How to publish a package to npm ?

To publish a package to npm, we should follow the following steps.

STEP 1 : Make sure your project have package.json file something like this.

{
  "name": "your-package-name",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT"
}

STEP 2 : update your entry file with required functionality. Here entry file is index.js as we defined in package.json as “main”: “index.js”. Following is some example code.

// index.js
module.exports = function greeting(name) {
  return `Hello, ${name}!`;
};

STEP 3: signup to npm using https://www.npmjs.com/signup

STEP 4: Now login to npm using the following command in the terminal

npm login

STEP 5: publish the package using the following command. (Make sure package name is unique)

npm publish

Finally you are able use that package anywhere by just installing with the following command

npm i your-package-name