Use Environment Variables for Configuration

Tip:

Use environment variables to manage configuration settings for different environments (development, testing, production).

Example:

javascriptCopy code// Load environment variables from .env file
require('dotenv').config();

const dbHost = process.env.DB_HOST || 'localhost';
const dbPort = process.env.DB_PORT || 5432;

console.log(`Connecting to database at ${dbHost}:${dbPort}`);

Reason: Environment variables provide a flexible way to manage configuration and sensitive data without hardcoding them into your application.