28 lines
900 B
JavaScript
28 lines
900 B
JavaScript
import { factory } from '../utils/factory.js';
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var name = 'replacer';
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var dependencies = [];
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export var createReplacer = /* #__PURE__ */factory(name, dependencies, () => {
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/**
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* Stringify data types into their JSON representation.
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* Most data types can be serialized using their `.toJSON` method,
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* but not all, for example the number `Infinity`. For these cases you have
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* to use the replacer. Example usage:
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*
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* JSON.stringify([2, Infinity], math.replacer)
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*
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* @param {string} key
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* @param {*} value
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* @returns {*} Returns the replaced object
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*/
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return function replacer(key, value) {
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// the numeric values Infinitiy, -Infinity, and NaN cannot be serialized to JSON
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if (typeof value === 'number' && (!isFinite(value) || isNaN(value))) {
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return {
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mathjs: 'number',
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value: String(value)
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};
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}
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return value;
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};
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}); |