/** Matches OV25 `BED_ALLOW_NONE_QUERY_PARAM` (`bedAllowNone`). */
export declare const BED_IFRAME_ALLOW_NONE_QUERY_KEY = "bedAllowNone";
export type BedAllowNonePartsInput = {
    headboard: boolean;
    base: boolean;
    mattress: boolean;
};
/**
 * OV25 allow-list: comma-separated parts that may use “None”. Omitted param = all may use None.
 * @returns `undefined` when all three allow none (no query needed).
 */
export declare function serializeBedAllowNoneQueryValue(parts: BedAllowNonePartsInput): string | undefined;