import { PresentationSnapshot } from 'pptx-viewer-shared';
export interface PresenterSessionOptions {
    getSource: () => Uint8Array | ArrayBuffer | null | undefined;
    getSlideIndex: () => number;
    onAudienceSlide: (index: number) => void;
    onAudienceExit: () => void;
}
export declare class PresenterSession {
    private readonly options;
    audienceOpen: boolean;
    snapshot: PresentationSnapshot;
    readonly audienceSessionId: string | null;
    readonly isAudience: boolean;
    private channel;
    private audienceWindow;
    private presenterSessionId;
    private sequence;
    constructor(options: PresenterSessionOptions);
    connect(): void;
    openAudience(): boolean;
    /**
     * Move the console to the audience screen and the audience display to this
     * one (the presenter console's "Swap Displays"). Resolves `false` when there
     * is no audience window, when the browser withholds the Window Management
     * permission, or when both windows already sit on the same screen, which is
     * why the strip's control is disabled until a display is open.
     */
    swapDisplays(): Promise<boolean>;
    sync(slideIndex?: number): void;
    updateSnapshot(patch: Partial<PresentationSnapshot>): void;
    closeAudience(): void;
    dispose(): void;
    private getChannel;
}
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