1  var baseFlatten = require('./_baseFlatten'),
 2      map = require('./map'),
 3      toInteger = require('./toInteger');
 4  
 5  /**
 6   * This method is like `_.flatMap` except that it recursively flattens the
 7   * mapped results up to `depth` times.
 8   *
 9   * @static
10   * @memberOf _
11   * @since 4.7.0
12   * @category Collection
13   * @param {Array|Object} collection The collection to iterate over.
14   * @param {Function} [iteratee=_.identity] The function invoked per iteration.
15   * @param {number} [depth=1] The maximum recursion depth.
16   * @returns {Array} Returns the new flattened array.
17   * @example
18   *
19   * function duplicate(n) {
20   *   return [[[n, n]]];
21   * }
22   *
23   * _.flatMapDepth([1, 2], duplicate, 2);
24   * // => [[1, 1], [2, 2]]
25   */
26  function flatMapDepth(collection, iteratee, depth) {
27    depth = depth === undefined ? 1 : toInteger(depth);
28    return baseFlatten(map(collection, iteratee), depth);
29  }
30  
31  module.exports = flatMapDepth;