How to check if the server is running locally or on a VPS?

Question

Node.js

Need to check the environment where the server is running?
Will it be enough to check the type HOST !== '0.0.0.0' - so it's not a localhost ?
NODE_ENV cannot be checked, as there may be a local launch in production.

Answer 1

NODE_ENV cannot be checked, as there may be a local launch in production.

Create another variable and pass the environment to it when the application starts.