import type { SqlClient, VersionDiffEntry, VersionDiffOptions } from "../../types.js";
import { type FilesystemOpsContext } from "./context.js";
/**
 * Compute the diff for a single history entry, by numeric `versionId` as
 * returned by `listHistory()`. Diffs the version against its parent (or
 * against an empty tree when `parentVersionId IS NULL`).
 *
 * Unlike `diff(label)`, this bypasses the label resolver, so it works for
 * deleted-but-retained versions and for the root entry. Optionally scope to
 * a subtree with `opts.path`.
 *
 * `before` is the parent's entry; `after` is the version's entry — i.e.
 * "what changed when this version was created".
 */
export declare const versionDiff: <TFs>(ctx: FilesystemOpsContext<TFs>, versionId: number, opts?: VersionDiffOptions) => Promise<VersionDiffEntry[]>;
export declare function resolveParentVersionId<TFs>(ctx: FilesystemOpsContext<TFs>, tx: SqlClient, versionId: number): Promise<number | null>;
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