/**
* Resolves an overall shadow wrapper without cloning a non-empty host name onto a second semantic
* owner. An absent host label uses the component fallback; an explicitly empty one remains empty.
*/
export declare function overallSemanticLabel(host:Element,fallback?:string|null):string|null;
/** Omits a redundant overall wrapper role when a non-empty host label already owns the name. */
export declare function overallSemanticRole(host:Element,role:string):string|null;
/**
* Names a nested interactive owner by purpose instead of cloning the host's overall name. Only a
* genuinely decoratable primary media/frame opts into preserving an explicit empty host label.
*/
export declare function purposeAccessibleLabel(host:Element,fallback:string,options?:{allowExplicitEmpty?:boolean;}):string;