Allow to inject TypeORM repositories (and other generic classes and interfaces)

[LoicPoullain]

Issue

Version 1.6 of FoalTS will give the possibility to inject manually class instances (#599). This can be useful for example to inject TypeORM connections.

class Controller {
  @dependency
  connection: Connection;
}

const connection = await createConnection();
const serviceManager = new ServiceManager();
serviceManager.set(Connection, connection);

const app = createApp(AppController, { serviceManager });

However, this is not sufficient to inject TypeORM repositories as they are generic classes.

// This cannot work. After compilation only the class `Repository` remains.
class Controller {
  @dependency
  users: Repository<User>;

  @dependency
  products: Repository<Product>;
}

Solution

Add a new @Dependency decorator to allow to inject services with string keys and values.

class Controller {
  @Dependency('User')
  users: Repository<User>;

  @Dependency('Product')
  products: Repository<Product>;
}

const serviceManager = new ServiceManager()
  .set('User', getRepository(User));
  .set('Product', getRepository(Product));

const app = createApp(AppController, { serviceManager });

TODO: update also createService

Related issues

#538 #598

[anonimusprogramus]

Thank you. I had a wish that @dependency would be capitalized. Now it is. 👍

[LoicPoullain]

Feature added in v1.8.