javascript - 如何在 TypeScript 中导出多个对象实例？

Question

我正在使用依赖注入系统(inversifyJS)构建自身并在内部解决依赖关系的 TypeScript 库。我遇到的问题是-我想将注入系统中的多个实例公开给库的使用者。

目前我想做的是：

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 };

我看到的一个可能的解决方案是使用外观来导出类型并稍后访问它们：

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();

但问题是我还有一个无用的抽象

有没有办法在不丢失类型定义和导出现成对象的情况下实现这种解决方案？

Answer 1

您想使用多重声明变量，例如

export const
    EntityManagerInstance = kernel.get<EntityManager>(EntityManager),
    LanguageServiceInstance = kernel.get<EntityManager>(LanguageService),
    StorageServiceInstance = kernel.get<EntityManager>(StorageService);