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