How to create and publish npm package

Package Name - print-helloworld-npm-package How to install - npm i print-helloworld-npm-package

Step-1:

• Go to the NPM registry and run a search
• Choose a unique name. (mynpmpackage is treated same as my-npm-package)
• Let say we found a unique name and this is the one

Step-2:

• Create a new folder/directory and name this that unique name, for our case it is my-npm-package
• Make sure your system has NodeJS installed. Check by running the command node -v and if not installed, install it.

Step-3:

• Run git init command inside project directory to track the changes using version control

Step-4:

• Initialize NPM in the project by running npm init command
• This will create a package.json file. You will get prompts to provide the following information:

Step-5:

• In the project folder create a file named index.js, where all the logics will be written.
• For this example, here is the code that returns a string "Hello World"

function printHelloWorld(){
    return "Hello World!";
}

module.exports = printHelloWorld;

Step-6:

• To publish your package on the NPM registry, you need to have an account. If you don't have an account, visit the NPM sign up page to create one.
• After creating the account, open your terminal and run the following command in the root of your package:

npm login

• You will get a prompt to enter your username and password. If login is successful, you should see a message like this:

Logged in as <your-username> on https://registry.npmjs.org/.

Step-7:

You can now run the following command to publish your package on the NPM registry:

npm publish

If all goes well, you should get results similar to the screenshot below:

If you have been following along, then congratulations! You just published your first NPM package.