export interface SerializeStateOptions {
    /** `window.__<key>__` — defaults to `JORVEL_STATE`. */
    key?: string;
    /** CSP nonce. Must match base64url alphabet; emitted as `nonce="..."`. */
    nonce?: string;
}
export declare function serializeState(state: unknown, opts?: SerializeStateOptions): string;
export declare function hydrateState<T = unknown>(key?: string): T | undefined;
/**
 * Read and immediately delete the hydrated state in one step. Recommended over
 * `hydrateState` so PII / tokens don't linger on `window` for browser
 * extensions or DevTools to inspect.
 */
export declare function consumeHydratedState<T = unknown>(key?: string): T | undefined;
export declare function clearHydratedState(key?: string): void;
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