import type { StateStore } from '../state';
export interface FileStateStoreOptions {
    /** Absolute or relative path to the persistence file. */
    filePath: string;
}
/**
 * Placeholder for a file-backed state store adapter.
 * Implementations should manage locking/concurrency and JSON serialization.
 */
export declare function createFileStateStore(_options: FileStateStoreOptions): StateStore;
