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46 lines
1010 B
46 lines
1010 B
"use strict"; |
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/** |
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* Copyright (c) 2013-present, Facebook, Inc. |
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* |
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* This source code is licensed under the MIT license found in the |
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* LICENSE file in the root directory of this source tree. |
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* |
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* @typechecks |
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* |
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*/ |
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/** |
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* Returns a flattened array that represents the DFS traversal of the supplied |
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* input array. For example: |
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* |
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* var deep = ["a", ["b", "c"], "d", {"e": [1, 2]}, [["f"], "g"]]; |
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* var flat = flattenArray(deep); |
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* console.log(flat); |
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* > ["a", "b", "c", "d", {"e": [1, 2]}, "f", "g"]; |
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* |
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* @see https://github.com/jonschlinkert/arr-flatten |
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* @copyright 2014-2015 Jon Schlinkert |
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* @license MIT |
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*/ |
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function flattenArray(array) { |
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var result = []; |
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flatten(array, result); |
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return result; |
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} |
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function flatten(array, result) { |
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var length = array.length; |
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var ii = 0; |
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while (length--) { |
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var current = array[ii++]; |
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if (Array.isArray(current)) { |
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flatten(current, result); |
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} else { |
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result.push(current); |
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} |
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} |
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} |
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module.exports = flattenArray; |