bootstrap-table/dist/extensions/multiple-sort/bootstrap-table-multiple-sort.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'] : $;

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

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

	var O = 'object';
	var check = function (it) {
	  return it && it.Math == Math && it;
	};

	// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
	var global_1 =
	  // eslint-disable-next-line no-undef
	  check(typeof globalThis == O && globalThis) ||
	  check(typeof window == O && window) ||
	  check(typeof self == O && self) ||
	  check(typeof commonjsGlobal == O && commonjsGlobal) ||
	  // eslint-disable-next-line no-new-func
	  Function('return this')();

	var fails = function (exec) {
	  try {
	    return !!exec();
	  } catch (error) {
	    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 getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

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

	// `Object.prototype.propertyIsEnumerable` method implementation
	// https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable
	var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
	  var descriptor = getOwnPropertyDescriptor(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);
	};

	var split = ''.split;

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

	// `ToPrimitive` abstract operation
	// https://tc39.github.io/ecma262/#sec-toprimitive
	// 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 (input, PREFERRED_STRING) {
	  if (!isObject(input)) return input;
	  var fn, val;
	  if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
	  if (typeof (fn = input.valueOf) == 'function' && !isObject(val = fn.call(input))) return val;
	  if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
	  throw TypeError("Can't convert object to primitive value");
	};

	var hasOwnProperty = {}.hasOwnProperty;

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

	var document = global_1.document;
	// typeof document.createElement is 'object' in old IE
	var EXISTS = isObject(document) && isObject(document.createElement);

	var documentCreateElement = function (it) {
	  return EXISTS ? 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 = Object.getOwnPropertyDescriptor;

	// `Object.getOwnPropertyDescriptor` method
	// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
	var f$1 = descriptors ? nativeGetOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {
	  O = toIndexedObject(O);
	  P = toPrimitive(P, true);
	  if (ie8DomDefine) try {
	    return nativeGetOwnPropertyDescriptor(O, P);
	  } catch (error) { /* 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;

	// `Object.defineProperty` method
	// https://tc39.github.io/ecma262/#sec-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 (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 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;
	};

	var setGlobal = function (key, value) {
	  try {
	    hide(global_1, key, value);
	  } catch (error) {
	    global_1[key] = value;
	  } return value;
	};

	var shared = createCommonjsModule(function (module) {
	var SHARED = '__core-js_shared__';
	var store = global_1[SHARED] || setGlobal(SHARED, {});

	(module.exports = function (key, value) {
	  return store[key] || (store[key] = value !== undefined ? value : {});
	})('versions', []).push({
	  version: '3.1.3',
	  mode:  'global',
	  copyright: '© 2019 Denis Pushkarev (zloirock.ru)'
	});
	});

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

	var WeakMap = global_1.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(' + String(key === undefined ? '' : key) + ')_' + (++id + postfix).toString(36);
	};

	var keys = shared('keys');

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

	var hiddenKeys = {};

	var WeakMap$1 = global_1.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_1) {
	    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 path = global_1;

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

	var getBuiltIn = function (namespace, method) {
	  return arguments.length < 2 ? aFunction(path[namespace]) || aFunction(global_1[namespace])
	    : path[namespace] && path[namespace][method] || global_1[namespace] && global_1[namespace][method];
	};

	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; // 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
	var createMethod = 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) && O[index] === el) return IS_INCLUDES || index || 0;
	    } return !IS_INCLUDES && -1;
	  };
	};

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

	var indexOf = arrayIncludes.indexOf;


	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++])) {
	    ~indexOf(result, key) || result.push(key);
	  }
	  return result;
	};

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

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

	// `Object.getOwnPropertyNames` method
	// https://tc39.github.io/ecma262/#sec-object.getownpropertynames
	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
	};

	// all object keys, includes non-enumerable and symbols
	var ownKeys = getBuiltIn('Reflect', '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$1 = 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_1;
	  } else if (STATIC) {
	    target = global_1[TARGET] || setGlobal(TARGET, {});
	  } else {
	    target = (global_1[TARGET] || {}).prototype;
	  }
	  if (target) for (key in source) {
	    sourceProperty = source[key];
	    if (options.noTargetGet) {
	      descriptor = getOwnPropertyDescriptor$1(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);
	  }
	};

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

	// `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 nativeSymbol = !!Object.getOwnPropertySymbols && !fails(function () {
	  // Chrome 38 Symbol has incorrect toString conversion
	  // eslint-disable-next-line no-undef
	  return !String(Symbol());
	});

	var Symbol$1 = global_1.Symbol;
	var store$1 = shared('wks');

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

	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$1 = 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$1(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);
	  };
	};

	var push = [].push;

	// `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
	var createMethod$1 = function (TYPE) {
	  var IS_MAP = TYPE == 1;
	  var IS_FILTER = TYPE == 2;
	  var IS_SOME = TYPE == 3;
	  var IS_EVERY = TYPE == 4;
	  var IS_FIND_INDEX = TYPE == 6;
	  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
	  return function ($this, callbackfn, that, specificCreate) {
	    var O = toObject($this);
	    var self = indexedObject(O);
	    var boundFunction = bindContext(callbackfn, that, 3);
	    var length = toLength(self.length);
	    var index = 0;
	    var create = specificCreate || arraySpeciesCreate;
	    var target = IS_MAP ? create($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: push.call(target, value); // filter
	        } else if (IS_EVERY) return false;  // every
	      }
	    }
	    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
	  };
	};

	var arrayIteration = {
	  // `Array.prototype.forEach` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
	  forEach: createMethod$1(0),
	  // `Array.prototype.map` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.map
	  map: createMethod$1(1),
	  // `Array.prototype.filter` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.filter
	  filter: createMethod$1(2),
	  // `Array.prototype.some` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.some
	  some: createMethod$1(3),
	  // `Array.prototype.every` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.every
	  every: createMethod$1(4),
	  // `Array.prototype.find` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.find
	  find: createMethod$1(5),
	  // `Array.prototype.findIndex` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
	  findIndex: createMethod$1(6)
	};

	// `Object.keys` method
	// https://tc39.github.io/ecma262/#sec-object.keys
	var objectKeys = Object.keys || function keys(O) {
	  return objectKeysInternal(O, enumBugKeys);
	};

	// `Object.defineProperties` method
	// https://tc39.github.io/ecma262/#sec-object.defineproperties
	var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
	  anObject(O);
	  var keys = objectKeys(Properties);
	  var length = keys.length;
	  var index = 0;
	  var key;
	  while (length > index) objectDefineProperty.f(O, key = keys[index++], Properties[key]);
	  return O;
	};

	var html = getBuiltIn('document', 'documentElement');

	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();
	};

	// `Object.create` method
	// https://tc39.github.io/ecma262/#sec-object.create
	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;

	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 $find = arrayIteration.find;


	var FIND = 'find';
	var SKIPS_HOLES = true;

	// Shouldn't skip holes
	if (FIND in []) Array(1)[FIND](function () { SKIPS_HOLES = false; });

	// `Array.prototype.find` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.find
	_export({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {
	  find: function find(callbackfn /* , that = undefined */) {
	    return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables(FIND);

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


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

	var SPECIES$2 = wellKnownSymbol('species');
	var nativeSlice = [].slice;
	var max$1 = Math.max;

	// `Array.prototype.slice` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.slice
	// fallback for not array-like ES3 strings and DOM objects
	_export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('slice') }, {
	  slice: function slice(start, end) {
	    var O = toIndexedObject(this);
	    var length = toLength(O.length);
	    var k = toAbsoluteIndex(start, length);
	    var fin = toAbsoluteIndex(end === undefined ? length : end, length);
	    // inline `ArraySpeciesCreate` for usage native `Array#slice` where it's possible
	    var Constructor, result, n;
	    if (isArray(O)) {
	      Constructor = O.constructor;
	      // cross-realm fallback
	      if (typeof Constructor == 'function' && (Constructor === Array || isArray(Constructor.prototype))) {
	        Constructor = undefined;
	      } else if (isObject(Constructor)) {
	        Constructor = Constructor[SPECIES$2];
	        if (Constructor === null) Constructor = undefined;
	      }
	      if (Constructor === Array || Constructor === undefined) {
	        return nativeSlice.call(O, k, fin);
	      }
	    }
	    result = new (Constructor === undefined ? Array : Constructor)(max$1(fin - k, 0));
	    for (n = 0; k < fin; k++, n++) if (k in O) createProperty(result, n, O[k]);
	    result.length = n;
	    return result;
	  }
	});

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

	// IE8-
	var FAILS_ON_UNDEFINED = fails(function () {
	  test.sort(undefined);
	});
	// V8 bug
	var FAILS_ON_NULL = fails(function () {
	  test.sort(null);
	});
	// Old WebKit
	var SLOPPY_METHOD$1 = sloppyArrayMethod('sort');

	var FORCED$1 = FAILS_ON_UNDEFINED || !FAILS_ON_NULL || SLOPPY_METHOD$1;

	// `Array.prototype.sort` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.sort
	_export({ target: 'Array', proto: true, forced: FORCED$1 }, {
	  sort: function sort(comparefn) {
	    return comparefn === undefined
	      ? nativeSort.call(toObject(this))
	      : nativeSort.call(toObject(this), aFunction$1(comparefn));
	  }
	});

	var max$2 = Math.max;
	var min$2 = Math.min;
	var MAX_SAFE_INTEGER$1 = 0x1FFFFFFFFFFFFF;
	var MAXIMUM_ALLOWED_LENGTH_EXCEEDED = 'Maximum allowed length exceeded';

	// `Array.prototype.splice` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.splice
	// with adding support of @@species
	_export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('splice') }, {
	  splice: function splice(start, deleteCount /* , ...items */) {
	    var O = toObject(this);
	    var len = toLength(O.length);
	    var actualStart = toAbsoluteIndex(start, len);
	    var argumentsLength = arguments.length;
	    var insertCount, actualDeleteCount, A, k, from, to;
	    if (argumentsLength === 0) {
	      insertCount = actualDeleteCount = 0;
	    } else if (argumentsLength === 1) {
	      insertCount = 0;
	      actualDeleteCount = len - actualStart;
	    } else {
	      insertCount = argumentsLength - 2;
	      actualDeleteCount = min$2(max$2(toInteger(deleteCount), 0), len - actualStart);
	    }
	    if (len + insertCount - actualDeleteCount > MAX_SAFE_INTEGER$1) {
	      throw TypeError(MAXIMUM_ALLOWED_LENGTH_EXCEEDED);
	    }
	    A = arraySpeciesCreate(O, actualDeleteCount);
	    for (k = 0; k < actualDeleteCount; k++) {
	      from = actualStart + k;
	      if (from in O) createProperty(A, k, O[from]);
	    }
	    A.length = actualDeleteCount;
	    if (insertCount < actualDeleteCount) {
	      for (k = actualStart; k < len - actualDeleteCount; k++) {
	        from = k + actualDeleteCount;
	        to = k + insertCount;
	        if (from in O) O[to] = O[from];
	        else delete O[to];
	      }
	      for (k = len; k > len - actualDeleteCount + insertCount; k--) delete O[k - 1];
	    } else if (insertCount > actualDeleteCount) {
	      for (k = len - actualDeleteCount; k > actualStart; k--) {
	        from = k + actualDeleteCount - 1;
	        to = k + insertCount - 1;
	        if (from in O) O[to] = O[from];
	        else delete O[to];
	      }
	    }
	    for (k = 0; k < insertCount; k++) {
	      O[k + actualStart] = arguments[k + 2];
	    }
	    O.length = len - actualDeleteCount + insertCount;
	    return A;
	  }
	});

	var TO_STRING_TAG = 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 (error) { /* 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)) == '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$1 = wellKnownSymbol('toStringTag');
	var test$1 = {};

	test$1[TO_STRING_TAG$1] = 'z';

	// `Object.prototype.toString` method implementation
	// https://tc39.github.io/ecma262/#sec-object.prototype.tostring
	var objectToString = String(test$1) !== '[object z]' ? function toString() {
	  return '[object ' + classof(this) + ']';
	} : test$1.toString;

	var ObjectPrototype = Object.prototype;

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

	// a string of all valid unicode whitespaces
	// eslint-disable-next-line max-len
	var whitespaces = '\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';

	var whitespace = '[' + whitespaces + ']';
	var ltrim = RegExp('^' + whitespace + whitespace + '*');
	var rtrim = RegExp(whitespace + whitespace + '*$');

	// `String.prototype.{ trim, trimStart, trimEnd, trimLeft, trimRight }` methods implementation
	var createMethod$2 = function (TYPE) {
	  return function ($this) {
	    var string = String(requireObjectCoercible($this));
	    if (TYPE & 1) string = string.replace(ltrim, '');
	    if (TYPE & 2) string = string.replace(rtrim, '');
	    return string;
	  };
	};

	var stringTrim = {
	  // `String.prototype.{ trimLeft, trimStart }` methods
	  // https://tc39.github.io/ecma262/#sec-string.prototype.trimstart
	  start: createMethod$2(1),
	  // `String.prototype.{ trimRight, trimEnd }` methods
	  // https://tc39.github.io/ecma262/#sec-string.prototype.trimend
	  end: createMethod$2(2),
	  // `String.prototype.trim` method
	  // https://tc39.github.io/ecma262/#sec-string.prototype.trim
	  trim: createMethod$2(3)
	};

	var trim = stringTrim.trim;


	var nativeParseFloat = global_1.parseFloat;
	var FORCED$2 = 1 / nativeParseFloat(whitespaces + '-0') !== -Infinity;

	// `parseFloat` method
	// https://tc39.github.io/ecma262/#sec-parsefloat-string
	var _parseFloat = FORCED$2 ? function parseFloat(string) {
	  var trimmedString = trim(String(string));
	  var result = nativeParseFloat(trimmedString);
	  return result === 0 && trimmedString.charAt(0) == '-' ? -0 : result;
	} : nativeParseFloat;

	// `parseFloat` method
	// https://tc39.github.io/ecma262/#sec-parsefloat-string
	_export({ global: true, forced: parseFloat != _parseFloat }, {
	  parseFloat: _parseFloat
	});

	// `RegExp.prototype.flags` getter implementation
	// https://tc39.github.io/ecma262/#sec-get-regexp.prototype.flags
	var regexpFlags = function () {
	  var that = anObject(this);
	  var result = '';
	  if (that.global) result += 'g';
	  if (that.ignoreCase) result += 'i';
	  if (that.multiline) result += 'm';
	  if (that.dotAll) result += 's';
	  if (that.unicode) result += 'u';
	  if (that.sticky) result += 'y';
	  return result;
	};

	var TO_STRING = 'toString';
	var RegExpPrototype = RegExp.prototype;
	var nativeToString = RegExpPrototype[TO_STRING];

	var NOT_GENERIC = fails(function () { return nativeToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });
	// FF44- RegExp#toString has a wrong name
	var INCORRECT_NAME = nativeToString.name != TO_STRING;

	// `RegExp.prototype.toString` method
	// https://tc39.github.io/ecma262/#sec-regexp.prototype.tostring
	if (NOT_GENERIC || INCORRECT_NAME) {
	  redefine(RegExp.prototype, TO_STRING, function toString() {
	    var R = anObject(this);
	    var p = String(R.source);
	    var rf = R.flags;
	    var f = String(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype) ? regexpFlags.call(R) : rf);
	    return '/' + p + '/' + f;
	  }, { unsafe: true });
	}

	var nativeExec = RegExp.prototype.exec;
	// This always refers to the native implementation, because the
	// String#replace polyfill uses ./fix-regexp-well-known-symbol-logic.js,
	// which loads this file before patching the method.
	var nativeReplace = String.prototype.replace;

	var patchedExec = nativeExec;

	var UPDATES_LAST_INDEX_WRONG = (function () {
	  var re1 = /a/;
	  var re2 = /b*/g;
	  nativeExec.call(re1, 'a');
	  nativeExec.call(re2, 'a');
	  return re1.lastIndex !== 0 || re2.lastIndex !== 0;
	})();

	// nonparticipating capturing group, copied from es5-shim's String#split patch.
	var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;

	var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED;

	if (PATCH) {
	  patchedExec = function exec(str) {
	    var re = this;
	    var lastIndex, reCopy, match, i;

	    if (NPCG_INCLUDED) {
	      reCopy = new RegExp('^' + re.source + '$(?!\\s)', regexpFlags.call(re));
	    }
	    if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;

	    match = nativeExec.call(re, str);

	    if (UPDATES_LAST_INDEX_WRONG && match) {
	      re.lastIndex = re.global ? match.index + match[0].length : lastIndex;
	    }
	    if (NPCG_INCLUDED && match && match.length > 1) {
	      // Fix browsers whose `exec` methods don't consistently return `undefined`
	      // for NPCG, like IE8. NOTE: This doesn' work for /(.?)?/
	      nativeReplace.call(match[0], reCopy, function () {
	        for (i = 1; i < arguments.length - 2; i++) {
	          if (arguments[i] === undefined) match[i] = undefined;
	        }
	      });
	    }

	    return match;
	  };
	}

	var regexpExec = patchedExec;

	var SPECIES$3 = wellKnownSymbol('species');

	var REPLACE_SUPPORTS_NAMED_GROUPS = !fails(function () {
	  // #replace needs built-in support for named groups.
	  // #match works fine because it just return the exec results, even if it has
	  // a "grops" property.
	  var re = /./;
	  re.exec = function () {
	    var result = [];
	    result.groups = { a: '7' };
	    return result;
	  };
	  return ''.replace(re, '$<a>') !== '7';
	});

	// Chrome 51 has a buggy "split" implementation when RegExp#exec !== nativeExec
	// Weex JS has frozen built-in prototypes, so use try / catch wrapper
	var SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails(function () {
	  var re = /(?:)/;
	  var originalExec = re.exec;
	  re.exec = function () { return originalExec.apply(this, arguments); };
	  var result = 'ab'.split(re);
	  return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';
	});

	var fixRegexpWellKnownSymbolLogic = function (KEY, length, exec, sham) {
	  var SYMBOL = wellKnownSymbol(KEY);

	  var DELEGATES_TO_SYMBOL = !fails(function () {
	    // String methods call symbol-named RegEp methods
	    var O = {};
	    O[SYMBOL] = function () { return 7; };
	    return ''[KEY](O) != 7;
	  });

	  var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {
	    // Symbol-named RegExp methods call .exec
	    var execCalled = false;
	    var re = /a/;
	    re.exec = function () { execCalled = true; return null; };

	    if (KEY === 'split') {
	      // RegExp[@@split] doesn't call the regex's exec method, but first creates
	      // a new one. We need to return the patched regex when creating the new one.
	      re.constructor = {};
	      re.constructor[SPECIES$3] = function () { return re; };
	    }

	    re[SYMBOL]('');
	    return !execCalled;
	  });

	  if (
	    !DELEGATES_TO_SYMBOL ||
	    !DELEGATES_TO_EXEC ||
	    (KEY === 'replace' && !REPLACE_SUPPORTS_NAMED_GROUPS) ||
	    (KEY === 'split' && !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC)
	  ) {
	    var nativeRegExpMethod = /./[SYMBOL];
	    var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
	      if (regexp.exec === regexpExec) {
	        if (DELEGATES_TO_SYMBOL && !forceStringMethod) {
	          // The native String method already delegates to @@method (this
	          // polyfilled function), leasing to infinite recursion.
	          // We avoid it by directly calling the native @@method method.
	          return { done: true, value: nativeRegExpMethod.call(regexp, str, arg2) };
	        }
	        return { done: true, value: nativeMethod.call(str, regexp, arg2) };
	      }
	      return { done: false };
	    });
	    var stringMethod = methods[0];
	    var regexMethod = methods[1];

	    redefine(String.prototype, KEY, stringMethod);
	    redefine(RegExp.prototype, SYMBOL, length == 2
	      // 21.2.5.8 RegExp.prototype[@@replace](string, replaceValue)
	      // 21.2.5.11 RegExp.prototype[@@split](string, limit)
	      ? function (string, arg) { return regexMethod.call(string, this, arg); }
	      // 21.2.5.6 RegExp.prototype[@@match](string)
	      // 21.2.5.9 RegExp.prototype[@@search](string)
	      : function (string) { return regexMethod.call(string, this); }
	    );
	    if (sham) hide(RegExp.prototype[SYMBOL], 'sham', true);
	  }
	};

	var MATCH = wellKnownSymbol('match');

	// `IsRegExp` abstract operation
	// https://tc39.github.io/ecma262/#sec-isregexp
	var isRegexp = function (it) {
	  var isRegExp;
	  return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : classofRaw(it) == 'RegExp');
	};

	var SPECIES$4 = wellKnownSymbol('species');

	// `SpeciesConstructor` abstract operation
	// https://tc39.github.io/ecma262/#sec-speciesconstructor
	var speciesConstructor = function (O, defaultConstructor) {
	  var C = anObject(O).constructor;
	  var S;
	  return C === undefined || (S = anObject(C)[SPECIES$4]) == undefined ? defaultConstructor : aFunction$1(S);
	};

	// `String.prototype.{ codePointAt, at }` methods implementation
	var createMethod$3 = function (CONVERT_TO_STRING) {
	  return function ($this, pos) {
	    var S = String(requireObjectCoercible($this));
	    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 stringMultibyte = {
	  // `String.prototype.codePointAt` method
	  // https://tc39.github.io/ecma262/#sec-string.prototype.codepointat
	  codeAt: createMethod$3(false),
	  // `String.prototype.at` method
	  // https://github.com/mathiasbynens/String.prototype.at
	  charAt: createMethod$3(true)
	};

	var charAt = stringMultibyte.charAt;

	// `AdvanceStringIndex` abstract operation
	// https://tc39.github.io/ecma262/#sec-advancestringindex
	var advanceStringIndex = function (S, index, unicode) {
	  return index + (unicode ? charAt(S, index).length : 1);
	};

	// `RegExpExec` abstract operation
	// https://tc39.github.io/ecma262/#sec-regexpexec
	var regexpExecAbstract = function (R, S) {
	  var exec = R.exec;
	  if (typeof exec === 'function') {
	    var result = exec.call(R, S);
	    if (typeof result !== 'object') {
	      throw TypeError('RegExp exec method returned something other than an Object or null');
	    }
	    return result;
	  }

	  if (classofRaw(R) !== 'RegExp') {
	    throw TypeError('RegExp#exec called on incompatible receiver');
	  }

	  return regexpExec.call(R, S);
	};

	var arrayPush = [].push;
	var min$3 = Math.min;
	var MAX_UINT32 = 0xFFFFFFFF;

	// babel-minify transpiles RegExp('x', 'y') -> /x/y and it causes SyntaxError
	var SUPPORTS_Y = !fails(function () { return !RegExp(MAX_UINT32, 'y'); });

	// @@split logic
	fixRegexpWellKnownSymbolLogic('split', 2, function (SPLIT, nativeSplit, maybeCallNative) {
	  var internalSplit;
	  if (
	    'abbc'.split(/(b)*/)[1] == 'c' ||
	    'test'.split(/(?:)/, -1).length != 4 ||
	    'ab'.split(/(?:ab)*/).length != 2 ||
	    '.'.split(/(.?)(.?)/).length != 4 ||
	    '.'.split(/()()/).length > 1 ||
	    ''.split(/.?/).length
	  ) {
	    // based on es5-shim implementation, need to rework it
	    internalSplit = function (separator, limit) {
	      var string = String(requireObjectCoercible(this));
	      var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
	      if (lim === 0) return [];
	      if (separator === undefined) return [string];
	      // If `separator` is not a regex, use native split
	      if (!isRegexp(separator)) {
	        return nativeSplit.call(string, separator, lim);
	      }
	      var output = [];
	      var flags = (separator.ignoreCase ? 'i' : '') +
	                  (separator.multiline ? 'm' : '') +
	                  (separator.unicode ? 'u' : '') +
	                  (separator.sticky ? 'y' : '');
	      var lastLastIndex = 0;
	      // Make `global` and avoid `lastIndex` issues by working with a copy
	      var separatorCopy = new RegExp(separator.source, flags + 'g');
	      var match, lastIndex, lastLength;
	      while (match = regexpExec.call(separatorCopy, string)) {
	        lastIndex = separatorCopy.lastIndex;
	        if (lastIndex > lastLastIndex) {
	          output.push(string.slice(lastLastIndex, match.index));
	          if (match.length > 1 && match.index < string.length) arrayPush.apply(output, match.slice(1));
	          lastLength = match[0].length;
	          lastLastIndex = lastIndex;
	          if (output.length >= lim) break;
	        }
	        if (separatorCopy.lastIndex === match.index) separatorCopy.lastIndex++; // Avoid an infinite loop
	      }
	      if (lastLastIndex === string.length) {
	        if (lastLength || !separatorCopy.test('')) output.push('');
	      } else output.push(string.slice(lastLastIndex));
	      return output.length > lim ? output.slice(0, lim) : output;
	    };
	  // Chakra, V8
	  } else if ('0'.split(undefined, 0).length) {
	    internalSplit = function (separator, limit) {
	      return separator === undefined && limit === 0 ? [] : nativeSplit.call(this, separator, limit);
	    };
	  } else internalSplit = nativeSplit;

	  return [
	    // `String.prototype.split` method
	    // https://tc39.github.io/ecma262/#sec-string.prototype.split
	    function split(separator, limit) {
	      var O = requireObjectCoercible(this);
	      var splitter = separator == undefined ? undefined : separator[SPLIT];
	      return splitter !== undefined
	        ? splitter.call(separator, O, limit)
	        : internalSplit.call(String(O), separator, limit);
	    },
	    // `RegExp.prototype[@@split]` method
	    // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@split
	    //
	    // NOTE: This cannot be properly polyfilled in engines that don't support
	    // the 'y' flag.
	    function (regexp, limit) {
	      var res = maybeCallNative(internalSplit, regexp, this, limit, internalSplit !== nativeSplit);
	      if (res.done) return res.value;

	      var rx = anObject(regexp);
	      var S = String(this);
	      var C = speciesConstructor(rx, RegExp);

	      var unicodeMatching = rx.unicode;
	      var flags = (rx.ignoreCase ? 'i' : '') +
	                  (rx.multiline ? 'm' : '') +
	                  (rx.unicode ? 'u' : '') +
	                  (SUPPORTS_Y ? 'y' : 'g');

	      // ^(? + rx + ) is needed, in combination with some S slicing, to
	      // simulate the 'y' flag.
	      var splitter = new C(SUPPORTS_Y ? rx : '^(?:' + rx.source + ')', flags);
	      var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
	      if (lim === 0) return [];
	      if (S.length === 0) return regexpExecAbstract(splitter, S) === null ? [S] : [];
	      var p = 0;
	      var q = 0;
	      var A = [];
	      while (q < S.length) {
	        splitter.lastIndex = SUPPORTS_Y ? q : 0;
	        var z = regexpExecAbstract(splitter, SUPPORTS_Y ? S : S.slice(q));
	        var e;
	        if (
	          z === null ||
	          (e = min$3(toLength(splitter.lastIndex + (SUPPORTS_Y ? 0 : q)), S.length)) === p
	        ) {
	          q = advanceStringIndex(S, q, unicodeMatching);
	        } else {
	          A.push(S.slice(p, q));
	          if (A.length === lim) return A;
	          for (var i = 1; i <= z.length - 1; i++) {
	            A.push(z[i]);
	            if (A.length === lim) return A;
	          }
	          q = p = e;
	        }
	      }
	      A.push(S.slice(p));
	      return A;
	    }
	  ];
	}, !SUPPORTS_Y);

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

	  return _typeof(obj);
	}

	/**
	 * @author Nadim Basalamah <dimbslmh@gmail.com>
	 * @version: v1.1.0
	 * https://github.com/dimbslmh/bootstrap-table/tree/master/src/extensions/multiple-sort/bootstrap-table-multiple-sort.js
	 * Modification: ErwannNevou <https://github.com/ErwannNevou>
	 */

	var isSingleSort = false;
	var Utils = $.fn.bootstrapTable.utils;
	var bootstrap = {
	  bootstrap3: {
	    icons: {
	      plus: 'glyphicon-plus',
	      minus: 'glyphicon-minus',
	      sort: 'glyphicon-sort'
	    },
	    html: {
	      multipleSortModal: "\n        <div class=\"modal fade\" id=\"%s\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"%sLabel\" aria-hidden=\"true\">\n        <div class=\"modal-dialog\">\n            <div class=\"modal-content\">\n                <div class=\"modal-header\">\n                    <button type=\"button\" class=\"close\" data-dismiss=\"modal\" aria-label=\"Close\"><span aria-hidden=\"true\">&times;</span></button>\n                     <h4 class=\"modal-title\" id=\"%sLabel\">%s</h4>\n                </div>\n                <div class=\"modal-body\">\n                    <div class=\"bootstrap-table\">\n                        <div class=\"fixed-table-toolbar\">\n                            <div class=\"bars\">\n                                <div id=\"toolbar\">\n                                     <button id=\"add\" type=\"button\" class=\"btn btn-default\">%s %s</button>\n                                     <button id=\"delete\" type=\"button\" class=\"btn btn-default\" disabled>%s %s</button>\n                                </div>\n                            </div>\n                        </div>\n                        <div class=\"fixed-table-container\">\n                            <table id=\"multi-sort\" class=\"table\">\n                                <thead>\n                                    <tr>\n                                        <th></th>\n                                         <th><div class=\"th-inner\">%s</div></th>\n                                         <th><div class=\"th-inner\">%s</div></th>\n                                    </tr>\n                                </thead>\n                                <tbody></tbody>\n                            </table>\n                        </div>\n                    </div>\n                </div>\n                <div class=\"modal-footer\">\n                     <button type=\"button\" class=\"btn btn-default\" data-dismiss=\"modal\">%s</button>\n                     <button type=\"button\" class=\"btn btn-primary multi-sort-order-button\">%s</button>\n                </div>\n            </div>\n        </div>\n    </div>\n      ",
	      multipleSortButton: '<button class="multi-sort btn btn-default" type="button" data-toggle="modal" data-target="#%s" title="%s">%s</button>',
	      multipleSortSelect: '<select class="%s %s form-control">'
	    }
	  },
	  bootstrap4: {
	    icons: {
	      'plus': 'fa-plus',
	      'minus': 'fa-minus',
	      'sort': 'fa-sort'
	    },
	    html: {
	      multipleSortModal: "\n        <div class=\"modal fade\" id=\"%s\" tabindex=\"-1\" role=\"dialog\" aria-labelledby=\"%sLabel\" aria-hidden=\"true\">\n          <div class=\"modal-dialog\" role=\"document\">\n            <div class=\"modal-content\">\n              <div class=\"modal-header\">\n                <h5 class=\"modal-title\" id=\"%sLabel\">%s</h5>\n                <button type=\"button\" class=\"close\" data-dismiss=\"modal\" aria-label=\"Close\">\n                  <span aria-hidden=\"true\">&times;</span>\n                </button>\n              </div>\n              <div class=\"modal-body\">\n                <div class=\"bootstrap-table\">\n                        <div class=\"fixed-table-toolbar\">\n                            <div class=\"bars\">\n                                <div id=\"toolbar\" class=\"pb-3\">\n                                     <button id=\"add\" type=\"button\" class=\"btn btn-secondary\">%s %s</button>\n                                     <button id=\"delete\" type=\"button\" class=\"btn btn-secondary\" disabled>%s %s</button>\n                                </div>\n                            </div>\n                        </div>\n                        <div class=\"fixed-table-container\">\n                            <table id=\"multi-sort\" class=\"table\">\n                                <thead>\n                                    <tr>\n                                        <th></th>\n                                         <th><div class=\"th-inner\">%s</div></th>\n                                         <th><div class=\"th-inner\">%s</div></th>\n                                    </tr>\n                                </thead>\n                                <tbody></tbody>\n                            </table>\n                        </div>\n                    </div>\n              </div>\n              <div class=\"modal-footer\">\n                <button type=\"button\" class=\"btn btn-secondary\" data-dismiss=\"modal\">%s</button>\n                <button type=\"button\" class=\"btn btn-primary multi-sort-order-button\">%s</button>\n              </div>\n            </div>\n          </div>\n        </div>\n      ",
	      multipleSortButton: '<button class="multi-sort btn btn-secondary" type="button" data-toggle="modal" data-target="#%s" title="%s">%s</button>',
	      multipleSortSelect: '<select class="%s %s form-control">'
	    }
	  },
	  semantic: {
	    icons: {
	      'plus': 'fa-plus',
	      'minus': 'fa-minus',
	      'sort': 'fa-sort'
	    },
	    html: {
	      multipleSortModal: "\n        <div class=\"ui modal tiny\" id=\"%s\" aria-labelledby=\"%sLabel\" aria-hidden=\"true\">\n        <i class=\"close icon\"></i>\n        <div class=\"header\" id=\"%sLabel\">\n          %s\n        </div>\n        <div class=\"image content\">\n          <div class=\"bootstrap-table\">\n            <div class=\"fixed-table-toolbar\">\n                <div class=\"bars\">\n                  <div id=\"toolbar\" class=\"pb-3\">\n                    <button id=\"add\" type=\"button\" class=\"ui button\">%s %s</button>\n                    <button id=\"delete\" type=\"button\" class=\"ui button\" disabled>%s %s</button>\n                  </div>\n                </div>\n            </div>\n            <div class=\"fixed-table-container\">\n                <table id=\"multi-sort\" class=\"table\">\n                    <thead>\n                        <tr>\n                            <th></th>\n                            <th><div class=\"th-inner\">%s</div></th>\n                            <th><div class=\"th-inner\">%s</div></th>\n                        </tr>\n                    </thead>\n                    <tbody></tbody>\n                </table>\n            </div>\n          </div>\n        </div>\n        <div class=\"actions\">\n          <div class=\"ui button deny\">%s</div>\n          <div class=\"ui button approve multi-sort-order-button\">%s</div>\n        </div>\n      </div>\n      ",
	      multipleSortButton: '<button class="multi-sort ui button" type="button" data-toggle="modal" data-target="#%s" title="%s">%s</button>',
	      multipleSortSelect: '<select class="%s %s">'
	    }
	  },
	  materialize: {
	    icons: {
	      'plus': 'plus',
	      'minus': 'minus',
	      'sort': 'sort'
	    },
	    html: {
	      multipleSortModal: "\n        <div id=\"%s\" class=\"modal\" aria-labelledby=\"%sLabel\" aria-hidden=\"true\">\n          <div class=\"modal-content\" id=\"%sLabel\">\n            <h4>%s</h4>\n            <div class=\"bootstrap-table\">\n            <div class=\"fixed-table-toolbar\">\n                <div class=\"bars\">\n                  <div id=\"toolbar\" class=\"pb-3\">\n                    <button id=\"add\" type=\"button\" class=\"waves-effect waves-light btn\">%s %s</button>\n                    <button id=\"delete\" type=\"button\" class=\"waves-effect waves-light btn\" disabled>%s %s</button>\n                  </div>\n                </div>\n            </div>\n            <div class=\"fixed-table-container\">\n                <table id=\"multi-sort\" class=\"table\">\n                    <thead>\n                        <tr>\n                            <th></th>\n                            <th><div class=\"th-inner\">%s</div></th>\n                            <th><div class=\"th-inner\">%s</div></th>\n                        </tr>\n                    </thead>\n                    <tbody></tbody>\n                </table>\n            </div>\n          </div>\n          <div class=\"modal-footer\">\n            <a href=\"javascript:void(0)\" class=\"modal-close waves-effect waves-light btn\">%s</a>\n            <a href=\"javascript:void(0)\" class=\"modal-close waves-effect waves-light btn multi-sort-order-button\">%s</a>\n          </div>\n          </div>\n        </div>\n      ",
	      multipleSortButton: '<a href="#%s" class="multi-sort waves-effect waves-light btn modal-trigger" type="button" data-toggle="modal" title="%s">%s</a>',
	      multipleSortSelect: '<select class="%s %s browser-default">'
	    }
	  },
	  foundation: {
	    icons: {
	      'plus': 'fa-plus',
	      'minus': 'fa-minus',
	      'sort': 'fa-sort'
	    },
	    html: {
	      multipleSortModal: "\n        <div class=\"reveal\" id=\"%s\" data-reveal aria-labelledby=\"%sLabel\" aria-hidden=\"true\">\n            <div id=\"%sLabel\">\n              <h1>%s</h1>\n              <div class=\"bootstrap-table\">\n                <div class=\"fixed-table-toolbar\">\n                    <div class=\"bars\">\n                      <div id=\"toolbar\" class=\"padding-bottom-2\">\n                        <button id=\"add\" type=\"button\" class=\"waves-effect waves-light button\">%s %s</button>\n                        <button id=\"delete\" type=\"button\" class=\"waves-effect waves-light button\" disabled>%s %s</button>\n                      </div>\n                    </div>\n                </div>\n                <div class=\"fixed-table-container\">\n                    <table id=\"multi-sort\" class=\"table\">\n                        <thead>\n                            <tr>\n                                <th></th>\n                                <th><div class=\"th-inner\">%s</div></th>\n                                <th><div class=\"th-inner\">%s</div></th>\n                            </tr>\n                        </thead>\n                        <tbody></tbody>\n                    </table>\n                </div>\n              </div>\n              \n              <button class=\"waves-effect waves-light button\" data-close aria-label=\"Close modal\" type=\"button\">\n                <span aria-hidden=\"true\">%s</span>\n              </button>\n              <button class=\"waves-effect waves-light button multi-sort-order-button\" data-close aria-label=\"Order\" type=\"button\">\n                  <span aria-hidden=\"true\">%s</span>\n              </button>\n            </div>\n        </div>\n      ",
	      multipleSortButton: '<button class="button multi-sort" data-open="%s" title="%s">%s</button>',
	      multipleSortSelect: '<select class="%s %s browser-default">'
	    }
	  },
	  bulma: {
	    icons: {
	      'plus': 'fa-plus',
	      'minus': 'fa-minus',
	      'sort': 'fa-sort'
	    },
	    html: {
	      multipleSortModal: "\n        <div class=\"modal\" id=\"%s\" aria-labelledby=\"%sLabel\" aria-hidden=\"true\">\n          <div class=\"modal-background\"></div>\n          <div class=\"modal-content\" id=\"%sLabel\">\n            <div class=\"box\">\n            <h2>%s</h2>\n              <div class=\"bootstrap-table\">\n                  <div class=\"fixed-table-toolbar\">\n                      <div class=\"bars\">\n                        <div id=\"toolbar\" class=\"padding-bottom-2\">\n                          <button id=\"add\" type=\"button\" class=\"waves-effect waves-light button\">%s %s</button>\n                          <button id=\"delete\" type=\"button\" class=\"waves-effect waves-light button\" disabled>%s %s</button>\n                        </div>\n                      </div>\n                  </div>\n                  <div class=\"fixed-table-container\">\n                      <table id=\"multi-sort\" class=\"table\">\n                          <thead>\n                              <tr>\n                                  <th></th>\n                                  <th><div class=\"th-inner\">%s</div></th>\n                                  <th><div class=\"th-inner\">%s</div></th>\n                              </tr>\n                          </thead>\n                          <tbody></tbody>\n                      </table>\n                    </div>\n                </div>\n                <button type=\"button\" class=\"waves-effect waves-light button\" data-close>%s</button>\n                <button type=\"button\" class=\"waves-effect waves-light button multi-sort-order-button\" data-close>%s</button>\n            </div>\n          </div>\n        </div>\n      ",
	      multipleSortButton: '<button class="button multi-sort" data-target="%s" title="%s">%s</button>',
	      multipleSortSelect: '<select class="%s %s browser-default">'
	    }
	  }
	}[$.fn.bootstrapTable.theme];
	$.extend($.fn.bootstrapTable.defaults.icons, bootstrap.icons);
	$.extend($.fn.bootstrapTable.defaults.html, bootstrap.html);

	var showSortModal = function showSortModal(that) {
	  var _selector = that.sortModalSelector;

	  var _id = "#".concat(_selector);

	  var o = that.options;

	  if (!$(_id).hasClass('modal')) {
	    var sModal = Utils.sprintf(that.constants.html.multipleSortModal, _selector, _selector, _selector, that.options.formatMultipleSort(), Utils.sprintf(that.constants.html.icon, o.iconsPrefix, that.constants.icons.plus), that.options.formatAddLevel(), Utils.sprintf(that.constants.html.icon, o.iconsPrefix, that.constants.icons.minus), that.options.formatDeleteLevel(), that.options.formatColumn(), that.options.formatOrder(), that.options.formatCancel(), that.options.formatSort());
	    $('body').append($(sModal));
	    that.$sortModal = $(_id);
	    var $rows = that.$sortModal.find('tbody > tr');
	    that.$sortModal.off('click', '#add').on('click', '#add', function () {
	      var total = that.$sortModal.find('.multi-sort-name:first option').length;
	      var current = that.$sortModal.find('tbody tr').length;

	      if (current < total) {
	        current++;
	        that.addLevel();
	        that.setButtonStates();
	      }
	    });
	    that.$sortModal.off('click', '#delete').on('click', '#delete', function () {
	      var total = that.$sortModal.find('.multi-sort-name:first option').length;
	      var current = that.$sortModal.find('tbody tr').length;

	      if (current > 1 && current <= total) {
	        current--;
	        that.$sortModal.find('tbody tr:last').remove();
	        that.setButtonStates();
	      }
	    });
	    that.$sortModal.off('click', '.multi-sort-order-button').on('click', '.multi-sort-order-button', function () {
	      var $rows = that.$sortModal.find('tbody > tr');
	      var $alert = that.$sortModal.find('div.alert');
	      var fields = [];
	      var results = [];
	      that.options.sortPriority = $.map($rows, function (row) {
	        var $row = $(row);
	        var name = $row.find('.multi-sort-name').val();
	        var order = $row.find('.multi-sort-order').val();
	        fields.push(name);
	        return {
	          sortName: name,
	          sortOrder: order
	        };
	      });
	      var sorted_fields = fields.sort();

	      for (var i = 0; i < fields.length - 1; i++) {
	        if (sorted_fields[i + 1] === sorted_fields[i]) {
	          results.push(sorted_fields[i]);
	        }
	      }

	      if (results.length > 0) {
	        if ($alert.length === 0) {
	          $alert = "<div class=\"alert alert-danger\" role=\"alert\"><strong>".concat(that.options.formatDuplicateAlertTitle(), "</strong> ").concat(that.options.formatDuplicateAlertDescription(), "</div>");
	          $($alert).insertBefore(that.$sortModal.find('.bars'));
	        }
	      } else {
	        if ($alert.length === 1) {
	          $($alert).remove();
	        }

	        if ($.inArray($.fn.bootstrapTable.theme, ['bootstrap3', 'bootstrap4']) !== -1) {
	          that.$sortModal.modal('hide');
	        }

	        that.options.sortName = '';

	        if (that.options.sidePagination === 'server') {
	          var t = that.options.queryParams;

	          that.options.queryParams = function (params) {
	            params.multiSort = that.options.sortPriority;
	            return $.fn.bootstrapTable.utils.calculateObjectValue(that.options, t, [params]);
	          };

	          isSingleSort = false;
	          that.initServer(that.options.silentSort);
	          return;
	        }

	        that.onMultipleSort();
	      }
	    });

	    if (that.options.sortPriority === null || that.options.sortPriority.length === 0) {
	      if (that.options.sortName) {
	        that.options.sortPriority = [{
	          sortName: that.options.sortName,
	          sortOrder: that.options.sortOrder
	        }];
	      }
	    }

	    if (that.options.sortPriority !== null && that.options.sortPriority.length > 0) {
	      if ($rows.length < that.options.sortPriority.length && _typeof(that.options.sortPriority) === 'object') {
	        for (var i = 0; i < that.options.sortPriority.length; i++) {
	          that.addLevel(i, that.options.sortPriority[i]);
	        }
	      }
	    } else {
	      that.addLevel(0);
	    }

	    that.setButtonStates();
	  }
	};

	$.fn.bootstrapTable.methods.push('multipleSort');
	$.extend($.fn.bootstrapTable.defaults, {
	  showMultiSort: false,
	  showMultiSortButton: true,
	  sortPriority: null,
	  onMultipleSort: function onMultipleSort() {
	    return false;
	  }
	});
	$.extend($.fn.bootstrapTable.Constructor.EVENTS, {
	  'multiple-sort.bs.table': 'onMultipleSort'
	});
	$.extend($.fn.bootstrapTable.locales, {
	  formatMultipleSort: function formatMultipleSort() {
	    return 'Multiple Sort';
	  },
	  formatAddLevel: function formatAddLevel() {
	    return 'Add Level';
	  },
	  formatDeleteLevel: function formatDeleteLevel() {
	    return 'Delete Level';
	  },
	  formatColumn: function formatColumn() {
	    return 'Column';
	  },
	  formatOrder: function formatOrder() {
	    return 'Order';
	  },
	  formatSortBy: function formatSortBy() {
	    return 'Sort by';
	  },
	  formatThenBy: function formatThenBy() {
	    return 'Then by';
	  },
	  formatSort: function formatSort() {
	    return 'Sort';
	  },
	  formatCancel: function formatCancel() {
	    return 'Cancel';
	  },
	  formatDuplicateAlertTitle: function formatDuplicateAlertTitle() {
	    return 'Duplicate(s) detected!';
	  },
	  formatDuplicateAlertDescription: function formatDuplicateAlertDescription() {
	    return 'Please remove or change any duplicate column.';
	  },
	  formatSortOrders: function formatSortOrders() {
	    return {
	      asc: 'Ascending',
	      desc: 'Descending'
	    };
	  }
	});
	$.extend($.fn.bootstrapTable.defaults, $.fn.bootstrapTable.locales);
	var BootstrapTable = $.fn.bootstrapTable.Constructor;
	var _initToolbar = BootstrapTable.prototype.initToolbar;

	BootstrapTable.prototype.initToolbar = function () {
	  var _this = this;

	  this.showToolbar = this.showToolbar || this.options.showMultiSort;
	  var that = this;
	  var sortModalSelector = "sortModal_".concat(this.$el.attr('id'));
	  var sortModalId = "#".concat(sortModalSelector);
	  this.$sortModal = $(sortModalId);
	  this.sortModalSelector = sortModalSelector;

	  if (that.options.sortPriority !== null) {
	    that.onMultipleSort();
	  }

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

	  _initToolbar.apply(this, Array.prototype.slice.apply(args));

	  if (that.options.sidePagination === 'server' && !isSingleSort && that.options.sortPriority !== null) {
	    var t = that.options.queryParams;

	    that.options.queryParams = function (params) {
	      params.multiSort = that.options.sortPriority;
	      return t(params);
	    };
	  }

	  if (this.options.showMultiSort) {
	    var $btnGroup = this.$toolbar.find('>.' + that.constants.classes.buttonsGroup.split(' ').join('.')).first();
	    var $multiSortBtn = this.$toolbar.find('div.multi-sort');
	    var o = that.options;

	    if (!$multiSortBtn.length && this.options.showMultiSortButton) {
	      $multiSortBtn = Utils.sprintf(that.constants.html.multipleSortButton, that.sortModalSelector, this.options.formatMultipleSort(), Utils.sprintf(that.constants.html.icon, o.iconsPrefix, o.icons.sort));
	      $btnGroup.append($multiSortBtn);

	      if ($.fn.bootstrapTable.theme === 'semantic') {
	        this.$toolbar.find('.multi-sort').on('click', function () {
	          $(sortModalId).modal('show');
	        });
	      } else if ($.fn.bootstrapTable.theme === 'materialize') {
	        this.$toolbar.find('.multi-sort').on('click', function () {
	          $(sortModalId).modal();
	        });
	      } else if ($.fn.bootstrapTable.theme === 'foundation') {
	        this.$toolbar.find('.multi-sort').on('click', function () {
	          if (!_this.foundationModal) {
	            // eslint-disable-next-line no-undef
	            _this.foundationModal = new Foundation.Reveal($(sortModalId));
	          }

	          _this.foundationModal.open();
	        });
	      } else if ($.fn.bootstrapTable.theme === 'bulma') {
	        this.$toolbar.find('.multi-sort').on('click', function () {
	          $('html').toggleClass('is-clipped');
	          $(sortModalId).toggleClass('is-active');
	          $('button[data-close]').one('click', function () {
	            $('html').toggleClass('is-clipped');
	            $(sortModalId).toggleClass('is-active');
	          });
	        });
	      }

	      showSortModal(that);
	    }

	    this.$el.on('sort.bs.table', function () {
	      isSingleSort = true;
	    });
	    this.$el.on('multiple-sort.bs.table', function () {
	      isSingleSort = false;
	    });
	    this.$el.on('load-success.bs.table', function () {
	      if (!isSingleSort && that.options.sortPriority !== null && _typeof(that.options.sortPriority) === 'object' && that.options.sidePagination !== 'server') {
	        that.onMultipleSort();
	      }
	    });
	    this.$el.on('column-switch.bs.table', function (field, checked) {
	      for (var i = 0; i < that.options.sortPriority.length; i++) {
	        if (that.options.sortPriority[i].sortName === checked) {
	          that.options.sortPriority.splice(i, 1);
	        }
	      }

	      that.assignSortableArrows();
	      that.$sortModal.remove();
	      showSortModal(that);
	    });
	    this.$el.on('reset-view.bs.table', function () {
	      if (!isSingleSort && that.options.sortPriority !== null && _typeof(that.options.sortPriority) === 'object') {
	        that.assignSortableArrows();
	      }
	    });
	  }
	};

	BootstrapTable.prototype.multipleSort = function () {
	  var that = this;

	  if (!isSingleSort && that.options.sortPriority !== null && _typeof(that.options.sortPriority) === 'object' && that.options.sidePagination !== 'server') {
	    that.onMultipleSort();
	  }
	};

	BootstrapTable.prototype.onMultipleSort = function () {
	  var that = this;

	  var cmp = function cmp(x, y) {
	    return x > y ? 1 : x < y ? -1 : 0;
	  };

	  var arrayCmp = function arrayCmp(a, b) {
	    var arr1 = [];
	    var arr2 = [];

	    for (var i = 0; i < that.options.sortPriority.length; i++) {
	      var order = that.options.sortPriority[i].sortOrder === 'desc' ? -1 : 1;
	      var aa = a[that.options.sortPriority[i].sortName];
	      var bb = b[that.options.sortPriority[i].sortName];

	      if (aa === undefined || aa === null) {
	        aa = '';
	      }

	      if (bb === undefined || bb === null) {
	        bb = '';
	      }

	      if ($.isNumeric(aa) && $.isNumeric(bb)) {
	        aa = parseFloat(aa);
	        bb = parseFloat(bb);
	      }

	      if (typeof aa !== 'string') {
	        aa = aa.toString();
	      }

	      arr1.push(order * cmp(aa, bb));
	      arr2.push(order * cmp(bb, aa));
	    }

	    return cmp(arr1, arr2);
	  };

	  this.data.sort(function (a, b) {
	    return arrayCmp(a, b);
	  });
	  this.initBody();
	  this.assignSortableArrows();
	  this.trigger('multiple-sort');
	};

	BootstrapTable.prototype.addLevel = function (index, sortPriority) {
	  var text = index === 0 ? this.options.formatSortBy() : this.options.formatThenBy();
	  this.$sortModal.find('tbody').append($('<tr>').append($('<td>').text(text)).append($('<td>').append($(Utils.sprintf(this.constants.html.multipleSortSelect, this.constants.classes.paginationDropdown, 'multi-sort-name')))).append($('<td>').append($(Utils.sprintf(this.constants.html.multipleSortSelect, this.constants.classes.paginationDropdown, 'multi-sort-order')))));
	  var $multiSortName = this.$sortModal.find('.multi-sort-name').last();
	  var $multiSortOrder = this.$sortModal.find('.multi-sort-order').last();
	  $.each(this.columns, function (i, column) {
	    if (column.sortable === false || column.visible === false) {
	      return true;
	    }

	    $multiSortName.append("<option value=\"".concat(column.field, "\">").concat(column.title, "</option>"));
	  });
	  $.each(this.options.formatSortOrders(), function (value, order) {
	    $multiSortOrder.append("<option value=\"".concat(value, "\">").concat(order, "</option>"));
	  });

	  if (sortPriority !== undefined) {
	    $multiSortName.find("option[value=\"".concat(sortPriority.sortName, "\"]")).attr('selected', true);
	    $multiSortOrder.find("option[value=\"".concat(sortPriority.sortOrder, "\"]")).attr('selected', true);
	  }
	};

	BootstrapTable.prototype.assignSortableArrows = function () {
	  var that = this;
	  var headers = that.$header.find('th');

	  for (var i = 0; i < headers.length; i++) {
	    for (var c = 0; c < that.options.sortPriority.length; c++) {
	      if ($(headers[i]).data('field') === that.options.sortPriority[c].sortName) {
	        $(headers[i]).find('.sortable').removeClass('desc asc').addClass(that.options.sortPriority[c].sortOrder);
	      }
	    }
	  }
	};

	BootstrapTable.prototype.setButtonStates = function () {
	  var total = this.$sortModal.find('.multi-sort-name:first option').length;
	  var current = this.$sortModal.find('tbody tr').length;

	  if (current === total) {
	    this.$sortModal.find('#add').attr('disabled', 'disabled');
	  }

	  if (current > 1) {
	    this.$sortModal.find('#delete').removeAttr('disabled');
	  }

	  if (current < total) {
	    this.$sortModal.find('#add').removeAttr('disabled');
	  }

	  if (current === 1) {
	    this.$sortModal.find('#delete').attr('disabled', 'disabled');
	  }
	};

}));