Running Next.js in developer mode

In order to start the server, by convention we need to define a start script in package.json, so we will add the following there:

{
  "scripts": {
    "start": "next"
  }
}

Now, you can start the server by typing this in the console:

$ npm start

Now, if you visit http://localhost:3000 in your browser, you will see the running server.