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https://github.com/facebook/react-native.git
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Joshua AlvaradoandLorenzo Sciandra
bcae5b7d8f
Summary: Add flow strict typing to the isEmpty lib Reviewed By: wcheng86 Differential Revision: D9200520 fbshipit-source-id: ac5717216199166e7485abcdfcba03ab2bbe90d2
30 lines
531 B
JavaScript
30 lines
531 B
JavaScript
/**
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* Copyright (c) 2015-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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* @flow strict
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* @format
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*/
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'use strict';
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/**
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* Mimics empty from PHP.
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*/
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function isEmpty(obj: mixed): boolean {
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if (Array.isArray(obj)) {
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return obj.length === 0;
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} else if (typeof obj === 'object') {
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for (const i in obj) {
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return false;
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}
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return true;
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} else {
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return !obj;
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}
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}
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module.exports = isEmpty;
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