import { OriFirestoreError, OriSnapshotListenOptions, OnSnapshot } from '../types';
export declare const isOptions: (arg: import("@firebase/firestore").SnapshotListenOptions | ((error: OriFirestoreError) => void) | (() => void) | undefined) => arg is import("@firebase/firestore").SnapshotListenOptions;
export declare const onSnapshot: OnSnapshot;