嵌套。自定义提供程序，注入无法解析 useFactory 的依赖项

Question

我在应用程序启动期间收到以下错误： Error: Nest can't resolve dependencies of the useFactory (?). Please verify whether [0] argument is available in the current context.

ConfigService 被导出并且 ConfigModule 作为第一个模块加载。不知道是我的错还是 NestJS 中的错误。也许有人可以找到一些东西）谢谢。

database.providers.ts:

import { Sequelize } from 'sequelize-typescript';
import { SEQUELIZE_TOKEN } from './constants';
import { User } from '../users/user.entity';
import { ConfigService } from '../config/config.service';

export const databaseProviders = [
 {
  provide: SEQUELIZE_TOKEN,
  useFactory: async (configService: ConfigService) => {
    const sequelize = new Sequelize({
      dialect: 'mysql',
      host: 'localhost',
      port: 3306,
      username: configService.databaseUser,
      password: configService.databasePassword,
      database: configService.databaseName,
      operatorsAliases: false,
      logging: false,
    });
    sequelize.addModels([User]);
    await sequelize.sync({ force: process.env.NODE_ENV === 'local'
    || process.env.NODE_ENV === 'test',
    });
    return sequelize;
  },
  inject: [ConfigService],
 },
];

部分 app.module.ts:

@Module({
 imports: [
  ConfigModule,
  DatabaseModule,
  GraphQLModule,
  UsersModule,
 ],
 exports: [DatabaseModule],
})

部分 config.module.ts:

@Module({
 providers: [
    {
        provide: ConfigService,
        useValue: new ConfigService(`./config`),
    },
 ],
 exports: [ConfigService],
})

Answer 1

您必须在 DatabaseModule 中导入 ConfigModule。默认情况下，Nest 中的提供程序不是全局范围的。

嵌套。自定义提供程序，注入无法解析 useFactory 的依赖项

NestJS. Custom provider, inject can't resolve dependencies of the useFactory

typescript

nestjs