Dev Dependencies

Separate packages needed only for building or testing your app.

Overview

Separate packages needed only for building or testing your app.

Code Example

// Terminal: npm install --save-dev jest\n// Used only for development/testing, not production

Web Development Context

In modern web development, understanding Dev Dependencies 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.