问当作为变量类型时，接口和InstanceType<typeof Class>有什么不同？

EN

export interface IHttpService {
  request(): Promise<any>;
  formPostRequest(): any;
}

export class HttpService implements IHttpService {
  public async request() {
    //
  }

  public formPostRequest() {
    //
  }
}

import { HttpService } from './HttpService';

class GoogleAccount {
  private httpService: InstanceType<typeof HttpService>;
  constructor(httpService: InstanceType<typeof HttpService>) {
    this.httpService = httpService;
  }

  public findGoogleAccountById(id: string) {
    return this.httpService.request();
  }
}

import { IHttpService } from './HttpService';

class GoogleAccount2 {
  private httpService: IHttpService;
  constructor(httpService: IHttpService) {
    this.httpService = httpService;
  }

  public findGoogleAccountById(id: string) {
    return this.httpService.request();
  }
}