What are the best practices for Angular dependency injection?

What are the best practices for Angular dependency injection?

Some best practices include using providedIn for tree-shakable services, avoiding circular dependencies, and using multi-providers when necessary.

Can you explain what tree-shakable services are?

Tree-shakable services are services that can be included or excluded from the final bundle based on whether they are used in the application, helping to reduce the bundle size.

How do I avoid circular dependencies?

To avoid circular dependencies, you can refactor your code to separate concerns, use interfaces, or create a shared module for common services.

What are multi-providers?

Multi-providers allow you to provide multiple values for a single token, enabling you to inject an array of services into a component.