type-graphql 找不到模块'class-validator'异常

Question

我正试图通过TypeORM并使用SQL Server作为数据库来创建GQL突变。如果我试图运行突变，它会抛出异常。共享下面的代码；

指数.ts

(async () => {
const app = express();

await createConnection();

const apolloServer = new ApolloServer({
schema: await buildSchema({
resolvers: [UserRegistrationResolver, HealthResolver],
}),
tracing: true,
context: ({ req, res }) => ({ req, res })
});

apolloServer.applyMiddleware({ app, cors: false });

app.listen(4000, () => {
console.log("App is started");
})
})();

GQL类型：

@InputType()
export class UserRegistrationType {
/*......*/
@Field()
Reg_Security_Qus_Ans: string;
/*......*/
}

实体：

@ObjectType()
@Entity()
export class User_Registration extends BaseEntity {
/*......*/
@Field(() => Int)
@OneToOne(()=> Security_Questions)
@JoinColumn()
Reg_Security_Qus_ID: Security_Questions;
/*......*/
}

突变：

@Resolver()
export class UserRegistrationResolver {
@Mutation(() => User_Registration)
async createRegistrations(
@Arg("RegistrationMutation") registrationMutation: UserRegistrationType
) {
console.log("Boom1");
let oneUser = await User_Registration.insert(registrationMutation);
return oneUser; 
}

@Query(() => User_Registration)
getUsers() {
console.log("Boom");
return User_Registration.find();
} 
}

当我试图执行突变时，出现了一些奇怪的错误，如下所示，要求我输入"类验证器">，错误看起来像这样，

"message": "Cannot find module 'class-validator'nRequire stack:n- 

有人能帮我解决这个问题吗。我受够了。提前谢谢。

Answer 1

我很愚蠢，我不得不安装

npm i class-validator

这个包裹。这都是

Answer 2

安装class-validator或使用buildSchema的validate: false选项。