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Express.js

Let’s start by building a small app using the well-known express.js library for JavaScript/nodejs.

Setup the project

Create a project folder and initialize a git repository:

$ mkdir ./my-app
$ cd my-app/
$ git init
Initialized empty Git repository in /Users/user/projects/my-app/.git/

Install express.js as a dependency using npm:

$ npm install express --save
$ echo "node_modules" > .gitignore

Hello world!

Let’s create an app.js file with the following content (inspired by the express.js hello world example):

const express = require('express')
const app = express()
const port = process.env.port || 3000

app.get('/', (req, res) => {
  res.send('Hello World!')
})

app.listen(port, () => {
  console.log(`Example app listening on port ${port}`)
})

Define a start command in package.json:

$ npm pkg set scripts.start="node app.js"

You can test the app locally by running: npm run start and it will be available at http://localhost:3000/.

Deploy to Runway

Create an application on Runway:

$ runway app create
INFO    checking login status                        
INFO    created app "relaxed-meteor"                 
create app relaxed-meteor: done
next steps:  
* commit your changes  
* runway app deploy  
* runway open

Set the port:

$ runway app config set PORT=3000

And deploy:

$ runway app deploy && runway open

Congratulations, you deployed an express.js application to Runway! 🎉