export type SessionHint = {
    /** Unix seconds the session's access credential dies at. */
    expiresAt: number;
    /** Unix seconds renewal stops being possible at, when the backend states it. */
    refreshExpiresAt?: number;
};
/**
 * Reads the session hint your backend publishes beside its httpOnly session cookie (see `sessionHintCookie` in the
 * space settings). It answers, with no request, the one question local storage cannot: whether this browser holds a
 * session that some other page — a sibling app on the same domain, a social sign-in redirect — established.
 *
 * Its absence is an answer too, and the more valuable one: a configured hint that is not there means nobody is signed
 * in, which is how a signed-out visitor gets a page rendered without a round trip to be told so.
 */
export declare const readSessionHint: (cookieName?: string) => SessionHint | undefined;