/**
 * Initialize browser with Playwright configuration
 * @param playwrightConfig - JavaScript config file content (playwright.config.js)
 * @param headless - Override headless mode (optional)
 * @param playwrightConfigFilePath - Path to playwright config file (optional)
 * @param logger - Optional logger callback for capturing logs
 * @returns Browser, context, and page instances
 */
export declare function initializeBrowser(playwrightConfigContent?: string, headless?: boolean, playwrightConfigFilePath?: string, logger?: (message: string, level?: 'log' | 'error' | 'warn') => void): Promise<{
    browser: any;
    context: any;
    page: any;
}>;
/**
 * Capture an optimized screenshot for vision API calls
 * - Sets temporary viewport to reduce image size
 * - Uses JPEG compression
 * - Returns base64 data URL
 *
 * @param page - Playwright page instance
 * @param options - Screenshot options
 * @param log - Optional logger callback
 * @returns Data URL string (data:image/jpeg;base64,...)
 */
export declare function captureOptimizedScreenshot(page: any, options?: {
    quality?: number;
    width?: number;
    height?: number;
    timeout?: number;
}, log?: (message: string) => void): Promise<string>;
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