You build your Node.js apps to work first and foremost on your computer. You know it’s important that apps also work everywhere they need to run. This could be on your colleagues’ computers, internal company servers, cloud servers, or inside of a container (maybe using Docker). Enter environment variables.

illustrated guide to using environment variables

I have been a closet sketch-noter for a while now. I decided to start sharing them more. You can see the sketch-note I created for this post, as an illustrated guide to using environment variables.

Environment variables are a fundamental part of developing with Node.js, allowing your app to behave differently based on the environment you want them to run in. Wherever your app needs configuration, you use environment variables. And they’re so simple, they’re beautiful!

Read more

I wrote a post in the Node.js Collection on Medium that walks you through creating and using environment variables, leading to a Node.js app you can run anywhere. Check it out and leave a "clap" if you like it!