Package Exports

json-bignum

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (json-bignum) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

json-bignum

Node.js JSON replacement which handles 64-bit integers and arbitrary-precision decimals. It is a modified version of Douglas Crockford's JSON library. Although it can handle 64-bit integers and arbitrary-precision decimals, it is slower than the built-in JSON functions. It uses BigDecimal.js to handle big integers and decimals which is a literal port of Java's BigInteger and BigDecimal classes.

Install

$ npm install json-bignum

Usage

parse()

var bignumJSON = require('json-bignum');

var obj = bignumJSON.parse('{ "decimal": -9223372036854775807.4237482374983253298159 }');

stringify()

var bignumJSON = require('json-bignum');

var obj = {
    bigint: new bignumJSON.BigInt('92233720368547758074237482374983253298159'),
    decimal: new bignumJSON.Decimal('-9223372036854775807.4237482374983253298159'),
};

console.log(bignumJSON.stringify(obj));

Caveats

It is not recommended to mix calls to JSON and bignumJSON. For example, JSON.stringify() does not know how to parse BigInt and Decimal.

Benchmark

Below shows the result of the benchmark on my machine.

$ node benchmark.js
$ 10000 calls of JSON.parse():                                   26.236455 ms
$ 10000 calls of JSON.stringify():                               20.933563 ms
$ 10000 calls of bignumJSON.parse() with bignums in JSON:        3282.439873 ms
$ 10000 calls of bignumJSON.parse() without bignums in JSON:     139.789558 ms
$ 10000 calls of bignumJSON.stringify() with bignums in JSON:    259.762923 ms
$ 10000 calls of bignumJSON.stringify() without bignums in JSON: 71.07643 ms