dotenv-variable

1. add a .env file.
2. add below format of code.

isProduction: true
production:
  port: 7000
dev:
  port: 8000

3. import

const dep=require("dot-env-plus");

you can access values from config return or process.env;

const {port}=dep.config();
console.log(port);

dep.config();
console.log(process.env.port);