12345678910111213141516171819202122
define([], function() {
  /**   * Converts `set` to its value-value pairs.   *   * @private   * @param {Object} set The set to convert.   * @returns {Array} Returns the value-value pairs.   */  function setToPairs(set) {    var index = -1,        result = Array(set.size);
    set.forEach(function(value) {      result[++index] = [value, value];    });    return result;  }
  return setToPairs;});