util.obj-cycle

Monkey patched additional JSON functionality for cyclical objects

This module is a wrapper for cyclical object resolution using Douglas Crockford's JSON-js cycle code. It monkey patches two functions:

• JSON.decycle
• JSON.retrocycle

Installation

This module uses yarn to manage dependencies and run scripts for development.

To install as an application dependency with cli:

$ yarn add --dev util.obj-cycle

To build the app and run all tests:

$ yarn run all

Usage

To use this module, just use require to monkey patch it into the environment:

require('util.obj-cycle');

To remove the cycles from an object use JSON.decycle():

    const i = {a: "x", ref: null};
    const j = {b: "y", ref: null};
    const k = {c: "z", ref: null};
    i.ref = j;
    j.ref = k;
    k.ref = i;

    let s: string = JSON.stringify(JSON.decycle(i));

    /// s ->  {"a":"x","ref":{"b":"y","ref":{"c":"z","ref":{"$ref":"quot;}}}}

The process can be reversed on the object with JSON.retrocycle:

    let obj = JSON.retrocycle(JSON.parse(s));

The functions can also be included directly without the monkey patching by using import:

import {decycle, retrocycle} from "util.obj-cycle";

This is the same underlying code. Just a differnt way to do the same thing.