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di-express reviews and mentions
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Any good tutorial showing you which library to use for dependency injection in a project?
`AccountEventHandlerTag` is a Symbol, acts as an ID reference for the DI Container to provide the correct dependency. AccountEventsController is not really coupled to any dependency (however it does rely on interfaces form another module), you can see here how such controller can be tested, where you manually create the dependency tree with fakes and stubs as you like https://gitlab.com/legited/di-express/-/blob/master/tests/web-server/controllers/accounts.controller.test.ts . This approach removes the need for module mocking from libraries like Jest and Rewire
Express is a router library for a web server, dependency injection is a concept universal for any OOP programs. There are no good tutorials on integrating Express with DI, I had to figure it out myself when I needed to modularize an app. Here's a proof of concept project, you can follow the structure to see how it all comes together - https://gitlab.com/legited/di-express.
Sorry for the naive question, but could you explain what the benefit of this is as compared to just setting the imported dependency directly as a class field, e.g.: how is this:
you can see here how such controller can be tested, where you manually create the dependency tree with fakes and stubs as you like https://gitlab.com/legited/di-express/-/blob/master/tests/web-server/controllers/accounts.controller.test.ts
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