import { User } from "@blocknote/core";
import { VersionSnapshot } from "@blocknote/core/extensions";
/**
 * Reads users from the versioning extension's user store, loading any that
 * aren't cached yet. Re-renders only when one of the requested users changes
 * (the store uses a shallow `Map` comparison).
 *
 * Versioning-scoped: it reads the store the {@link VersioningExtension} builds
 * from its `resolveUsers` option and exposes on its instance, so it must be
 * used within a versioning UI where that extension is registered.
 */
export declare function useVersionUsers<U extends User = User>(userIds: string[]): Map<string, U>;
/**
 * Computes the secondary label to display for a snapshot row: the snapshot's
 * explicit `secondaryLabel` when set, otherwise its `by` author ids resolved
 * to usernames (falling back to the raw id for users the store can't
 * resolve). Reactive: re-renders as user info loads into the store.
 */
export declare function useSnapshotLabel(snapshot: VersionSnapshot | undefined): string | undefined;