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A super light and fast circular JSON parser.

2.0.1  •  Updated 9 months ago  •  by Andrea Giammarchi  •  ISC License

Downloads Coverage Status Build Status License: ISC WebReflection status

A super light (0.5K) and fast circular JSON parser, directly from the creator of CircularJSON.

Usable via CDN or as regular module.

// ESM
import {parse, stringify} from 'flatted/esm';

// CJS
const {parse, stringify} = require('flatted/cjs');

const a = [{}];
a[0].a = a;
a.push(a);

stringify(a); // [["1","0"],{"a":"0"}]

New in V1: Exact same JSON API

  • Added a reviver parameter to .parse(string, reviver) and revive your own objects.
  • Added a replacer and a space parameter to .stringify(object, replacer, space) for feature parity with JSON signature.

Compatibility

All ECMAScript engines compatible with Map, Set, Object.keys, and Array.prototype.reduce will work, even if polyfilled.

How does it work ?

While stringifying, all Objects, including Arrays, and strings, are flattened out and replaced as unique index. *

Once parsed, all indexes will be replaced through the flattened collection.

* represented as string to avoid conflicts with numbers

// logic example
var a = [{one: 1}, {two: '2'}];
a[0].a = a;
// a is the main object, will be at index '0'
// {one: 1} is the second object, index '1'
// {two: '2'} the third, in '2', and it has a string
// which will be found at index '3'

Flatted.stringify(a);
// [["1","2"],{"one":1,"a":"0"},{"two":"3"},"2"]
// a[one,two]    {one: 1, a}    {two: '2'}  '2'

Popularity

Maintenance

Development

Last ver 9 months ago
Created 2 years ago
Last commit 5 days ago
14 days between commits

Technology

Node version: 11.15.0
20.9K unpacked

Compliance

ISC License
OSI Approved
0 vulnerabilities

Contributors

5 contributors
Andrea Giammarchi
Maintainer, 48 commits, 5 merges, 1 PRs
bigopon.777@gmail.com
1 commits, 1 PRs
Ivan Stoyanov
1 commits, 1 PRs
Nicolas HENRY
1 commits, 1 PRs
dominik-meissner
1 commits, 1 PRs
Works at 169 Labs
ndelangen
1 PRs

Tags

circular
JSON
fast
parser
minimal
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