type Callback = () => void;
/**
 * Manages window focus and blur events.
 *
 * @class
 * @category SDK
 * @subcategory Internal
 * @param {Callback} onActivityCallback - Callback to invoke when the window gains focus.
 * @param {Callback} onInactivityCallback - Callback to invoke when the window loses focus.
 */
export declare class WindowActivityManager {
    private readonly onActivityCallback;
    private readonly onInactivityCallback;
    constructor(onActivityCallback: Callback, onInactivityCallback: Callback);
    /**
     * Handles the focus event and invokes the activity callback.
     * @private
     */
    private handleFocus;
    /**
     * Handles the blur event and invokes the inactivity callback.
     * @private
     */
    private handleBlur;
    /**
     * Handles the visibility change event and invokes appropriate callbacks.
     * @private
     */
    private handleVisibilityChange;
    /**
     * Checks if the current window has focus.
     * @returns {boolean} True if the window has focus; otherwise, false.
     */
    hasFocus: () => boolean;
}
export {};