How to set and use env variables on the server and in various languages.

For Node apps

The best to set and use env variables to be used within a node app is with the use of .env package (which cab be found in other languages as well).

Firstly install the package:

npm i dotenv --save

To set the variables create a .env file in the root of your project. Example of .env file:

VARIABLE_NAME=value_here

To use the variables, all you have to do is:

process.env.VARIABLE_NAME