Graphql 为突变图ql提供显式类型

我正在尝试创建一个可以接受产品列表的变体。但这样做GraphQL会为createMultipleProducts方法抛出错误。不知道这里出了什么错

import { Inject } from "@nestjs/common";
import { Args, Mutation, Query, Resolver } from "@nestjs/graphql";
import { ClientProxy } from "@nestjs/microservices";
import { ProductRequest } from "src/types/ms-product/product.request.type";
import { ProductResponse } from "src/types/ms-product/product.response.type";
@Resolver(of => ProductResponse)
export class ProductResolver {

  constructor(
    @Inject('SERVICE__PRODUCT') private readonly clientServiceProduct: ClientProxy
  ) {}

  @Mutation(returns => ProductResponse)
  async createProduct(@Args('data') product: ProductRequest): Promise<ProductResponse> {
    const PATTERN = {cmd: 'ms-product-create'};
    const PAYLOAD = product;
    return this.clientServiceProduct.send(PATTERN, PAYLOAD)
    .toPromise()
    .then((response: ProductResponse) => {
      return response;
    })
    .catch((error) => {
      return error;
    })
  }

  @Mutation(returns => [ProductResponse])
  async createMultipleProducts(@Args('data') products: [ProductRequest]): Promise<Array<ProductResponse>> {
    try {
      const PROMISES = products.map(async (product: ProductRequest) => {
        const PATTERN = {cmd: 'ms-product-create'};
        const PAYLOAD = product;
        return await this.clientServiceProduct.send(PATTERN, PAYLOAD).toPromise();
      });
  
      return await Promise.all(PROMISES);
    } catch (error) {
      throw new Error(error);
    }
  }

  @Query(returns => ProductResponse)
  async readProduct(@Args('data') id: string) {
    return {}
  }
}

---

若GraphQL是一个复杂的对象数组，则需要显式地通知它参数的类型

@Mutation（返回=>[ProductResponse]）
异步createMultipleProducts（@Args（{name:'data'，type:（）=>[ProductRequest]}）产品：ProductRequest[]）：承诺{
...
}

UnhandledPromiseRejectionWarning: Error: Undefined type error. Make sure you are providing an explicit type for the "createMultipleProducts" (parameter at index [0]) of the "ProductResolver" class.