56 lines
1.4 KiB
JavaScript
56 lines
1.4 KiB
JavaScript
/**
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* @fileoverview Serialization utils.
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* @author Bryan Mishkin
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*/
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'use strict';
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/**
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* Check if a value is a primitive or plain object created by the Object constructor.
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* @param {any} val the value to check
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* @returns {boolean} true if so
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* @private
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*/
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function isSerializablePrimitiveOrPlainObject(val) {
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return (
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val === null ||
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typeof val === 'string' ||
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typeof val === 'boolean' ||
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typeof val === 'number' ||
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(typeof val === 'object' && val.constructor === Object) ||
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Array.isArray(val)
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);
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}
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/**
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* Check if a value is serializable.
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* Functions or objects like RegExp cannot be serialized by JSON.stringify().
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* Inspired by: https://stackoverflow.com/questions/30579940/reliable-way-to-check-if-objects-is-serializable-in-javascript
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* @param {any} val the value
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* @returns {boolean} true if the value is serializable
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*/
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function isSerializable(val) {
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if (!isSerializablePrimitiveOrPlainObject(val)) {
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return false;
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}
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if (typeof val === 'object') {
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for (const property in val) {
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if (Object.hasOwn(val, property)) {
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if (!isSerializablePrimitiveOrPlainObject(val[property])) {
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return false;
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}
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if (typeof val[property] === 'object') {
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if (!isSerializable(val[property])) {
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return false;
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}
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}
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}
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}
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}
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return true;
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}
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module.exports = {
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isSerializable,
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};
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