define(['./flatten', './_overRest', './_setToString'], function(flatten, overRest, setToString) {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /**
   * A specialized version of `baseRest` which flattens the rest array.
   *
   * @private
   * @param {Function} func The function to apply a rest parameter to.
   * @returns {Function} Returns the new function.
   */
  function flatRest(func) {
    return setToString(overRest(func, undefined, flatten), func + '');
  }

  return flatRest;
});