import { EtaRenderHost } from "../../controllers/eta-renderer/eta-types.js";
import { ReactiveController } from "lit";
export type { EtaRenderHost } from "../../controllers/eta-renderer/eta-types.js";
export declare class EtaRenderController implements ReactiveController {
    private host;
    private _etaRenderTask;
    private _cache;
    private _observer;
    private _renderer;
    private _renderInProgress;
    private _etaIdleWaiters;
    private _mutationRequested;
    constructor(host: EtaRenderHost);
    get taskComplete(): Promise<unknown>;
    waitForIdle(): Promise<void>;
    hostConnected(): void;
    hostDisconnected(): void;
    private _scheduleMutationRender;
    private _isEtaIdle;
    private _notifyEtaIdle;
}