import { StreamCallbacks } from '../types/agent.types';
/**
 * Process SSE stream from fetch response.
 *
 * Handles named events (event: + data:) and default message events (data: only).
 * Supported named events:
 *   - event: thinking  → ignored (future use)
 *   - event: carousel  → calls callbacks.onCarousel with parsed image array
 *   - event: toolcall  → calls callbacks.onToolCall with the label string
 * Special data values:
 *   - [DONE]      → calls onComplete and stops
 *   - [CANCELLED] → calls onComplete and stops
 */
export declare function processSSEStream(response: Response, callbacks: StreamCallbacks): Promise<void>;
/**
 * Create an AbortController for canceling streams
 */
export declare function createStreamController(): {
    controller: AbortController;
    signal: AbortSignal;
    abort: () => void;
};