import { EntitySnapshot, QueryPredicate } from 'tick-knock';
import { QueryRef } from '../lib/QueryRef';
export declare type SnapshotHandler = (snapshot: EntitySnapshot) => void;
export declare type UseQueryOptions = {
    added?: SnapshotHandler;
    removed?: SnapshotHandler;
};
export declare function useQuery(predicate: QueryPredicate, options?: UseQueryOptions): QueryRef;