/**
 * Minimal Server-Sent Events parser for provider streaming responses.
 *
 * All three target providers (OpenAI, Anthropic, Google) expose SSE streams
 * over `fetch`. This helper turns the raw `ReadableStream<Uint8Array>` into
 * an async iterable of `{ event, data }` objects. It tolerates CR/LF, blank
 * separator lines, and multi-line `data:` fields.
 */
interface SseEvent {
    event?: string;
    data: string;
}
export declare function parseSSE(body: ReadableStream<Uint8Array>, signal?: AbortSignal): AsyncGenerator<SseEvent, void, unknown>;
export {};
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