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node_modules/@angular/fire/compat/database/observable/fromRef.d.ts

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+import { AngularFireAction, DatabaseQuery, DatabaseSnapshot, ListenEvent } from '../interfaces';
+import { Observable, SchedulerLike } from 'rxjs';
+/**
+ * Create an observable from a Database Reference or Database Query.
+ * @param ref Database Reference
+ * @param event Listen event type ('value', 'added', 'changed', 'removed', 'moved')
+ * @param listenType 'on' or 'once'
+ * @param scheduler - Rxjs scheduler
+ */
+export declare function fromRef<T>(ref: DatabaseQuery, event: ListenEvent, listenType?: string, scheduler?: SchedulerLike): Observable<AngularFireAction<DatabaseSnapshot<T>>>;