This module delves into key creational design patterns in JavaScript and Node.js, including Factory, Builder, and Revealing Constructor. Learners will discover how these patterns simplify object creation, enhance code maintainability, and address real-world development challenges. Practical examples and hands-on exercises illustrate how to implement and adapt these patterns in modern JavaScript applications.

This module introduces key structural design patterns in Node.js, including Proxy, Decorator, and Adapter, to help you build flexible and maintainable software architectures. You will learn how these patterns enable object composition, control access, extend behavior, and bridge incompatible interfaces. Practical examples and comparisons will deepen your understanding of their implementation and use cases.

This module delves into key behavioral design patterns in JavaScript and TypeScript, such as Strategy, State, Iterator, Middleware, and Command. Learners will discover how these patterns facilitate flexible, maintainable, and scalable code by managing object interactions and system behaviors. Real-world examples and hands-on implementations illustrate how to apply these patterns in modern web development.

This module guides learners through essential testing strategies in Node.js, including unit, integration, and end-to-end tests. You will explore patterns like Arrange-Act-Assert, Behavior-Driven Development, and the testing pyramid, while gaining hands-on experience with test runners, mocking, and code coverage. By the end, you'll be able to structure, implement, and optimize automated tests for robust and maintainable applications.