/**
 * Options for configuring storage behaviour.
 */
export type StorageHandlerOptions = {
    /**
     * When `true`, prefer `localStorage` over cookies.
     * Falls back to cookies if `localStorage` is unavailable (e.g. disabled in the browser).
     */
    force_local_storage?: boolean;
};
/**
 * Contract that all storage backends must satisfy.
 */
export type StorageBackend = {
    getItem(key: string): string | null | undefined;
    removeItem(key: string): void;
    setItem(key: string, value: string, options?: Cookies.CookieAttributes): void;
};