embed-react-app-envs

Safely bundle server's environnement variable into react apps

Motivation

Create react app provides no official way to inject environnement variable from the server into the page. When you run yarn build create react app do bundle all the variables prefixed by REACT_APP_ and expose them under process.env (see here).
The problem, however is that you likely don't want to build your app on the server.
The CRA team also suggest to introduce placeholders in the public/index.html and do the substitution on the server before serving the app. This solution involves a lot of hard to maintain scripting.

This module abstract away the burden of managing environnement variable injection as well as providing a type safe way to retrieve them in your code (using TypeScript).