/** Shared heading-level vocabulary for component-owned visible titles. */
export type LyraHeadingLevel='1'|'2'|'3'|'4'|'5'|'6'|'none';export type LyraResolvedHeadingLevel=Exclude<LyraHeadingLevel,'none'>;
/**
* Resolves the public heading vocabulary to ARIA's positive level. `none` is the explicit
* semantic opt-out; untyped or attribute callers that provide another value retain the established
* level-three fallback used by the accordion family.
*/
export declare function resolveHeadingLevel(value:string):LyraResolvedHeadingLevel|undefined;