import { QueryObserver } from '@tanstack/query-core';
import type { QueryKey, QueryObserverOptions, QueryObserverResult } from '@tanstack/query-core';
import type { ReactiveController, ReactiveControllerHost } from 'lit';
import type { QueryClientHost } from '../mixins/query-client.mixin.js';
export type { QueryObserverOptions };
export declare class QueryController<TQueryFnData = unknown, TError = unknown, TData = TQueryFnData, TQueryData = TQueryFnData, TQueryKey extends QueryKey = QueryKey> implements ReactiveController {
    protected host: ReactiveControllerHost & QueryClientHost;
    protected optionsFn?: (() => QueryObserverOptions<TQueryFnData, TError, TData, TQueryData, TQueryKey>) | undefined;
    result?: QueryObserverResult<TData, TError>;
    protected queryObserver?: QueryObserver<TQueryFnData, TError, TData, TQueryData, TQueryKey>;
    protected unsubscribe?: () => void;
    protected hostPropertyName?: string;
    constructor(host: ReactiveControllerHost & QueryClientHost, optionsFn?: (() => QueryObserverOptions<TQueryFnData, TError, TData, TQueryData, TQueryKey>) | undefined, hostPropertyName?: string);
    observeQuery(options: QueryObserverOptions<TQueryFnData, TError, TData, TQueryData, TQueryKey> | (() => QueryObserverOptions<TQueryFnData, TError, TData, TQueryData, TQueryKey>), optimistic?: boolean): void;
    hostUpdate(): void;
    hostConnected(): void;
    subscribe(): Promise<void>;
    hostDisconnected(): void;
}