import { type H3Event } from "h3";
export declare const SESSION_UNAVAILABLE_ERROR_CODE = "session_unavailable";
export declare const SESSION_UNAVAILABLE_MESSAGE = "Your session could not be verified. Retry shortly.";
/**
 * Records that this request presented a session credential the server could
 * not check (the lookup threw). Such a request has no session, but it is not
 * signed out: answer a retryable 503, never a 401 that reads as "sign in
 * again". The first failure is kept; later ones are usually its echo.
 */
export declare function markSessionResolutionUnavailable(event: H3Event, source: string, error: unknown): void;
export declare function isSessionResolutionUnavailable(event: H3Event): boolean;
/**
 * Sends the lookup's real cause to the error tracker and the server log with
 * the request id the client also holds, once per request. Called where a null
 * session is handed to a consumer, so a lookup that a fallback path recovered
 * from is not reported.
 */
export declare function reportSessionResolutionUnavailable(event: H3Event): void;
export declare function sessionResolutionUnavailableError(): import("h3").HTTPError<unknown> & {
    errorCode: string;
    expected: boolean;
};