/**
 * Streaming server-side rendering for async directives.
 *
 * @packageDocumentation
 */
import { RenderOptions } from '../types.js';
import { ServiceRegistry } from '../resolver-config.js';
import type { DirectiveRegistry } from './render.js';
/**
 * Set the services registry for streaming (mirrors render.ts registerService).
 *
 * @internal
 */
export declare function setStreamServices(services: ServiceRegistry): void;
/**
 * Render HTML as a ReadableStream, streaming async directive replacements.
 *
 * @remarks
 * 1. Calls `render()` with an internal collector for stream-mode chunks
 * 2. Enqueues the initial HTML (containing fallbacks)
 * 3. For each pending chunk: awaits the fn, renders the template, emits
 *    a `<script>` that swaps innerHTML by `data-g-async-id`
 * 4. Closes the stream
 *
 * @param html - The HTML template string
 * @param state - The state object for expression evaluation
 * @param registry - The directive registry
 * @param options - Optional rendering configuration
 * @returns A ReadableStream of HTML string chunks
 */
export declare function renderStream(html: string, state: Record<string, unknown>, registry: DirectiveRegistry, options?: RenderOptions): ReadableStream<string>;