Dependency Injection without classes

Dependency Injection (DI) is a pattern that enhances the maintainability, scalability, and testability of your code. In TypeScript, we can leverage higher-order functions to implement Dependency Injection seamlessly, promoting a more modular and flexible codebase.

While it may sound like a complex pattern, many tools out there make it look very complicated. However, the reality is that DI is simply passing parameters, mostly to the constructor. As Rúnar Bjarnason casually once said, dependency injection is "really just a pretentious way …

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