带有supertest的NestJS编译时不会显示“无法调用类型缺少调用签名的表达式”

npm install --save @nestjs/core @nestjs/common supertest

import { Test, TestingModule } from '@nestjs/testing';
import { AppModule } from '../src/app.module';
import * as request from 'supertest';

describe('AppController (e2e)', () => {
  let app;

  beforeAll(async () => {
    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [AppModule],
    }).compile();

    app = moduleFixture.createNestApplication();
    await app.init();
  });

  afterAll(async () => {
    await app.close();
  });

  it('/ (GET)', () => {
    return request(app.getHttpServer())
      .get('/')
      .expect(200)
      .expect('Hello World!');
  });
});