Public/BJUI/plugins/bootstrapSelect/bootstrap-select.js

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if (!Object.keys) {
  Object.keys = (function () {
    'use strict';
    var hasOwnProperty = Object.prototype.hasOwnProperty,
        hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'),
        dontEnums = [
          'toString',
          'toLocaleString',
          'valueOf',
          'hasOwnProperty',
          'isPrototypeOf',
          'propertyIsEnumerable',
          'constructor'
        ],
        dontEnumsLength = dontEnums.length;

    return function (obj) {
      if (typeof obj !== 'object' && (typeof obj !== 'function' || obj === null)) {
        throw new TypeError('Object.keys called on non-object');
      }

      var result = [], prop, i;

      for (prop in obj) {
        if (hasOwnProperty.call(obj, prop)) {
          result.push(prop);
        }
      }

      if (hasDontEnumBug) {
        for (i = 0; i < dontEnumsLength; i++) {
          if (hasOwnProperty.call(obj, dontEnums[i])) {
            result.push(dontEnums[i]);
          }
        }
      }
      return result;
    };
  }());
}

(function ($) {
  'use strict';

  // Case insensitive search
  $.expr[':'].icontains = function (obj, index, meta) {
    return icontains($(obj).text(), meta[3]);
  };

  // Case and accent insensitive search
  $.expr[':'].aicontains = function (obj, index, meta) {
    return icontains($(obj).data('normalizedText') || $(obj).text(), meta[3]);
  };

  /**
   * Actual implementation of the case insensitive search.
   * @access private
   * @param {String} haystack
   * @param {String} needle
   * @returns {boolean}