/**
 * Snapshot a page's CURRENT document before an overwrite. Callers pass the
 * pre-update state; the row records what the save replaced, so "restore
 * revision N" recovers exactly what the editor saw before save N+1.
 * Prunes to the newest `keep` revisions per page.
 */
export declare function storeRevision(pageId: number, snapshot: PageDocumentSnapshot, options?: { authorId?: number | null, note?: string | null, keep?: number }): Promise<number>;
export declare function fetchRevisions(pageId: number, limit?: number): Promise<PageRevisionRow[]>;
/**
 * Copy a revision's document back onto its page. The page's current state is
 * snapshotted first, so a restore is itself undoable.
 */
export declare function restoreRevision(revisionId: number, options?: { authorId?: number | null }): Promise<void>;
export declare interface PageDocumentSnapshot {
  title: string
  blocks: string | null
  metaDescription: string | null
}
export declare interface PageRevisionRow {
  id: number
  page_id: number
  author_id: number | null
  revision: number
  title: string
  blocks: string | null
  meta_description: string | null
  note: string | null
  created_at: string | null
}