30 lines
734 B
JavaScript
30 lines
734 B
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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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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* strict
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* @format
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*/
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'use strict';
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/**
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* Recursively "deep" freezes the supplied object.
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*
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* For convenience, and for consistency with the behavior of `Object.freeze`,
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* returns the now-frozen original object.
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*/
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function deepFreeze(object) {
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Object.freeze(object);
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Object.getOwnPropertyNames(object).forEach(function (name) {
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var property = object[name];
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if (property && typeof property === 'object' && !Object.isFrozen(property)) {
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deepFreeze(property);
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}
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});
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return object;
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}
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module.exports = deepFreeze; |