.env- ((better)) -

const dbHost = process.env.DB_HOST; const dbUser = process.env.DB_USER; const dbPassword = process.env.DB_PASSWORD; const apiKey = process.env.API_KEY;

Use the dotenv package. require('dotenv').config() or import 'dotenv/config' . Python: Use python-dotenv . PHP: Use phpdotenv . const dbHost = process