/** Minimal SSE parser for the knowledge chat stream: `event:`/`data:` lines, events split on blank lines. */
export interface SseEvent {
    event?: string;
    data: string;
}
/**
 * Parse one SSE byte stream into events.
 * @param body - the response body stream.
 * @returns events in stream order; multi-`data:` events join with newlines per the SSE spec.
 */
export declare function parseSseStream(body: ReadableStream<Uint8Array>): AsyncGenerator<SseEvent>;