bootstrap-table/dist/extensions/natural-sorting/bootstrap-table-natural-sorting.js

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

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

  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 hasOwnProperty = {}.hasOwnProperty;

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

  var toString = {}.toString;

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

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

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

  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 inheritIfRequired = function (that, target, C) {
    var S = target.constructor;
    var P;
    if (S !== C && typeof S == 'function' && (P = S.prototype) !== C.prototype && isObject(P) && objectSetPrototypeOf) {
      objectSetPrototypeOf(that, P);
    } return that;
  };

  // 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");
  };

  // 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 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 hiddenKeys = {};

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

  var objectGetOwnPropertyNames = {
  	f: f
  };

  // 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$1 = NASHORN_BUG ? function propertyIsEnumerable(V) {
    var descriptor = nativeGetOwnPropertyDescriptor(this, V);
    return !!descriptor && descriptor.enumerable;
  } : nativePropertyIsEnumerable;

  var objectPropertyIsEnumerable = {
  	f: f$1
  };

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

  var nativeDefineProperty = Object.defineProperty;

  var f$3 = 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$3
  };

  // a string of all valid unicode whitespaces
  // eslint-disable-next-line max-len
  var whitespaces = '\x09\x0A\x0B\x0C\x0D\x20\xA0\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 + '*$');

  // 1 -> String#trimStart
  // 2 -> String#trimEnd
  // 3 -> String#trim
  var stringTrim = function (string, TYPE) {
    string = String(requireObjectCoercible(string));
    if (TYPE & 1) string = string.replace(ltrim, '');
    if (TYPE & 2) string = string.replace(rtrim, '');
    return string;
  };

  // 19.1.2.14 / 15.2.3.14 Object.keys(O)



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

  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;

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

  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, 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 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));
  };

  // 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;

  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 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 getOwnPropertyNames = objectGetOwnPropertyNames.f;
  var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
  var defineProperty = objectDefineProperty.f;

  var NUMBER = 'Number';
  var NativeNumber = global[NUMBER];
  var NumberPrototype = NativeNumber.prototype;

  // Opera ~12 has broken Object#toString
  var BROKEN_CLASSOF = classofRaw(objectCreate(NumberPrototype)) == NUMBER;
  var NATIVE_TRIM = 'trim' in String.prototype;

  // `ToNumber` abstract operation
  // https://tc39.github.io/ecma262/#sec-tonumber
  var toNumber = function (argument) {
    var it = toPrimitive(argument, false);
    var first, third, radix, maxCode, digits, length, i, code;
    if (typeof it == 'string' && it.length > 2) {
      it = NATIVE_TRIM ? it.trim() : stringTrim(it, 3);
      first = it.charCodeAt(0);
      if (first === 43 || first === 45) {
        third = it.charCodeAt(2);
        if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix
      } else if (first === 48) {
        switch (it.charCodeAt(1)) {
          case 66: case 98: radix = 2; maxCode = 49; break; // fast equal of /^0b[01]+$/i
          case 79: case 111: radix = 8; maxCode = 55; break; // fast equal of /^0o[0-7]+$/i
          default: return +it;
        }
        digits = it.slice(2);
        length = digits.length;
        for (i = 0; i < length; i++) {
          code = digits.charCodeAt(i);
          // parseInt parses a string to a first unavailable symbol
          // but ToNumber should return NaN if a string contains unavailable symbols
          if (code < 48 || code > maxCode) return NaN;
        } return parseInt(digits, radix);
      }
    } return +it;
  };

  // `Number` constructor
  // https://tc39.github.io/ecma262/#sec-number-constructor
  if (isForced_1(NUMBER, !NativeNumber(' 0o1') || !NativeNumber('0b1') || NativeNumber('+0x1'))) {
    var NumberWrapper = function Number(value) {
      var it = arguments.length < 1 ? 0 : value;
      var that = this;
      return that instanceof NumberWrapper
        // check on 1..constructor(foo) case
        && (BROKEN_CLASSOF ? fails(function () { NumberPrototype.valueOf.call(that); }) : classofRaw(that) != NUMBER)
          ? inheritIfRequired(new NativeNumber(toNumber(it)), that, NumberWrapper) : toNumber(it);
    };
    for (var keys = descriptors ? getOwnPropertyNames(NativeNumber) : (
      // ES3:
      'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
      // ES2015 (in case, if modules with ES2015 Number statics required before):
      'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +
      'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger'
    ).split(','), j = 0, key; keys.length > j; j++) {
      if (has(NativeNumber, key = keys[j]) && !has(NumberWrapper, key)) {
        defineProperty(NumberWrapper, key, getOwnPropertyDescriptor(NativeNumber, key));
      }
    }
    NumberWrapper.prototype = NumberPrototype;
    NumberPrototype.constructor = NumberWrapper;
    redefine(global, NUMBER, NumberWrapper);
  }

  var nativeParseInt = global.parseInt;


  var hex = /^[-+]?0[xX]/;
  var FORCED = nativeParseInt(whitespaces + '08') !== 8 || nativeParseInt(whitespaces + '0x16') !== 22;

  var _parseInt = FORCED ? function parseInt(str, radix) {
    var string = stringTrim(String(str), 3);
    return nativeParseInt(string, (radix >>> 0) || (hex.test(string) ? 16 : 10));
  } : nativeParseInt;

  var f$4 = Object.getOwnPropertySymbols;

  var objectGetOwnPropertySymbols = {
  	f: f$4
  };

  var Reflect = global.Reflect;

  // all object keys, includes non-enumerable and symbols
  var ownKeys = Reflect && 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 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;
    } 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$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);
    }
  };

  // `parseInt` method
  // https://tc39.github.io/ecma262/#sec-parseint-string-radix
  _export({ global: true, forced: parseInt != _parseInt }, {
    parseInt: _parseInt
  });

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

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

  var Symbol = global.Symbol;


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

  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');
  };

  // `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.unicode) result += 'u';
    if (that.sticky) result += 'y';
    return result;
  };

  var path = global;

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

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

  var SPECIES = wellKnownSymbol('species');

  var setSpecies = function (CONSTRUCTOR_NAME) {
    var C = getBuiltIn(CONSTRUCTOR_NAME);
    var defineProperty = objectDefineProperty.f;
    if (descriptors && C && !C[SPECIES]) defineProperty(C, SPECIES, {
      configurable: true,
      get: function () { return this; }
    });
  };

  var MATCH$1 = wellKnownSymbol('match');



  var defineProperty$1 = objectDefineProperty.f;
  var getOwnPropertyNames$1 = objectGetOwnPropertyNames.f;




  var NativeRegExp = global.RegExp;
  var RegExpPrototype = NativeRegExp.prototype;
  var re1 = /a/g;
  var re2 = /a/g;

  // "new" should create a new object, old webkit bug
  var CORRECT_NEW = new NativeRegExp(re1) !== re1;

  var FORCED$1 = isForced_1('RegExp', descriptors && (!CORRECT_NEW || fails(function () {
    re2[MATCH$1] = false;
    // RegExp constructor can alter flags and IsRegExp works correct with @@match
    return NativeRegExp(re1) != re1 || NativeRegExp(re2) == re2 || NativeRegExp(re1, 'i') != '/a/i';
  })));

  // `RegExp` constructor
  // https://tc39.github.io/ecma262/#sec-regexp-constructor
  if (FORCED$1) {
    var RegExpWrapper = function RegExp(pattern, flags) {
      var thisIsRegExp = this instanceof RegExpWrapper;
      var patternIsRegExp = isRegexp(pattern);
      var flagsAreUndefined = flags === undefined;
      return !thisIsRegExp && patternIsRegExp && pattern.constructor === RegExpWrapper && flagsAreUndefined ? pattern
        : inheritIfRequired(CORRECT_NEW
          ? new NativeRegExp(patternIsRegExp && !flagsAreUndefined ? pattern.source : pattern, flags)
          : NativeRegExp((patternIsRegExp = pattern instanceof RegExpWrapper)
            ? pattern.source
            : pattern, patternIsRegExp && flagsAreUndefined ? regexpFlags.call(pattern) : flags)
        , thisIsRegExp ? this : RegExpPrototype, RegExpWrapper);
    };
    var proxy = function (key) {
      key in RegExpWrapper || defineProperty$1(RegExpWrapper, key, {
        configurable: true,
        get: function () { return NativeRegExp[key]; },
        set: function (it) { NativeRegExp[key] = it; }
      });
    };
    var keys$1 = getOwnPropertyNames$1(NativeRegExp);
    var i = 0;
    while (i < keys$1.length) proxy(keys$1[i++]);
    RegExpPrototype.constructor = RegExpWrapper;
    RegExpWrapper.prototype = RegExpPrototype;
    redefine(global, 'RegExp', RegExpWrapper);
  }

  // https://tc39.github.io/ecma262/#sec-get-regexp-@@species
  setSpecies('RegExp');

  var TO_STRING = 'toString';
  var nativeToString = /./[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);
      return '/'.concat(R.source, '/',
        'flags' in R ? R.flags : !descriptors && R instanceof RegExp ? regexpFlags.call(R) : undefined);
    }, { unsafe: true });
  }

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

  // 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;
  };

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

  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;

  // `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 SPECIES$1 = 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$1] = 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 max$1 = Math.max;
  var min$2 = Math.min;
  var floor$1 = Math.floor;
  var SUBSTITUTION_SYMBOLS = /\$([$&`']|\d\d?|<[^>]*>)/g;
  var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&`']|\d\d?)/g;

  var maybeToString = function (it) {
    return it === undefined ? it : String(it);
  };

  // @@replace logic
  fixRegexpWellKnownSymbolLogic(
    'replace',
    2,
    function (REPLACE, nativeReplace, maybeCallNative) {
      return [
        // `String.prototype.replace` method
        // https://tc39.github.io/ecma262/#sec-string.prototype.replace
        function replace(searchValue, replaceValue) {
          var O = requireObjectCoercible(this);
          var replacer = searchValue == undefined ? undefined : searchValue[REPLACE];
          return replacer !== undefined
            ? replacer.call(searchValue, O, replaceValue)
            : nativeReplace.call(String(O), searchValue, replaceValue);
        },
        // `RegExp.prototype[@@replace]` method
        // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@replace
        function (regexp, replaceValue) {
          var res = maybeCallNative(nativeReplace, regexp, this, replaceValue);
          if (res.done) return res.value;

          var rx = anObject(regexp);
          var S = String(this);

          var functionalReplace = typeof replaceValue === 'function';
          if (!functionalReplace) replaceValue = String(replaceValue);

          var global = rx.global;
          if (global) {
            var fullUnicode = rx.unicode;
            rx.lastIndex = 0;
          }
          var results = [];
          while (true) {
            var result = regexpExecAbstract(rx, S);
            if (result === null) break;

            results.push(result);
            if (!global) break;

            var matchStr = String(result[0]);
            if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
          }

          var accumulatedResult = '';
          var nextSourcePosition = 0;
          for (var i = 0; i < results.length; i++) {
            result = results[i];

            var matched = String(result[0]);
            var position = max$1(min$2(toInteger(result.index), S.length), 0);
            var captures = [];
            // NOTE: This is equivalent to
            //   captures = result.slice(1).map(maybeToString)
            // but for some reason `nativeSlice.call(result, 1, result.length)` (called in
            // the slice polyfill when slicing native arrays) "doesn't work" in safari 9 and
            // causes a crash (https://pastebin.com/N21QzeQA) when trying to debug it.
            for (var j = 1; j < result.length; j++) captures.push(maybeToString(result[j]));
            var namedCaptures = result.groups;
            if (functionalReplace) {
              var replacerArgs = [matched].concat(captures, position, S);
              if (namedCaptures !== undefined) replacerArgs.push(namedCaptures);
              var replacement = String(replaceValue.apply(undefined, replacerArgs));
            } else {
              replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);
            }
            if (position >= nextSourcePosition) {
              accumulatedResult += S.slice(nextSourcePosition, position) + replacement;
              nextSourcePosition = position + matched.length;
            }
          }
          return accumulatedResult + S.slice(nextSourcePosition);
        }
      ];

      // https://tc39.github.io/ecma262/#sec-getsubstitution
      function getSubstitution(matched, str, position, captures, namedCaptures, replacement) {
        var tailPos = position + matched.length;
        var m = captures.length;
        var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;
        if (namedCaptures !== undefined) {
          namedCaptures = toObject(namedCaptures);
          symbols = SUBSTITUTION_SYMBOLS;
        }
        return nativeReplace.call(replacement, symbols, function (match, ch) {
          var capture;
          switch (ch.charAt(0)) {
            case '$': return '$';
            case '&': return matched;
            case '`': return str.slice(0, position);
            case "'": return str.slice(tailPos);
            case '<':
              capture = namedCaptures[ch.slice(1, -1)];
              break;
            default: // \d\d?
              var n = +ch;
              if (n === 0) return match;
              if (n > m) {
                var f = floor$1(n / 10);
                if (f === 0) return match;
                if (f <= m) return captures[f - 1] === undefined ? ch.charAt(1) : captures[f - 1] + ch.charAt(1);
                return match;
              }
              capture = captures[n - 1];
          }
          return capture === undefined ? '' : capture;
        });
      }
    }
  );

  /**
   * @author: Brian Huisman
   * @webSite: http://www.greywyvern.com
   * JS functions to allow natural sorting on bootstrap-table columns
   * add data-sorter="alphanum" or data-sorter="numericOnly" to any th
   *
   * @update Dennis Hernández <http://djhvscf.github.io/Blog>
   * @update Duane May
   */
  function alphanum(a, b) {
    function chunkify(t) {
      var tz = [];
      var y = -1;
      var n = 0;

      for (var i = 0; i <= t.length; i++) {
        var char = t.charAt(i);
        var charCode = char.charCodeAt(0);
        var m = charCode === 46 || charCode >= 48 && charCode <= 57;

        if (m !== n) {
          tz[++y] = '';
          n = m;
        }

        tz[y] += char;
      }

      return tz;
    }

    function stringfy(v) {
      if (typeof v === 'number') {
        v = "".concat(v);
      }

      if (!v) {
        v = '';
      }

      return v;
    }

    var aa = chunkify(stringfy(a));
    var bb = chunkify(stringfy(b));

    for (var x = 0; aa[x] && bb[x]; x++) {
      if (aa[x] !== bb[x]) {
        var c = Number(aa[x]);
        var d = Number(bb[x]);

        if (c === aa[x] && d === bb[x]) {
          return c - d;
        }

        return aa[x] > bb[x] ? 1 : -1;
      }
    }

    return aa.length - bb.length;
  }

  function numericOnly(a, b) {
    function stripNonNumber(s) {
      s = s.replace(new RegExp(/[^0-9]/g), '');
      return parseInt(s, 10);
    }

    return stripNonNumber(a) - stripNonNumber(b);
  }

  var bootstrapTableNaturalSorting = {
    alphanum: alphanum,
    numericOnly: numericOnly
  };

  return bootstrapTableNaturalSorting;

}));