import { QueryDef, QueryDefAggregation } from '../types.js';
import { StepInput, aggFnOptions } from './types.js';
import { QueryBranch } from '../BasedDbQuery.js';
import { AggregateType } from '@based/protocol/db-read';
export declare const aggregateToBuffer: (aggregates: QueryDefAggregation) => Uint8Array;
export declare const groupBy: (q: QueryBranch<any>, field: string, StepInput: StepInput) => void;
export declare const addAggregate: (query: QueryBranch<any>, type: AggregateType, propNames: string[], option?: aggFnOptions) => void;
export declare const isRootCountOnly: (def: QueryDef, filterSize: number) => boolean;