import { LangChainBaseMessage } from "./types.js";
//#region src/findForkCheckpointInHistory.d.ts
type ForkCheckpointHistoryState = {
  values?: Record<string, unknown> | undefined;
  checkpoint?: {
    checkpoint_id?: string | null | undefined;
  } | undefined;
};
type ForkHistoryCursor = {
  configurable: {
    checkpoint_id: string;
  };
};
type ForkCheckpointClient = {
  threads: {
    getHistory: (threadId: string, options?: {
      limit?: number;
      before?: ForkHistoryCursor;
    }) => Promise<readonly ForkCheckpointHistoryState[]>;
  };
};
declare const findForkCheckpointInHistory: (client: ForkCheckpointClient, threadId: string, messagesUpToParent: readonly LangChainBaseMessage[], messagesKey: string, pageSize?: number) => Promise<string | null>;
//#endregion
export { ForkCheckpointClient, findForkCheckpointInHistory };
//# sourceMappingURL=findForkCheckpointInHistory.d.ts.map