text: import invoker from './invoker.js';
  
  
  /**
   * The lower case version of a string.
   *
   * @func
   * @memberOf R
   * @since v0.9.0
   * @category String
   * @sig String -> String
   * @param {String} str The string to lower case.
   * @return {String} The lower case version of `str`.
   * @see R.toUpper
   * @example
   *
   *      R.toLower('XYZ'); //=> 'xyz'
   */
  var toLower = invoker(0, 'toLowerCase');
  export default toLower;
  