/**
 * Dismissal-cookie primitives — THE one implementation of "this surface was
 * dismissed", shared by every dismissible surface (announcement bar, floating
 * walkthrough video, and anything added later).
 *
 * The dismissal rule is an ID MATCH, never mere cookie presence: the cookie
 * stores the id of the LAST dismissed item, so publishing a NEW item re-shows
 * the surface while the old dismissal still suppresses the old item.
 *
 * No `"use client"` on purpose — `isDismissedCookieValue` is pure and is used by
 * server code (the hub's root layout reads the cookie during SSR to avoid a
 * flash); the DOM-touching helpers guard on `typeof document`.
 */
/** THE dismissal match rule. `undefined` id (nothing active) → not dismissed. */
export declare function isDismissedCookieValue(cookieValue: string | undefined, id: string | undefined): boolean;
/**
 * Read a dismissal cookie. Returns `undefined` when absent OR malformed:
 * `decodeURIComponent` throws `URIError` on bad percent-encoding, and callers
 * run this inside reveal paths where an uncaught throw would hide the surface
 * permanently. Failing open (treated as not-dismissed) is always the safe side.
 */
export declare function readDismissCookie(name: string): string | undefined;
/** Persist a dismissal (cookie only, 1 year). */
export declare function writeDismissCookie(name: string, id: string): void;
/** Clear a dismissal (test/story helper). */
export declare function clearDismissCookie(name: string): void;
//# sourceMappingURL=dismiss-cookie.d.ts.map