export declare function lockScroll(doc?: Document): void;
export declare function unlockScroll(doc?: Document): void;
/**
* Visible for testing. Resets the counter for the supplied document
* (defaults to the global `document`). Tests that lock a custom
* document (iframe, JSDOM alt-worker) must pass that same document
* here, otherwise the stale entry lives until the document itself
* is garbage collected.
*/
export declare function _resetScrollLock(doc?: Document): void;