Rxjs运算符延迟不会延迟of的发射值

import { of } from 'rxjs';
import { delay } from 'rxjs/operators';

const source = of(1, 2, 3);
const delayedSource = source.pipe(delay(2000)); // 延迟2秒发射值

delayedSource.subscribe(value => console.log(value)); // 2秒后输出：1, 2, 3

import { of, interval } from 'rxjs';
import { delayWhen } from 'rxjs/operators';

const source = of(1, 2, 3);
const delayObservable = interval(2000); // 每2秒发射一个值

const delayedSource = source.pipe(delayWhen(() => delayObservable));
delayedSource.subscribe(value => console.log(value)); // 每2秒后输出：1, 2, 3

import { of } from 'rxjs';
import { timeout } from 'rxjs/operators';

const source = of(1, 2, 3);
const timeoutValue = 2000; // 设置超时时间为2秒

const timeoutSource = source.pipe(timeout(timeoutValue));
timeoutSource.subscribe(
  value => console.log(value),
  error => console.error(error) // 2秒后输出：TimeoutError: Timeout has occurred
);