22 lines
519 B
JavaScript
22 lines
519 B
JavaScript
import isArray from './is-array';
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/**
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* Flattens `array` a single level deep.
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*
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* @param {Array} arr The array to flatten.
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* @return {Array} Returns the new flattened array.
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* @example
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*
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* flatten([1, [2, [3, [4]], 5]]); // => [1, 2, [3, [4]], 5]
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*/
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var flatten = function (arr) {
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if (!isArray(arr)) {
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return [];
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}
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var rst = [];
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for (var i = 0; i < arr.length; i++) {
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rst = rst.concat(arr[i]);
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}
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return rst;
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};
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export default flatten;
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//# sourceMappingURL=flatten.js.map
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