/**
 * Browser Renderer - Phase 2 Lambda Architecture
 *
 * This module provides web page rendering with three-tier fallback:
 *   1. Lambda renderer (Playwright on AWS Lambda x86_64) - if VISUS_RENDERER_URL set
 *   2. Local undici fetch() - fallback if Lambda unavailable
 *   3. Local Playwright - fallback if fetch() fails (e.g., SSL errors on macOS)
 *
 * CRITICAL: The sanitizer ALWAYS runs locally. Rendered HTML is returned from
 * Lambda to the local process before Claude sees it. PHI never touches Lateos infrastructure.
 */
import type { BrowserRenderResult, Result } from '../types.js';
/**
 * Render a web page using the best available renderer
 *
 * Rendering strategy:
 *   1. Lambda renderer (if VISUS_RENDERER_URL is set)
 *   2. Undici fetch() (fallback)
 *   3. If fetch fails with network error AND Lambda available → retry with Lambda
 *   4. If fetch fails and Lambda not available → use local Playwright
 *
 * @param url - The URL to fetch
 * @param options - Rendering options
 * @returns Result containing the page HTML and metadata
 */
export declare function renderPage(url: string, options?: {
    timeout_ms?: number;
    format?: 'html' | 'text' | 'markdown';
}): Promise<Result<BrowserRenderResult, Error>>;
/**
 * Check if a URL is accessible
 *
 * @param url - The URL to check
 * @param timeout_ms - Request timeout in milliseconds
 * @returns Result indicating if the URL is accessible
 */
export declare function checkUrl(url: string, timeout_ms?: number): Promise<Result<boolean, Error>>;
/**
 * Close browser instance and clean up resources
 * (No-op in Lambda architecture - included for compatibility)
 */
export declare function closeBrowser(): Promise<void>;
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