import { LangMessages, LangMessage } from "../../messages";
import type { LangMessageItem, LangMessageItemText, LangMessageItemTool, LangMessageItemImage } from "../../messages";
import { MessageItem } from "../responses-stream-types";
type OpenAIResponseItem = {
    id: string;
    type: string;
    targetMessage?: LangMessage;
    [key: string]: any;
};
/**
 * Stream response handler for the OpenAI Responses API
 */
export declare class OpenAIResponseStreamHandler {
    id: string;
    items: OpenAIResponseItem[];
    itemIdToMessageItemIndex: Map<string, number>;
    itemIdToSummaryIndex: Map<string, number>;
    newMessage: LangMessage;
    messages: LangMessages;
    onResult?: (result: LangMessage) => void;
    constructor(messages: LangMessages, onResult?: (result: LangMessage) => void);
    handleEvent(data: any): void;
    handleNewResponse(data: any): void;
    handleNewItem(data: any): void;
    handleItemFinished(data: any): void;
    applyItemToMessage(resItem: OpenAIResponseItem, messageItem: LangMessageItem): void;
    applyTextMessage(res: MessageItem, target: LangMessageItemText): void;
    applyFunctionCall(res: any, target: LangMessageItemTool): void;
    applyPatchCall(res: any, target: LangMessageItemTool): void;
    applyImageGenerationCall(res: any, target: LangMessageItemImage): void;
    getNewMessageItem(itemId: string): LangMessageItem | undefined;
    applyTextDelta(data: any): void;
    applyToolArgsDelta(data: any): void;
    applyReasoningSummaryTextDelta(data: any): void;
}
export {};