export declare const checkApiKeyExistsStore: {
    get: (key: string) => Promise<boolean | undefined>;
    set: (key: string, value: boolean) => Promise<void>;
    delete: (key: string) => Promise<void>;
    wrap: (key: string, fn: () => boolean | Promise<boolean>) => Promise<boolean>;
};
/**
 * Early reject requests with already existing UUIDs/api keys to avoid
 * running the whole registration process and its rules.
 * TODO: Consider removing this once pine supports rule narrowing on multiple resources.
 */
export declare function gracefullyDenyConflictingRegistrations(uuid: string, apiKey: string | null | undefined): Promise<void>;