/**
 * Zoe SDK — HTTP response helpers
 *
 * Converts StreamTextResult into HTTP-friendly SSE responses
 * using the Web API Response and ReadableStream interfaces.
 *
 * Delegates to StreamManager for SSE generation.
 */
import type { StreamTextResult } from "../../core/types.js";
export interface SSEOptions {
    headers?: Record<string, string>;
}
/**
 * Formats a single Server-Sent Events message.
 *
 * @param event  The SSE event name
 * @param data   The payload (will be JSON-serialised)
 * @returns      A string in SSE wire format: `event: ...\ndata: ...\n\n`
 */
export declare function createSSEMessage(event: string, data: unknown): string;
/**
 * Converts a StreamTextResult into a SSE-formatted ReadableStream.
 *
 * Delegates to the StreamManager's toSSEStream() for actual event generation.
 * The result's toSSEStream() emits events in the correct order:
 *  - `text`      — incremental text deltas
 *  - `tool_call` — tool invocations
 *  - `tool_result` — tool execution results
 *  - `done`      — final usage and finish reason
 */
export declare function toSSEStream(result: StreamTextResult, _options?: SSEOptions): ReadableStream;
/**
 * Converts a StreamTextResult into a Web API `Response` with an SSE body.
 *
 * Delegates to the StreamManager's toResponse() which sets standard SSE headers:
 *  - `Content-Type: text/event-stream`
 *  - `Cache-Control: no-cache`
 *  - `Connection: keep-alive`
 *
 * @param result   The streaming result to convert
 * @param options  Optional extra headers to merge into the response
 */
export declare function toResponse(result: StreamTextResult, options?: SSEOptions): Response;