I am building a library in TypeScript that is using a dependency injection system (inversifyJS) to construct itself and resolve dependencies internally. The problem I have is - I want to expose multiple instances from the injection system to the consumers of the library.
Currently what I am trying to do is:
import kernel from "./src/inversify.config";
import EntityManager from './src/manager/entityManager.service';
import StorageService from './src/storage/storage.service';
import LanguageService from './src/language/language.service';
export { kernel.get<EntityManager>(EntityManager) as EntityManagerInstance };
export { kernel.get<EntityManager>(LanguageService) as LanguageServiceInstance };
export { kernel.get<EntityManager>(StorageService) as StorageServiceInstance };
A solution that I see is possible is to use a facade to export types and access them later:
import EntityManager from './src/manager/entityManager.service';
import StorageService from './src/storage/storage.service';
import LanguageService from './src/language/language.service';
import InjectionFacade from './utils/injection.facede';
export { EntityManager, LanguageService, StorageService, InjectiorFacade };
// Usage:
// import {InjectionFacade, StorageService} from 'entity-manager';
// let injectionFacade: InjectionFacade = InjectionFacade.createAndResolve();
// let storageService: StorageService = injectionFacade.getStorageService();
But the problem with this is I have one more useless abstraction
Is there a way to implement this kind of solution without loosing type definitions and exporting ready-to-use objects?
You'd want to use a multiple-declaration variable, eg
export const
EntityManagerInstance = kernel.get<EntityManager>(EntityManager),
LanguageServiceInstance = kernel.get<EntityManager>(LanguageService),
StorageServiceInstance = kernel.get<EntityManager>(StorageService);
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