interface UserActivityState {
    isActive: boolean;
    isTyping: boolean;
    isScrolling: boolean;
    isMovingMouse: boolean;
    idleSeconds: number;
    mousePosition: {
        x: number;
        y: number;
    };
    scrollPosition: {
        x: number;
        y: number;
    };
    focusedElement: string | null;
    visibilityState: 'visible' | 'hidden' | 'prerender' | 'unloaded';
    windowFocused: boolean;
    screenSize: {
        width: number;
        height: number;
    };
    touchDevice: boolean;
    batteryLevel: number | null;
    batteryCharging: boolean | null;
    networkType: string | null;
    networkDownlink: number | null;
    orientation: {
        alpha: number;
        beta: number;
        gamma: number;
    } | null;
}
declare function useUserActivity(enabled?: boolean): UserActivityState;
/** Format for system prompt injection. */
declare function activityToContextString(s: UserActivityState): string;

export { type UserActivityState, activityToContextString, useUserActivity };