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define(['./_baseFlatten', './map', './toInteger'], function(baseFlatten, map, toInteger) {
  /** Used as a safe reference for `undefined` in pre-ES5 environments. */  var undefined;
  /**   * This method is like `_.flatMap` except that it recursively flattens the   * mapped results up to `depth` times.   *   * @static   * @memberOf _   * @since 4.7.0   * @category Collection   * @param {Array|Object} collection The collection to iterate over.   * @param {Function} [iteratee=_.identity] The function invoked per iteration.   * @param {number} [depth=1] The maximum recursion depth.   * @returns {Array} Returns the new flattened array.   * @example   *   * function duplicate(n) {   *   return [[[n, n]]];   * }   *   * _.flatMapDepth([1, 2], duplicate, 2);   * // => [[1, 1], [2, 2]]   */  function flatMapDepth(collection, iteratee, depth) {    depth = depth === undefined ? 1 : toInteger(depth);    return baseFlatten(map(collection, iteratee), depth);  }
  return flatMapDepth;});