An object difference library for NodeJS

This module can compares two objects and return the key that has changed along with the original and updated values.

Installation

$ npm install objecdiff

Usage

const objecdiff = require('objecdiff');

// Alternatively:
import { diff } from 'objecdiff';

API

diff(original, updated) Documentation

objecdiff.diff(objectA, objectB)

// Alternatively if using the `import` method shown above:
diff(objectA, objectB)

• objectA - Object - The original or first object that you would like to compare.
• objectB - Object - The updated or second object that you would like to compare the first against.

Example

import { diff } from 'objecdiff';

let a = {
        firstName: 'Mike',
        lastName: 'R',
        city: 'Boston'
    },
    b = {
        firstName: 'Dan',
        name: 'Dan G',
        color: {
            favorite: 'blue'
        },
        city: 'Boston'
    };

console.log(diff(a, b));
// => [ { path: 'firstName', original: 'Mike', updated: 'Dan' },
// =>   { path: 'lastName', original: 'R', updated: undefined },
// =>   { path: 'name', original: undefined, updated: 'Dan G' },
// =>   { path: 'color.favorite', original: null, updated: 'blue' } ]

Tests

$ npm test

To see test coverage, please run:

$ npm run coverage

Features

• Natively supports nested documents
• Compares the objects and returns the key that has changed along with the original and updated values