remove connection status from lib

client/lib/patch-db.ts

@@ -1,32 +1,27 @@
-import { Observable } from 'rxjs'
-import { concatMap, finalize, map, tap } from 'rxjs/operators'
+import { merge, Observable } from 'rxjs'
+import { concatMap, finalize, tap } from 'rxjs/operators'
 import { Source } from './source/source'
 import { Store } from './store'
 import { DBCache } from './types'
+
 export { Operation } from 'fast-json-patch'
 
 export class PatchDB<T extends object> {
   store: Store<T>
-  connectionStatus$ = this.source.connectionStatus$
 
   constructor (
-    private readonly source: Source<T>,
+    private readonly sources: Source<T>[],
     readonly cache: DBCache<T>,
   ) {
     this.store = new Store(cache)
   }
 
   sync$ (): Observable<DBCache<T>> {
-    console.log('PATCHDB - sync$()')
-
-    const sequence$ = this.store.watchAll$().pipe(map(cache => cache.sequence))
-    // nested concatMaps, as it is written, ensure sync is not run for update2 until handleSyncResult is complete for update1.
-    // flat concatMaps would allow many syncs to run while handleSyncResult was hanging. We can consider such an idea if performance requires it.
-    return this.source.watch$(sequence$).pipe(
-      tap(update => console.log('PATCHDB - source updated:', update)),
-      concatMap(update => this.store.update$(update)),
+    return merge(...this.sources.map(s => s.watch$(this.store)))
+    .pipe(
+      tap(update => this.store.update(update)),
+      concatMap(() => this.store.watchCache$()),
       finalize(() => {
-        console.log('PATCHDB - FINALIZING sync$()')
         this.store.reset()
       }),
     )