Typescript Nest.js Graphql嵌套输入类型引发引用错误

使用Nest.js graphql的代码优先方法，我试图创建一个嵌套输入类型的变体。服务器抛出以下错误

__metadata("design:type", MenuInput)
                              ^
ReferenceError: Cannot access 'MenuInput' before initialization
at Object.<anonymous> (.../dist/order.input.js:26:31)

输入类如下所示

import { Field, InputType, Int } from '@nestjs/graphql';

@InputType()
export class OrderInput {
  @Field()
  orderName: string;

  @Field(_type => MenuInput)
  menu: MenuInput;
}

@InputType()
class MenuInput {
  @Field()
  id: string;
}

分解器 在解析器中，我需要一个OrderInputs数组

  @Mutation(_returns => OrderModel)
  async createOrder(
    @Args('newOrderData', { type: () => [OrderInput] })
    newOrderData: OrderInput[],
  ): Promise<OrderModel[]> {
    return this.orderService.createOrder(newOrderData);
  }

---

我们不能有嵌套的InputType，或者这是一个bug？非常感谢您的帮助。

这是typescript及其装饰程序工作原理的一部分。在使用类的值之后定义它。要么在文件中向上移动类，要么将其移动到自己的文件。

OMG！！我简直不敢相信我竟然没有看到：脸和手掌。非常感谢

  @Mutation(_returns => OrderModel)
  async createOrder(
    @Args('newOrderData', { type: () => [OrderInput] })
    newOrderData: OrderInput[],
  ): Promise<OrderModel[]> {
    return this.orderService.createOrder(newOrderData);
  }

  "dependencies": {
    "@nestjs/common": "^7.5.1",
    "@nestjs/core": "^7.5.1",
    "@nestjs/graphql": "^7.9.5",
    "@nestjs/platform-express": "^7.5.1",
    "apollo-server-express": "^2.19.2",
    "graphql": "^15.4.0",
    "graphql-tools": "^7.0.2",
    "reflect-metadata": "^0.1.13",
    "rimraf": "^3.0.2",
    "rxjs": "^6.6.3"
  },
  "devDependencies": {
    "@nestjs/cli": "^7.5.1",
    "@nestjs/schematics": "^7.1.3",
    "@nestjs/testing": "^7.5.1",
    "@types/express": "^4.17.8",
    "@types/jest": "^26.0.15",
    "@types/node": "^14.14.6",
    "@types/supertest": "^2.0.10",
    "@typescript-eslint/eslint-plugin": "^4.6.1",
    "@typescript-eslint/parser": "^4.6.1",
    "eslint": "^7.12.1",
    "eslint-config-prettier": "7.1.0",
    "eslint-plugin-prettier": "^3.1.4",
    "jest": "^26.6.3",
    "prettier": "^2.1.2",
    "supertest": "^6.0.0",
    "ts-jest": "^26.4.3",
    "ts-loader": "^8.0.8",
    "ts-node": "^9.0.0",
    "tsconfig-paths": "^3.9.0",
    "typescript": "^4.0.5"