import type { SqlClient, VersionDiffEntry } from "../../types.js";
import { type FilesystemOpsContext } from "./context.js";
/**
 * Single batched query that computes per-version changes for an entire
 * `listHistory` page. Replaces the N round trips one would make by calling
 * `fetchVersionChanges` per entry. Uses the COW shortcut on the "after"
 * side and resolves parent visibility per (owner_version, path).
 *
 * Root entries (parent_version_id IS NULL) flow through the same query —
 * the closure-table join naturally yields no parent rows for them, so all
 * their writes surface as `added`.
 *
 * Returns a map keyed by `versionId` for easy zip-up with the page rows.
 * Versions in `versionIds` with no changes get an empty array; missing
 * versions are omitted.
 */
export declare const fetchPageChanges: <TFs>(ctx: FilesystemOpsContext<TFs>, tx: SqlClient, versionIds: number[], scopeLtree: string, pathsOnly: boolean) => Promise<Map<number, VersionDiffEntry[]>>;
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