import type { ResponseItem } from "./types.js";
export type StreamCallbacks = {
    onTextDelta?: (delta: string) => void;
    onReasoningDelta?: (delta: string) => void;
    onConversationId?: (id: string) => void;
    onItems?: (items: ResponseItem[]) => void;
    onUsage?: (usage: {
        promptTokens?: number;
        completionTokens?: number;
        totalTokens?: number;
    }) => void;
    shouldStop?: () => boolean;
    onStop?: () => void;
};
export declare function normalizeDataFrames(raw: unknown): {
    conversationId?: string;
    items: ResponseItem[];
};
export declare function consumeStream(response: Response, callbacks: StreamCallbacks): Promise<void>;
export declare function formatStreamItem(item: ResponseItem): string | null;