unsafe-json

unsafe json serializer, but fast.

Installation

npm i unsafe-json -S

Usage

import { build, parse } from 'unsafe-json';

const obj = {
  name: 'john',
  age: 23,
  married: false,
  skills: ['nodejs', 'python'],
  location: {
    country: 'china',
    city: 'beijing'
  }
};

const schema = {
  name: 'string',
  age: 'number',
  married: 'boolean',
  skills: ['string'],
  location: {
    country: 'string',
    city: 'string'
  }
};

const stringify = build(schema);
const str = stringify(obj);
console.log(str);
console.log(parse(str));

Api

.build(schema: any, strict = true): (obj: any) => string

to squeeze a little bit more performance, set strict = false, it will not dispose type of undefined

.parse(jsonStr: string)

like JSON.parse

Performance

tests on my PC: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz

• simple object, ~8X faster (strict=false)

{"a":1,"b":"hello","c":{"x":1,"y":"zzzzzz"}}
------- performance comparation -------
native stringify: 68.610ms
unsafe stringify: 8.842ms
native parse: 103.864ms
unsafe parse: 42.718ms

• object with array, ~3X faster

{"a":1,"b":"hello","c":{"x":1,"y":"zzzzzz"},"d1":["asd","aaaaaa","asdasdasd"],"d":[{"x":1,"y":"zzzzzz"},{"x":1,"y":"zzzz"},{"x":1,"y":"z"}]}
------- performance comparation -------
native stringify: 188.564ms
unsafe stringify: 66.726ms
native parse: 252.536ms
unsafe parse: 72.011ms

Todo

• [ ] xxx

License

MIT