import { Query as QueryOrig, QuerySnapshot as QuerySnapshotOrig, QueryConstraint } from "firebase/firestore";
import { Entity } from ".";
import { IFieldMeta, _ICollection, _IQuery } from "./types";
import QuerySnapshot from "./QuerySnapshot";
/**
 * Firestorm representation of a query. Queries can be chained
 * together, as per the standard firestore SDK.
 * @typeparam T The entity for the query.
 */
export default class _Query<T extends Entity> implements _IQuery<T> {
    private _Entity;
    private _collection;
    private _native;
    private _fields;
    /**
     * Create a collection query for an [[Entity]].
     * @param Entity T The entity to represent.
     * @param collection The collection to query.
     * @param fields The list of field for the collection.
     * @param native The native firestore query.
     */
    constructor(Entity: new () => T, collection: _ICollection<T>, fields: Map<string, IFieldMeta>, native: QueryOrig);
    get native(): QueryOrig;
    /**
     * Attaches a listener to the query.
     * @param onNext Callback which is called when new snapshot is available.
     * @param onError Callback which is called when an error occurs.
     * @returns An unsubscribe function.
     */
    /**
     * Appends a query to the current query.
     * @param query The query to append.
     */
    appendNativeQuery(query: QueryOrig): _Query<T>;
    /**
     * Creates a firestorm snapshot from the firestore snapshot.
     * @param nativeSnapshot The native query document snapshot.
     */
    buildSnapshot(nativeSnapshot: QuerySnapshotOrig): QuerySnapshot<T>;
}
export declare const _getDocs: <T extends Entity>(query: _IQuery<T>) => Promise<QuerySnapshot<T>>;
export declare const _onSnapshotDocs: <T extends Entity>(query: _Query<T>, onNext: (snapshot: QuerySnapshot<T>) => void, onError?: ((error: Error) => void) | undefined) => (() => void);
export declare function _query<T extends Entity>(query_: _IQuery<T>, ...queryConstraints: QueryConstraint[]): _Query<T>;
export declare function _query<T extends Entity>(query_: _ICollection<T>): _Query<T>;