/**
 * Server-Sent Events (SSE) client utility
 *
 * Handles POST-based SSE connections for streaming execution and generation updates.
 * Uses fetch with streaming response body parsing.
 */
export interface SSEConnectionHandlers<T> {
    onMessage: (event: T) => void;
    onError: (error: Error) => void;
    onClose: () => void;
}
export interface SSEConnection {
    abort: () => void;
}
/**
 * Create an SSE connection using POST request with JSON body.
 *
 * SSE typically uses GET, but we need POST to send workflow data.
 * This implements manual SSE parsing over a fetch streaming response.
 */
export declare function createSSEConnection<T>(url: string, body: unknown, handlers: SSEConnectionHandlers<T>): SSEConnection;