import { TheiaBrowser } from '@theia-extension-tester/theia-browser';
export declare class CheTheiaBrowser extends TheiaBrowser {
    private mainWindowHandle?;
    protected isAttachedToFrame(): boolean;
    private attachToFrame;
    closeCurrentBrowserTab(timeout?: number): Promise<string>;
    waitForWorkbench(timeout?: number): Promise<void>;
}