rxjs----Rx在哪个包

Question

官网上的一段代码

var observable = Rx.Observable.create(function (observer) {
  observer.next(1);
  observer.next(2);
  observer.next(3);
  setTimeout(() => {
    observer.next(4);
    observer.complete();
  }, 1000);
});

问题

RX在哪个包

import {Rx} from 'rxjs'//不在这个包

Answer 1

import * as Rx from 'rxjs'