What are TypeScript decorators and how are they used in Angular?

What are TypeScript decorators and how are they used in Angular?

TypeScript decorators are special annotations that can be attached to classes, methods, or properties. In Angular, they are used to add metadata to classes, enabling features like dependency injection and component configuration.

Can you give me an example of a decorator in Angular?

Sure! A common example is the @Component decorator, which is used to define an Angular component. It provides metadata like the component's selector, template, and styles.

How do I create a custom decorator in Angular?

To create a custom decorator, you define a function that returns a function. This inner function can then modify the target class or method. For example, you could create a logging decorator that logs when a method is called.

What are the benefits of using decorators in Angular?

Decorators help in organizing code, enhancing readability, and reducing boilerplate. They also enable powerful features like dependency injection and lifecycle hooks.