import { ChromecastDevice, StratoChannel } from "stratocaster";
import { IApp } from "../app";
export declare const MEDIA_NS = "urn:x-cast:com.google.cast.media";
export interface IBaseAppProps {
    appId: string;
    sessionNs: string;
}
export declare abstract class BaseApp implements IApp, IBaseAppProps {
    protected device: ChromecastDevice;
    appId: string;
    sessionNs: string;
    private app;
    private session;
    constructor(device: ChromecastDevice, props: IBaseAppProps);
    start(): Promise<void>;
    protected ensureCastSession(): Promise<StratoChannel>;
    protected joinOrRunNamespace(ns: string): Promise<StratoChannel>;
    protected requestStatus(): Promise<import("stratocaster").IReceiverStatus>;
    private ensureApp;
    private joinOrRunSession;
}