What are some common pitfalls in Angular dependency injection?

What are some common pitfalls in Angular dependency injection?

Some common pitfalls include circular dependencies, not providing services in the right module, and misunderstanding hierarchical injectors.

Can you explain circular dependencies and how to avoid them?

Circular dependencies occur when two or more services depend on each other. To avoid them, refactor your code to eliminate direct dependencies, possibly using an intermediary service.

What happens if I don't provide a service in the right module?

If a service isn't provided in the correct module, it may lead to runtime errors or unexpected behavior, as Angular won't be able to resolve the dependency.

Are there best practices for structuring my services?

Yes, it's best to keep services focused on a single responsibility, use hierarchical injectors wisely, and avoid tightly coupling services.