import type { CheckpointInfo, RewindResultExtended, SessionRewinder } from '../types/session-rewinder.js';
export interface SessionRewinderOptions {
    sessionsDir: string;
    /** The project root directory; used to validate rewind targets stay inside it. */
    projectRoot: string;
}
/**
 * Rewind engine that reads session JSONL files and reverts file system
 * changes to any previous checkpoint.
 */
export declare class DefaultSessionRewinder implements SessionRewinder {
    private readonly sessionsDir;
    private readonly projectRoot;
    constructor(sessionsDir: string, projectRoot: string);
    private sessionFile;
    private readEvents;
    listCheckpoints(sessionId: string): Promise<CheckpointInfo[]>;
    rewindToCheckpoint(sessionId: string, checkpointIndex: number): Promise<RewindResultExtended>;
    rewindLastN(sessionId: string, n: number): Promise<RewindResultExtended>;
    rewindToStart(sessionId: string): Promise<RewindResultExtended>;
}
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