import type { ChatHistoryPage, ChatHistoryRole } from "../context/ChatHistoryContext.js";
import type { Message } from "../types.js";
export declare function selectChatHistoryPage(messages: readonly Message[], options: {
    cursor?: number;
    from?: "end" | "start";
    limit: number;
    query?: string;
    roles?: readonly ChatHistoryRole[];
}): Pick<ChatHistoryPage, "cursor" | "matchedMessages" | "matchedStats" | "messages" | "nextCursor" | "previousCursor" | "totalMessages" | "totalStats">;