import { Subject } from 'rxjs';
export declare class MultiTabDetection {
    /**
     * @description Informs the listener that a new tab has been detected for the same browser session.
     * It also pass in the total number of tabs opened for the same browser session.
     */
    NewTabDetectedEvent: Subject<number>;
    /**
     * @description Informs the listener that an existing tab existed for the same browser session.
     */
    ExistingTabDetectedEvent: Subject<void>;
    /**
     * @description Informs the listener that a tab for the same browser session has been closed.
     * It also pass in the updated total number of tabs opened for the same browser session.
     */
    ClosedTabDetectedEvent: Subject<number>;
    private prefix;
    private initiatedNewTabMessage;
    private numberOfTabsOpened;
    private newTabValue;
    constructor();
    /**
     * @description Gets the total number of tabs opened. It is recommended to wait for 1 second
     * after receiving existingTabDetectedEvent before calling this property to get the accurate
     * total number of tabs opened.
     * @returns {number}
     */
    readonly NumberOfTabsOpened: number;
    private addListener;
    private setNewTab;
    private readonly newTabKey;
    private readonly existingTabKey;
    private readonly closingTabKey;
    private incrementNumberOfTabsOpened;
    private decrementNumberOfTabsOpened;
    private setKey;
    private setLocalStorageKeyValue;
    private getLocalStorageValue;
    private createUniqueKey;
    private createUniqueValue;
}