import { type AggregateSpec } from "firebase/firestore";
import { FirestoreState, type FirestoreStateOptions, type PathParam } from "./FirestoreState.svelte.js";
type CollectionAggregateStateOptions = Omit<FirestoreStateOptions<any, any>, "pathFunctionOrString" | "fromFirestore" | "toFirestore"> & {
    path: PathParam;
    aggregate: AggregateSpec;
};
export declare class CollectionAggregateState<AggregateData = Record<string, unknown>> extends FirestoreState<any, any, AggregateData | null> {
    private readonly aggregate;
    private queryRef;
    constructor({ auth, firestore, path: pathFunctionOrString, listen, aggregate }: CollectionAggregateStateOptions);
    private get_collection_from_path;
    protected init(): Promise<void>;
    protected fetch_data(): Promise<void>;
    protected listen_data(): Promise<void>;
}
export {};