How can I refactor my code to use dependency injection?

How can I refactor my code to use dependency injection?

To refactor your code for dependency injection, start by identifying the dependencies in your classes.

What are some common patterns for implementing dependency injection?

Common patterns include constructor injection, setter injection, and interface injection.

Can you give me an example of constructor injection?

Sure! In constructor injection, you pass dependencies through the class constructor, like this: class Service { constructor(repo) { this.repo = repo; } }.

What are the benefits of using dependency injection?

Benefits include improved code modularity, easier testing, and better separation of concerns.