我们希望缓冲数据,直到达到以下两个事件,例如去抖时间达到 5 或值更改。但是根据下面的测试,我们发现它不能正常工作。
我想要实现的行为是。
a)当值发生变化时,我想发出这些缓冲值。
b)当达到去抖时间时,我想发出缓冲值。
import {
mergeMap,
tap,
map,
takeUntil,
concatMap,
throttle,
throttleTime,
debounceTime,
distinctUntilChanged,
bufferWhen,
} from 'rxjs/operators';
import { of, from, race } from 'rxjs';
import 'jest';
describe('test ', () => {
const source$ = from([
{ name: 'Brian' },
{ name: 'Joe' },
{ name: 'Joe' },
{ name: 'Joe' },
{ name: 'Joe' },
{ name: 'Sue' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Brian' },
{ name: 'Joe' },
{ name: 'Joe' },
{ name: 'Sue' }
]);
const distinctEvent$ = source$.pipe(
distinctUntilChanged((prev, curr) => prev.name === curr.name),
tap(() => console.log('-1-- AFTER DISTINCT'))
)
const batch$ = source$.pipe(
bufferWhen(() =>
race(
distinctEvent$,
source$.pipe(debounceTime(5)),
),
),
);
it('test', () => {
batch$.subscribe(() => {
console.log('--only');
});
});
});