import { FieldPath } from './FieldPath';
import { CollectionReference, Query, QueryConstraint, QuerySnapshot, AggregateField, AggregateSpec, AggregateSpecData, AggregateQuerySnapshot } from '../types/index';
export declare function getCanonicalQueryKey(collectionPath: string, constraints: QueryConstraint[]): string;
export declare function validateAndDeduplicateServerDocs(docs: any[]): Array<{
    id: string;
    fields: any;
}>;
export declare const query: <T = any>(queryObject: Query<T> | CollectionReference<T>, ...queryConstraints: QueryConstraint[]) => Query<T>;
export declare const getCachedDocs: <T = any>(queryOrCollection: Query<T> | CollectionReference<T>, fromCache?: boolean) => QuerySnapshot<T>;
export declare const getDocs: <T = any>(queryOrCollection: Query<T> | CollectionReference<T>) => Promise<QuerySnapshot<T>>;
export declare const count: () => AggregateField<number>;
export declare const sum: (field: string | FieldPath) => AggregateField<number>;
export declare const average: (field: string | FieldPath) => AggregateField<number | null>;
export declare const getAggregateFromServer: <T extends AggregateSpec>(queryOrCollection: Query<any> | CollectionReference<any>, aggregateSpec: T) => Promise<AggregateQuerySnapshot<AggregateSpecData<T>>>;
export declare const getCountFromServer: <T = any>(queryOrCollection: Query<T> | CollectionReference<T>) => Promise<AggregateQuerySnapshot<{
    count: number;
}>>;