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21 lines
650 B
JavaScript
21 lines
650 B
JavaScript
// https://github.com/substack/deep-freeze/blob/master/index.js
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export default function deepFreeze (o) {
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Object.freeze(o);
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var objIsFunction = typeof o === 'function';
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Object.getOwnPropertyNames(o).forEach(function (prop) {
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if (o.hasOwnProperty(prop)
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&& o[prop] !== null
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&& (typeof o[prop] === "object" || typeof o[prop] === "function")
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// IE11 fix: https://github.com/highlightjs/highlight.js/issues/2318
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// TODO: remove in the future
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&& (objIsFunction ? prop !== 'caller' && prop !== 'callee' && prop !== 'arguments' : true)
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&& !Object.isFrozen(o[prop])) {
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deepFreeze(o[prop]);
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}
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});
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return o;
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};
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