/**
* Resolves the name for a retrieval component's overall shadow semantic shell.
*
* A non-empty host `aria-label` already exposes the custom-element host as the named owner, so it
* must not be cloned onto (or accompanied by a fallback name on) a second overall owner in shadow
* DOM. An explicitly empty host label remains explicit on the shadow shell, while an absent label
* permits the component's localized/property-derived fallback.
*/
export declare function retrievalSemanticLabel(host:Element,fallback?:string|null):string|null;
/** Omits a redundant overall shadow role when a non-empty host label owns the component. */
export declare function retrievalSemanticRole(host:Element,role:string):string|null;