/**
 * Used to keep track of memory slots used by open instances of the UI
 * Each browser instance uses a different slot, with a max number of
 * slots available
 */
export declare class BrowserSlot {
    browserId: string;
    lastUsed: number;
    id: string;
    constructor(browserId: string, offset: number);
    static GetSlot(browserId: string): Promise<string>;
    private static BrowserSlots;
    private static UpdateBrowserSlots;
}