time-to-botec

Benchmark sampling in different programming languages
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flatMapDepth.js (901B)

      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;