Built-in Modules

Node.js ships with several built-in modules for interacting with the OS.

Overview

Node.js ships with several built-in modules for interacting with the OS.

Code Example

import os from "node:os";\nconsole.log("Free memory:", os.freemem());

Web Development Context

In modern web development, understanding Built-in Modules is crucial. Node.js is widely used for building APIs, real-time applications, and microservices. Mastery of this concept allows you to build efficient, scalable, and secure backend systems.

Common Mistakes

• Blocking the event loop with heavy synchronous tasks.
• Exposing secrets in code instead of environment variables.
• Forgetting to handle promise rejections.

Next Steps

To solidify your understanding, review the related references and try out the practice challenges.