateSetPrototypeOfArguments(O, proto);
      if (correctSetter) setter.call(O, proto);
      else O.__proto__ = proto;
      return O;
    };
  }() : undefined);

  var ITERATOR$1 = wellKnownSymbol('iterator');


  var IteratorPrototype$2 = iteratorsCore.IteratorPrototype;
  var BUGGY_SAFARI_ITERATORS$1 = iteratorsCore.BUGGY_SAFARI_ITERATORS;
  var KEYS = 'keys';
  var VALUES = 'values';
  var ENTRIES = 'entries';

  var returnThis$1 = function () { return this; };

  var defineIterator = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
    createIteratorConstructor(IteratorConstructor, NAME, next);

    var getIterationMethod = function (KIND) {
      if (KIND === DEFAULT && defaultIterator) return defaultIterator;
      if (!BUGGY_SAFARI_ITERATORS$1 && KIND in IterablePrototype) return IterablePrototype[KIND];
      switch (KIND) {
        case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };
        case VALUES: return function values() { return new IteratorConstructor(this, KIND); };
        case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };
      } return function () { return new IteratorConstructor(this); };
    };

    var TO_STRING_TAG = NAME + ' Iterator';
    var INCORRECT_VALUES_NAME = false;
    var IterablePrototype = Iterable.prototype;
    var nativeIterator = IterablePrototype[ITERATOR$1]
      || IterablePrototype['@@iterator']
      || DEFAULT && IterablePrototype[DEFAULT];
    var defaultIterator = !BUGGY_SAFARI_ITERATORS$1 && nativeIterator || getIterationMethod(DEFAULT);
    var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
    var CurrentIteratorPrototype, methods, KEY;

    // fix native
    if (anyNativeIterator) {
      CurrentIteratorPrototype = objectGetPrototypeOf(anyNativeIterator.call(new Iterable()));
      if (IteratorPrototype$2 !== Object.prototype && CurrentIteratorPrototype.next) {
        if (objectGetPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype$2) {
          if (objectSetPrototypeOf) {
            objectSetPrototypeOf(CurrentIteratorPrototype, IteratorPrototype$2);
          } else if (typeof CurrentIteratorPrototype[ITERATOR$1] != 'function') {
            hide(CurrentIteratorPrototype, ITERATOR$1, returnThis$1);
          }
        }
        // Set @@toStringTag to native iterators
        setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true, true);
      }
    }

    // fix Array#{values, @@iterator}.name in V8 / FF
    if (DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
      INCORRECT_VALUES_NAME = true;
      defaultIterator = function values() { return nativeIterator.call(this); };
    }

    // define iterator
    if (IterablePrototype[ITERATOR$1] !== defaultIterator) {
      hide(IterablePrototype, ITERATOR$1, defaultIterator);
    }

    // export additional methods
    if (DEFAULT) {
      methods = {
        values: getIterationMethod(VALUES),
        keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),
        entries: getIterationMethod(ENTRIES)
      };
      if (FORCED) for (KEY in methods) {
        if (BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
          redefine(IterablePrototype, KEY, methods[KEY]);
        }
      } else _export({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME }, methods);
    }

    return methods;
  };

  var ARRAY_ITERATOR = 'Array Iterator';
  var setInternalState$1 = internalState.set;
  var getInternalState$1 = internalState.getterFor(ARRAY_ITERATOR);

  // `Array.prototype.entries` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.entries
  // `Array.prototype.keys` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.keys
  // `Array.prototype.values` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.values
  // `Array.prototype[@@iterator]` method
  // https://tc39.github.io/ecma262/#sec-array.prototype-@@iterator
  // `CreateArrayIterator` internal method
  // https://tc39.github.io/ecma262/#sec-createarrayiterator
  var es_array_iterator = defineIterator(Array, 'Array', function (iterated, kind) {
    setInternalState$1(this, {
      type: ARRAY_ITERATOR,
      target: toIndexedObject(iterated), // target
      index: 0,                          // next index
      kind: kind                         // kind
    });
  // `%ArrayIteratorPrototype%.next` method
  // https://tc39.github.io/ecma262/#sec-%arrayiteratorprototype%.next
  }, function () {
    var state = getInternalState$1(this);
    var target = state.target;
    var kind = state.kind;
    var index = state.index++;
    if (!target || index >= target.length) {
      state.target = undefined;
      return { value: undefined, done: true };
    }
    if (kind == 'keys') return { value: index, done: false };
    if (kind == 'values') return { value: target[index], done: false };
    return { value: [index, target[index]], done: false };
  }, 'values');

  // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
  addToUnscopables('keys');
  addToUnscopables('values');
  addToUnscopables('entries');

  var sloppyArrayMethod = function (METHOD_NAME, argument) {
    var method = [][METHOD_NAME];
    return !method || !fails(function () {
      // eslint-disable-next-line no-useless-call
      method.call(null, argument || function () { throw Error(); }, 1);
    });
  };

  var nativeJoin = [].join;

  var ES3_STRINGS = indexedObject != Object;
  var SLOPPY_METHOD = sloppyArrayMethod('join', ',');

  // `Array.prototype.join` method
  // https://tc39.github.io/ecma262/#sec-array.prototype.join
  _export({ target: 'Array', proto: true, forced: ES3_STRINGS || SLOPPY_METHOD }, {
    join: function join(separator) {
      return nativeJoin.call(toIndexedObject(this), separator === undefined ? ',' : separator);
    }
  });

  var TO_STRING_TAG$1 = wellKnownSymbol('toStringTag');
  // ES3 wrong here
  var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';

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

  // getting tag from ES6+ `Object.prototype.toString`
  var classof = function (it) {
    var O, tag, result;
    return it === undefined ? 'Undefined' : it === null ? 'Null'
      // @@toStringTag case
      : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG$1)) == 'string' ? tag
      // builtinTag case
      : CORRECT_ARGUMENTS ? classofRaw(O)
      // ES3 arguments fallback
      : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
  };

  var TO_STRING_TAG$2 = wellKnownSymbol('toStringTag');
  var test = {};

  test[TO_STRING_TAG$2] = 'z';

  // `Object.prototype.toString` method implementation
  // https://tc39.github.io/ecma262/#sec-object.prototype.tostring
  var objectToString = String(test) !== '[object z]' ? function toString() {
    return '[object ' + classof(this) + ']';
  } : test.toString;

  var ObjectPrototype$2 = Object.prototype;

  // `Object.prototype.toString` method
  // https://tc39.github.io/ecma262/#sec-object.prototype.tostring
  if (objectToString !== ObjectPrototype$2.toString) {
    redefine(ObjectPrototype$2, 'toString', objectToString, { unsafe: true });
  }

  // CONVERT_TO_STRING: true  -> String#at
  // CONVERT_TO_STRING: false -> String#codePointAt
  var stringAt = function (that, pos, CONVERT_TO_STRING) {
    var S = String(requireObjectCoercible(that));
    var position = toInteger(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 STRING_ITERATOR = 'String Iterator';
  var setInternalState$2 = internalState.set;
  var getInternalState$2 = internalState.getterFor(STRING_ITERATOR);

  // `String.prototype[@@iterator]` method
  // https://tc39.github.io/ecma262/#sec-string.prototype-@@iterator
  defineIterator(String, 'String', function (iterated) {
    setInternalState$2(this, {
      type: STRING_ITERATOR,
      string: String(iterated),
      index: 0
    });
  // `%StringIteratorPrototype%.next` method
  // https://tc39.github.io/ecma262/#sec-%stringiteratorprototype%.next
  }, function next() {
    var state = getInternalState$2(this);
    var string = state.string;
    var index = state.index;
    var point;
    if (index >= string.length) return { value: undefined, done: true };
    point = stringAt(string, index, true);
    state.index += point.length;
    return { value: point, done: false };
  });

  // iterable DOM collections
  // flag - `iterable` interface - 'entries', 'keys', 'values', 'forEach' methods
  var domIterables = {
    CSSRuleList: 0,
    CSSStyleDeclaration: 0,
    CSSValueList: 0,
    ClientRectList: 0,
    DOMRectList: 0,
    DOMStringList: 0,
    DOMTokenList: 1,
    DataTransferItemList: 0,
    FileList: 0,
    HTMLAllCollection: 0,
    HTMLCollection: 0,
    HTMLFormElement: 0,
    HTMLSelectElement: 0,
    MediaList: 0,
    MimeTypeArray: 0,
    NamedNodeMap: 0,
    NodeList: 1,
    PaintRequestList: 0,
    Plugin: 0,
    PluginArray: 0,
    SVGLengthList: 0,
    SVGNumberList: 0,
    SVGPathSegList: 0,
    SVGPointList: 0,
    SVGStringList: 0,
    SVGTransformList: 0,
    SourceBufferList: 0,
    StyleSheetList: 0,
    TextTrackCueList: 0,
    TextTrackList: 0,
    TouchList: 0
  };

  var ITERATOR$2 = wellKnownSymbol('iterator');
  var TO_STRING_TAG$3 = wellKnownSymbol('toStringTag');
  var ArrayValues = es_array_iterator.values;

  for (var COLLECTION_NAME in domIterables) {
    var Collection = global[COLLECTION_NAME];
    var CollectionPrototype = Collection && Collection.prototype;
    if (CollectionPrototype) {
      // some Chrome versions have non-configurable methods on DOMTokenList
      if (CollectionPrototype[ITERATOR$2] !== ArrayValues) try {
        hide(CollectionPrototype, ITERATOR$2, ArrayValues);
      } catch (e) {
        CollectionPrototype[ITERATOR$2] = ArrayValues;
      }
      if (!CollectionPrototype[TO_STRING_TAG$3]) hide(CollectionPrototype, TO_STRING_TAG$3, COLLECTION_NAME);
      if (domIterables[COLLECTION_NAME]) for (var METHOD_NAME in es_array_iterator) {
        // some Chrome versions have non-configurable methods on DOMTokenList
        if (CollectionPrototype[METHOD_NAME] !== es_array_iterator[METHOD_NAME]) try {
          hide(CollectionPrototype, METHOD_NAME, es_array_iterator[METHOD_NAME]);
        } catch (e) {
          CollectionPrototype[METHOD_NAME] = es_array_iterator[METHOD_NAME];
        }
      }
    }
  }

  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 _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 _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);
  }

  /**
   * @author: YL
   * @update: zhixin wen <wenzhixin2010@gmail.com>
   */

  $.extend($.fn.bootstrapTable.defaults, {
    treeEnable: false,
    treeShowField: null,
    idField: 'id',
    parentIdField: 'pid',
    rootParentId: null
  });

  $.BootstrapTable =
  /*#__PURE__*/
  function (_$$BootstrapTable) {
    _inherits(_class, _$$BootstrapTable);

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

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

    _createClass(_class, [{
      key: "init",
      value: function init() {
        var _get2;

        this._rowStyle = this.options.rowStyle;

        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
          args[_key] = arguments[_key];
        }

        (_get2 = _get(_getPrototypeOf(_class.prototype), "init", this)).call.apply(_get2, [this].concat(args));
      }
    }, {
      key: "initHeader",
      value: function initHeader() {
        var _get3;

        for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
          args[_key2] = arguments[_key2];
        }

        (_get3 = _get(_getPrototypeOf(_class.prototype), "initHeader", this)).call.apply(_get3, [this].concat(args));

        var treeShowField = this.options.treeShowField;

        if (treeShowField) {
          var _iteratorNormalCompletion = true;
          var _didIteratorError = false;
          var _iteratorError = undefined;

          try {
            for (var _iterator = this.header.fields[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
              var field = _step.value;

              if (treeShowField === field) {
                this.treeEnable = true;
                break;
              }
            }
          } catch (err) {
            _didIteratorError = true;
            _iteratorError = err;
          } finally {
            try {
              if (!_iteratorNormalCompletion && _iterator.return != null) {
                _iterator.return();
              }
            } finally {
              if (_didIteratorError) {
                throw _iteratorError;
              }
            }
          }
        }
      }
    }, {
      key: "initBody",
      value: function initBody() {
        var _get4;

        this.virtualScrollDisabled = this.treeEnable;

        for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
          args[_key3] = arguments[_key3];
        }

        (_get4 = _get(_getPrototypeOf(_class.prototype), "initBody", this)).call.apply(_get4, [this].concat(args));
      }
    }, {
      key: "initTr",
      value: function initTr(item, idx, data, parentDom) {
        var _this = this;

        var nodes = data.filter(function (it) {
          return item[_this.options.idField] === it[_this.options.parentIdField];
        });
        parentDom.append(_get(_getPrototypeOf(_class.prototype), "initRow", this).call(this, item, idx, data, parentDom)); // init sub node

        var len = nodes.length - 1;

        for (var i = 0; i <= len; i++) {
          var node = nodes[i];
          var defaultItem = $.extend(true, {}, item);
          node._level = defaultItem._level + 1;
          node._parent = defaultItem;

          if (i === len) {
            node._last = 1;
          } // jquery.treegrid.js


          this.options.rowStyle = function (item, idx) {
            var res = _this._rowStyle(item, idx);

            var id = item[_this.options.idField] ? item[_this.options.idField] : 0;
            var pid = item[_this.options.parentIdField] ? item[_this.options.parentIdField] : 0;
            res.classes = [res.classes || '', "treegrid-".concat(id), "treegrid-parent-".concat(pid)].join(' ');
            return res;
          };

          this.initTr(node, $.inArray(node, data), data, parentDom);
        }
      }
    }, {
      key: "initRow",
      value: function initRow(item, idx, data, parentDom) {
        var _this2 = this;

        if (this.treeEnable) {
          if (this.options.rootParentId === item[this.parentIdField] || !item[this.parentIdField]) {
            if (item._level === undefined) {
              item._level = 0;
            } // jquery.treegrid.js


            this.options.rowStyle = function (item, idx) {
              var res = _this2._rowStyle(item, idx);

              var x = item[_this2.options.idField] ? item[_this2.options.idField] : 0;
              res.classes = [res.classes || '', "treegrid-".concat(x)].join(' ');
              return res;
            };

            this.initTr(item, idx, data, parentDom);
            return true;
          }

          return false;
        }

        return _get(_getPrototypeOf(_class.prototype), "initRow", this).call(this, item, idx, data, parentDom);
      }
    }]);

    return _class;
  }($.BootstrapTable);

}));