How to create an NPM Package in 5 minutes

What is NPM
It is a package manager for the JavaScript programming language. This is the world's largest Software Registry.

Step 1 - Create an npm project
1.1 Create a folder named "my_demo_calculator"

mkdir my_demo_calculator

1.2 Create an npm project

npm init -y

It will turn your project folder into an npm package

1.3 Create a file named "index.js" and add the following code to it.

function add(x,y){
    return x+y;
}
function sub(x,y){
    return x-y;
}
function mul(x,y){
    return x*y;
}
function divide(x,y){
    return x/y;
}

module.exports = {add,sub,mul,divide}

1.3 (Optional) Create a README.md file and add it to the folder

1.4 Login into the NPM Registry. You need to create an account on npmjs.com and use the same here

npm login

1.5 Publish the Package with the following command

npm publish

That's It :)

You can see my sample package on the links below

https://www.npmjs.com/package/demo_npm_package_devtalks