export interface IIdleTimer {
    /**
     * Restore initial state and restart timer.
     *
     * @returns whether the instance was started.
     */
    start(): boolean;
    /**
     * Restore initial state.
     *
     * @returns whether the instance was reset.
     */
    reset(): boolean;
    /**
     * Restore initial state and emit onActive if the user was prompted or idle.
     *
     * @returns whether the instance was activated.
     */
    activate(): boolean;
    /**
     * Store remaining time and stop timer.
     *
     * @returns whether the instance was paused.
     */
    pause(): boolean;
    /**
     * Resumes a paused timer.
     *
     * @returns whether the instance was resumed.
     */
    resume(): boolean;
    /**
     * Broadcast an arbitrary message to all instances of IdleTimer.
     *
     * @param data  Data to emit to `onMessage` callbacks.
     * @param emitOnSelf  Emit the event on the callee instance.
     *
     * @returns whether the message was sent.
     */
    message(data: string | number | object, emitOnSelf?: boolean): boolean;
    /**
    * Returns whether the user is idle.
    *
    * @returns Idle state.
    */
    isIdle(): boolean;
    /**
     * Returns whether the current tab is the leader.
     *
     * @returns Leader state.
     */
    isLeader(): boolean;
    /**
     * Returns whether the prompt is active.
     *
     * @returns Prompted state.
     */
    isPrompted(): boolean;
    /**
     * Returns whether this is the last active tab.
     *
     * @returns Last active state.
     */
    isLastActiveTab(): boolean;
    /**
     * Returns the current tabs id.
     */
    getTabId(): string;
    /**
     * Time remaining before idle or prompt.
     *
     * @returns Number of milliseconds until idle or prompt.
     */
    getRemainingTime(): number;
    /**
     * Time elapsed since last reset.
     *
     * @returns Number of milliseconds since the hook was last reset.
     */
    getElapsedTime(): number;
    /**
     * Time elapsed since mounted.
     *
     * @returns Number of milliseconds since the hook was mounted.
     */
    getTotalElapsedTime(): number;
    /**
     * Last time the user was idle.
     *
     * @returns A Date object that can be formatted.
     */
    getLastIdleTime(): Date | null;
    /**
     * Last time the user was active.
     *
     * @returns A Date object that can be formatted.
     */
    getLastActiveTime(): Date | null;
    /**
     * Time in milliseconds user has been idle since last reset.
     *
     * @returns Time in milliseconds the user has been idle.
     */
    getIdleTime(): number;
    /**
     * Total time in milliseconds user has been idle since the hook mounted.
     *
     * @returns Time in milliseconds the user has been idle.
     */
    getTotalIdleTime(): number;
    /**
     * Total time in milliseconds user has been active since last reset.
     *
     * @returns Time in milliseconds the user has been active.
     */
    getActiveTime(): number;
    /**
     * Total time in milliseconds user has been active since the hook mounted.
     *
     * @returns Time in milliseconds the user has been active.
     */
    getTotalActiveTime(): number;
}