get-id

Keep track of your JS objects (and functions) via a unique id.

Install:

npm install --save get-id

Usage:

import getid from 'get-id'
// or:
// var getid = require('get-id');
 
var object  = {},
    object2 = {};
 
var objid  = getid(object);
var obj2id = getid(object2);
 
objid  === getid(object);
obj2id === getid(object2);
 

What's happening?

getid assigns an id (int) to a non-enumerable, non-writable property on the passed object or function under the key __object_id__, and then returns it.

Using a custom id property name

If for whatever reason you don't want to use the __object_id__ key, you can generate a custom getid function using the exported create function:

import { create as create_getid } from 'get-id';
 
const customgetid = create_getid('__this_is_a_custom_key');
const object = {};
const objectid = customgetid(object);
 
objectid === object['__this_is_a_custom_key'];