import type { StateGS } from "./StateGS";
export declare function setStateHeadTagGS(state: StateGS, key: string, tagName: "meta" | "link" | "script", attributes: Readonly<Record<string, string>>, textContent: string): void;
export declare function removeStateHeadTagGS(state: StateGS, key: string): void;
/** Apply title, built-in metadata and custom state tags to a browser or server document. */
export declare function applyStateHeadGS(document: Document, state: StateGS, defaultCanonicalUrl: string): void;
/** Adopt server-managed metadata so BrowserFromServer does not discard dynamic SSR head values. */
export declare function adoptStateHeadGS(document: Document, state: StateGS): void;