7f2dd5260f
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34 lines
787 B
JavaScript
34 lines
787 B
JavaScript
var baseFlatten = require('./_baseFlatten'),
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toInteger = require('./toInteger');
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/**
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* Recursively flatten `array` up to `depth` times.
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*
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* @static
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* @memberOf _
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* @since 4.4.0
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* @category Array
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* @param {Array} array The array to flatten.
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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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* var array = [1, [2, [3, [4]], 5]];
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*
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* _.flattenDepth(array, 1);
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* // => [1, 2, [3, [4]], 5]
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*
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* _.flattenDepth(array, 2);
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* // => [1, 2, 3, [4], 5]
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*/
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function flattenDepth(array, depth) {
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var length = array == null ? 0 : array.length;
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if (!length) {
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return [];
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}
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depth = depth === undefined ? 1 : toInteger(depth);
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return baseFlatten(array, depth);
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}
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module.exports = flattenDepth;
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