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on this file since 571e0df was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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1 | var baseFlatten = require('./_baseFlatten'),
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2 | toInteger = require('./toInteger');
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3 |
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4 | /**
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5 | * Recursively flatten `array` up to `depth` times.
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6 | *
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7 | * @static
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8 | * @memberOf _
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9 | * @since 4.4.0
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10 | * @category Array
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11 | * @param {Array} array The array to flatten.
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12 | * @param {number} [depth=1] The maximum recursion depth.
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13 | * @returns {Array} Returns the new flattened array.
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14 | * @example
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15 | *
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16 | * var array = [1, [2, [3, [4]], 5]];
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17 | *
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18 | * _.flattenDepth(array, 1);
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19 | * // => [1, 2, [3, [4]], 5]
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20 | *
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21 | * _.flattenDepth(array, 2);
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22 | * // => [1, 2, 3, [4], 5]
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23 | */
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24 | function flattenDepth(array, depth) {
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25 | var length = array == null ? 0 : array.length;
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26 | if (!length) {
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27 | return [];
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28 | }
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29 | depth = depth === undefined ? 1 : toInteger(depth);
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30 | return baseFlatten(array, depth);
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31 | }
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32 |
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33 | module.exports = flattenDepth;
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