/**
 * Ref-counting scroll lock utility.
 *
 * Multiple consumers (Dialog, CommandPalette, etc.) can call `lockScroll()`
 * independently. The body overflow is only restored when **all** consumers
 * have released their locks.
 *
 * Usage:
 *   const unlock = lockScroll();
 *   // … later, when the overlay closes:
 *   unlock();
 */
export declare function lockScroll(): () => void;