I recently built a tool that I personally needed for my own projects, and now I’m super curious if other developers would actually find it useful.
It’s called dotenv-diff, and the main feature is a codebase scanner that finds problems with environment variables before they break things.
Why I built it
I kept seeing the same issues in real projects:
Feature breaks because .env is missing variables
New developer joins → app crashes due to missing env
.env.example goes out of sync
Someone accidentally leaves a secret inside a TS file
Frontend frameworks misused env naming (NEXT_PUBLIC, VITE_, etc.)
I wanted one CLI command that gives me a full health check of environment usage in my project.
Honest question:
Would this be useful in your workflow?
If you want to check it out:
npm package: https://www.npmjs.com/package/dotenv-diff Docs: https://dotenv-diff-docs.vercel.app