How to change the values ​​of .env variables depending on the URL where the application is launched?

Question

Node.js

There is a react application that can run on three different urls, depending on whether it is production, development or UAT. How to change the values ​​of variables in the .env file depending on which url the application is running on?

or at worst

как подключать разные .env в зависимости от того же url?

Answer 1

You would also ask how to dynamically change the application code and recompile the sources on the fly :)
Create several .envfiles with the necessary parameters and use different parameters depending on the environment.
The most popular way is to use the NODE_ENV environment variable, and name the files development.envandproduction.env