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