Long live type-safe environment variable management in Node.js

Anja Petry

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Node.js 20.6.0 brings support for loading environment variable files. Reading directly from process.env has issues such as lack of type safety, validation, and immutability. Zod is a library used to parse and validate environment variables.

Dotenv is dead

Why do we take a simple .env file and make it type safe. I think this adds more complexity

I think the term “dead” should not be used unless the technology described as dead is really becoming something not useful at all !

Javascript is not typesafe. Even if you use typescript, it ends transpiled and looses the type safe.
Also, dotenv files should have just strings, end should emulate env vars.

I think your examples will be useful for many people, I also often use zod for typing env object

cant wait to add more complexity to my insanely complicated next stack