]>
Commit | Line | Data |
---|---|---|
1 | import { uniq } from 'lodash-es' | |
2 | import { Observable } from 'rxjs' | |
3 | import { bufferTime, distinctUntilChanged, filter, map, share, switchMap } from 'rxjs/operators' | |
4 | ||
5 | function buildBulkObservable <P extends number | string, R> (options: { | |
6 | notifierObservable: Observable<P> | |
7 | time: number | |
8 | bulkGet: (params: P[]) => Observable<R> | |
9 | }) { | |
10 | const { notifierObservable, time, bulkGet } = options | |
11 | ||
12 | return notifierObservable.pipe( | |
13 | distinctUntilChanged(), | |
14 | bufferTime(time), | |
15 | filter(params => params.length !== 0), | |
16 | map(params => uniq(params)), | |
17 | switchMap(params => { | |
18 | return bulkGet(params) | |
19 | .pipe(map(response => ({ params, response }))) | |
20 | }), | |
21 | share() | |
22 | ) | |
23 | } | |
24 | ||
25 | export { | |
26 | buildBulkObservable | |
27 | } |