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Clean Architecture Series
I'm an enthusiastic Chilean software engineer in New Zeland. I mostly focus on the back-end of the systems. This is my site, Señor Developer, where I share my knowledge and experience.
In this series, I will show you the clean architecture system and how to implement it in nodejs and typescript.
Clean Architecture Series
Quilla Frontend Kit turns recurring API, authentication, and server-state concerns into composable TypeScript packages.
Quilla Backend Kit provides the foundations for structured TypeScript services while leaving the application architecture in your hands.
Practical constraints for preserving the framework’s boundaries, dependency direction, and readability as a test suite grows.
A tool-agnostic approach to separating test intent from UI mechanics as an automation suite grows.
In this article, we will go through the entire process of set up Visual Studio Code for debugging “Deno” programs using “V8 Inspector Protocol”. Step-by-step, we will be learning how to configure VSCode to debug a Deno project. If you don’t know Deno...
Continuing with the Clean Architecture Series, in this article we are going to create an API REST in nodejs and typescript for an imaginary business of an "Insurance Company".
So, let define the system components and the application flow to implement the Clean architecture concepts.
Frameworks: Express as a web server and Sqlite3 as a Database.
Adapters: CreatePolicyController and ExpressAdapter to adapt the express request into the controller and use-case needs.
Use Cases: CreatePolicyUseCase with the all business logic related the insurance policy's creation process.
Domain/Entities:
PolicyRepository: Database communication to persist and fetch the insurance policy data.
PolicyEntity: Encapsulate all the business rules needed to store a new insurance policy into the system.
App: Run the express webserver and makes the necessary objects to satisfy the inner layer's dependencies
ExpressAdapter: Adapt the express request object into the controller format.
CreatePolicyController: Adapt the data into the CreatePolicyUseCase format and inject the use case dependencies from the external layers.
CreatePolicyUseCase: Apply the business logic using the PolicyRepository and PolicyEntity.
PolicyEntity: Apply the business rules which every policy holder needs to satisfy.
PolicyRepository: Define the SQL queries and execute it into the database.
All right, let's hit the code now. See you in the next article.
