使用Awilix依赖注入时出现AwilixResolutionError: Could not resolve 'run'问题求助

问题简述 #

使用Awilix实现依赖注入时，执行函数程序崩溃，抛出错误：AwilixResolutionError: Could not resolve 'run'

相关代码片段 #

依赖注入配置文件 #

const container = awilix.createContainer({
   injectionMode: awilix.InjectionMode.PROXY,
});
container.register({
   userRepo: awilix.asClass(UserMock),
   getUserById: awilix.asClass(GetUserByIdInteractor),     
   signin: awilix.asClass(Signin),
});
export const signin: Signin = container.resolve('signin');

Signin类 #

// 存在语法错误
export class new Signin extends UseCase { 
   constructor(private getUserById: GetUserById){ super() }

  async run(username: string, password: string) {
      // some code
  }
} 

GetUserById类 #

// 存在语法错误
export class new GetUserById { 
   constructor(private userRepo: UserRepository){ super() }

  async run(id: string) {
      // some code
  }
}

UserRepository接口 #

export interface UserRepository { getById(id: string): Promise<User> }

UserMock实现类 #

// 存在语法错误
export UserMock implements UserRepository {
    getById(id: string){  
      //some code  
    }
}

GraphQL解析器 #

export class SigninResolver {
   async signin(@Arg('data', () => SigninInput){
       const res = signin(data.username, data.password);
       return res;
   }
}

解决方案 #

• 修复类定义的语法错误

  • Signin和GetUserById类的export class new是无效语法，需删除new，改为export class Signin和export class GetUserById
  • UserMock类缺少class关键字，正确写法为export class UserMock implements UserRepository

• 确保依赖注册与构造参数名匹配
  Awilix默认按参数名注入依赖，当前注册getUserById时使用的类是GetUserByIdInteractor，但Signin构造函数依赖的类型是GetUserById，二者需保持一致：

  • 要么将注册项改为getUserById: awilix.asClass(GetUserById)
  • 要么将Signin构造函数的参数名改为getUserByIdInteractor，同时注册key对应改为getUserByIdInteractor

• 修正实例调用方式
  解析器中直接调用signin(...)是错误的，signin是Signin类的实例，需调用其run方法；且run是异步方法，必须加await：

  async signin(@Arg('data', () => SigninInput) data) {
       const res = await signin.run(data.username, data.password);
       return res;
   }
  

内容的提问来源于stack exchange，提问作者Jhonatan Malara