How to Publish Your Package on npm

The npm (Node Package Manager) registry lets developers share reusable code packages with the community. If you’ve created a library, tool, or utility in JavaScript or TypeScript, you can publish it to npm so others can install it with a simple command.

Step 1: Install Node.js and npm

• Download and install Node.js from nodejs.org.
• npm comes bundled with Node.js, so no extra installation is needed.
• Verify installation:

  node -v
  npm -v

Step 2: Create Your Project

1. Make a new folder for your package.

   mkdir my-package
   cd my-package

1. Initialize the package:

   npm init -y

This generates a package.json file with basic metadata.

Step 3: Write Your Code

Example index.js:

function greet(name) {
  return `Hello, ${name}!`;
}

module.exports = greet;

Update package.json to set the entry point:

"main": "index.js"

Step 4: Log in to npm

If you don’t already have an npm account, create one at npmjs.com.
Then log in through the terminal:

npm login

Step 5: Publish the Package

Run the command:

npm publish

By default, the package will be public. Anyone can install it using:

npm install my-package

Step 6: Update the Package

If you make changes, bump the version in package.json (for example 1.0.1 → 1.0.2) and republish:

npm version patch
npm publish

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