export declare const SNAPSHOT_HASH_CAP: number;
interface FileSnapshot {
    readonly size: number;
    readonly digest?: string;
    readonly mtimeMs?: number;
    readonly kind: string;
    readonly target?: FileSnapshot;
}
export type WorktreeSnapshot = ReadonlyMap<string, FileSnapshot>;
/** Include ignored files and symlink targets; realpath ancestry breaks directory loops. */
export declare function snapshotWorktree(root: string): Promise<WorktreeSnapshot>;
/** Cache storage may not exist before the first dispatch; other read errors fail closed. */
export declare function snapshotOptionalDirectory(root: string): Promise<WorktreeSnapshot>;
export declare function changedSnapshotPaths(before: WorktreeSnapshot, after: WorktreeSnapshot): string[];
export {};