Json-enhancer NPM

json-enhancer

Extension JavaScript native parser for ES new features.

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Installation

The json-enhancer package lives in npm. To install the latest stable version, run the following command:

npm i json-enhancer

Or if you're using yarn:

yarn add json-enhancer

Usage

import {decodeJSON, encodeJSON} from 'json-enhancer';

/* big number */
decodeJSON('9007199254740997')  //'9007199254740997'

/* date */
const d = new Date()
const dCopy = decodeJSON(encodeJSON(d));

dCopy.toISOString() === d.toISOString();  //true

/* Omit null, undefined, NaN */
const obj = {
    prop0:0,
    prop1:null,
    prop2:undefined,
    prop3:NaN,
};

decodeJSON(encodeJSON(obj)) //{prop0: 0}

/* Regular expression */
const reg = new RegExp('ab+c', 'i');
const regCopy = decodeJSON(encodeJSON(reg));

reg.toString() === regCopy.toString() //true
regCopy instanceof RegExp //true

/* bigint */
const b = 10n;
const obj = {b};

decodeJSON(encodeJSON(obj));  //{b: '10'}

/* Set */
const b = 10n;
const s = new Set([b,'a',1,'10',2,10,]);

//If the set contains bigInt, json-enhancer parses the value as a numeric string. If the set contains the same numeric string, only one value is retained.
decodeJSON(encodeJSON(s));  //Set(5) {'10', 'a', 1, 2, 10}


/* Map */
let myMap = new Map();

let keyObj = {};
let keyString = 'a string';
let keyNull = null;

myMap.set(keyString, "value associated with 'a string'");
myMap.set(keyObj, 'value associated with keyObj');
myMap.set(keyNull, 'value associated with keyNull');

const targetMap = decodeJSON(encodeJSON(myMap));
 
/*     
targetMap:
    Map(3) {
      'a string' => "value associated with 'a string'",
      {} => 'value associated with keyObj',
      undefined => 'value associated with keyNull'
    } 
*/

/* Symbol */
const sym = Symbol('foo');
const obj = {sym};

decodeJSON(encodeJSON(obj));  //{sym: Symbol(foo)}