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define([], function() {
  /** Used as a safe reference for `undefined` in pre-ES5 environments. */  var undefined;
  /**   * This base implementation of `_.zipObject` which assigns values using `assignFunc`.   *   * @private   * @param {Array} props The property identifiers.   * @param {Array} values The property values.   * @param {Function} assignFunc The function to assign values.   * @returns {Object} Returns the new object.   */  function baseZipObject(props, values, assignFunc) {    var index = -1,        length = props.length,        valsLength = values.length,        result = {};
    while (++index < length) {      var value = index < valsLength ? values[index] : undefined;      assignFunc(result, props[index], value);    }    return result;  }
  return baseZipObject;});