Using Decorators and Metadata for JavaScript Class Introspection

Modern JavaScript relies heavily on decorators to add configuration and metadata to classes without cluttering business logic. This course teaches you the fundamental concepts of class decorators, focusing specifically on how to use reflection to inspect and utilize the metadata they apply, enabling you to build more dynamic and configurable applications. What you'll learn: * Understand the syntax and execution flow of JavaScript class, method, and property decorators. * Apply foundational design patterns using decorators, such as dependency injection markers or serialization flags. * Master the use of Reflect metadata APIs for attaching and retrieving custom data during runtime. * Practice introspecting class definitions to dynamically configure application behavior based on applied metadata. * Configure basic tooling setups to correctly compile and execute modern decorator syntax. We begin by defining the basics of JavaScript classes and the decorator proposal structure before moving into practical examples of metadata application and runtime reflection techniques. This course is designed for JavaScript developers new to reflection and decorator patterns. No prior experience with advanced metaprogramming concepts is required. Start building more structured and extensible JavaScript applications today.