/// <reference types="react" />
/**
 * Handle scroll locking to ensure a good dragging experience on Android and iOS.
 *
 * On iOS the following may happen if scroll isn't locked:
 * - When dragging the sheet the background gets dragged at the same time.
 * - When dragging the page scroll is also affected, causing the drag to feel buggy and "slow".
 *
 * On Android it causes the chrome toolbar to pop down as you drag down, and hide as you drag up.
 * When it's in between two toolbar states it causes the framerate to drop way below 60fps on
 * the bottom sheet drag interaction.
 */
export declare function useScrollLock({ targetRef, enabled, reserveScrollBarGap, }: {
    targetRef: React.RefObject<Element>;
    enabled: boolean;
    reserveScrollBarGap: boolean;
}): import("react").MutableRefObject<{
    activate: () => void;
    deactivate: () => void;
}>;