Files
patch-db/client/lib/patch-db.ts
2022-08-17 15:15:58 -06:00

19 lines
504 B
TypeScript

import { map, Observable, shareReplay } from 'rxjs'
import { tap } from 'rxjs/operators'
import { Store } from './store'
import { DBCache, Update } from './types'
export class PatchDB<T> {
public store: Store<T> = new Store(this.initialCache)
public cache$ = this.source$.pipe(
tap(res => this.store.update(res)),
map(_ => this.store.cache),
shareReplay(1),
)
constructor(
private readonly source$: Observable<Update<T>>,
private readonly initialCache: DBCache<T>,
) {}
}