JavaScript Object Comparer

When I was learning JavaScript some years back, it took me sometime to understand what Javascript Objects really are. I remember asking myself questions like why comparism operators doesn't work with Objects.

I recently started reading a book by javascript tutor titled JavaScript grammar. Towards the end of the book, he talked about comparing objects and gave a nice approach to how it could be achieved. This reminded me of my question way back then, so I decided to write a script that does deep comparism on Object literals.

This little project could also serve as a good learning resource for anyone who is inquisitive enough to want to know how to really compare any kind of Object literals(simple or complex). The code has been properly commented and formatted for readability and ease of understanding.

Build Setup

Install dependencies

npm install

Run the script

npm run start

Run unit tests

npm run test

The package has also been published as an npm module and can be used.

Installation

npm install compare-object

After installing the module, you can make use of it as shown

const objCompare = require('compare-object');
const a = {
a: 1,
b: 'string',
c: true,
d: () => 'wooow!!',
e: new Date(15, 7, 2019),
f: new RegExp('Gbadebo', 'gi'),
g: new Set([1, 2, 3, 4]),h: [1, 2, 3, true, "gbadebo", new Date(15, 7, 2019), new Set([4, 5, 6, 7])]


const b = {
f: new RegExp('Gbadebo', 'gi'),
c: true,e: new Date(15, 7, 2019),
h: [1, 2, 3, true, "gbadebo", new Date(15, 7, 2019), new Set([4, 5, 6, 7])],
b: 'string'
g: new Set([1, 2, 3, 4]),d: () => 'wooow!!',
a: 1}

console.log(objCompare(a, b)) //returns true

I have written an article that explains how everything here works under the hood, the article can be found

here

cwwjsyc/ObjectCompare