/**
* Ref-counted scroll lock, scoped to a given `Document` (defaults to the
* caller's own top-level `document`) so it also works for content rendered
* inside an iframe or any other document the caller explicitly passes.
* Compensates for the removed scrollbar's width with inline-end padding on
* the root element, so locking scroll doesn't shift page content
* horizontally the instant the scrollbar disappears — restored to its prior
* value once the last outstanding lock releases. Safe when a lock is
* acquired and released more than once concurrently (e.g. a fast
* open/close/open sequence).
*/
export declare function lockScroll(doc?:Document):()=>void;