NestJS认证开发报错：未找到EmployeeRepository元数据

开发NestJS应用的认证功能时，遇到错误「No metadata for "EmployeeRepository" was found」，无法定位问题根源。以下是相关代码及已做的排查动作：

app.module.ts #

@Module({
  imports: [
    AgenciesModule,
    ActionsModule,
    AuthModule,
    TypeOrmModule.forRoot({
      type: 'mysql',
      host: '************',
      username: '*********',
      password: '*********',
      database: '*********',
      synchronize: true,
      autoLoadEntities: true,
    }),
    EmployeesModule,
  ],
})
export class AppModule {}

auth.service.ts #

import { EmployeeRepository } from 'src/employees/entities/employee.repository';

@Injectable()
export class AuthService {
  constructor(
    @InjectRepository(EmployeeRepository)
    private employeeRepository: EmployeeRepository,
  ) {}

  async validateUser(email: string, password: string): Promise<any> {
    const user = await this.employeeRepository.findOne({
      where: { email, password },
    });
    // 这段模拟数据在Postman请求时可以正常工作
    //const user = {
    // email: "email",
    // password: "password",
    //}
    if (user && user.email === email && user.password === password) {

      const { password, ...result } = user;
      return result;
    }
    return null;
  }
}

auth.controller.ts #

@Controller('auth')
export class AuthController {
  constructor(private authService: AuthService) {}

  @Post('login')
  async login(@Body() body) {
    return this.authService.login(body.email, body.password);
  }
}

auth.module.ts #

@Module({
  imports: [TypeOrmModule.forFeature([EmployeeRepository])],
  controllers: [AuthController],
  providers: [AuthService, JwtStrategy],
  exports: [AuthService],
})
export class AuthModule {}

employee.repository.ts #

import { EntityRepository, Repository } from 'typeorm';
import { Employee } from './employee.entity';

@EntityRepository(Employee)
export class EmployeeRepository extends Repository<Employee> {}

已做排查动作 #

• 确认所有文件的导入路径正确无误
• 更新了相关依赖包
• 参考过相关问题帖子，但未找到有效解决方案

内容的提问来源于stack exchange，提问作者Poahui