import { Browser, Page } from 'puppeteer';
export interface BrowserOptions {
    headful?: boolean;
    timeout?: number;
    debug?: boolean;
}
export interface ScrapingContext {
    browser: Browser;
    page: Page;
    debug: boolean;
    providerName: string;
}
/**
 * Launch browser with robust configuration
 */
export declare function launchBrowser(headful?: boolean): Promise<Browser>;
/**
 * Create a new page with stealth settings
 */
export declare function createStealthPage(browser: Browser): Promise<Page>;
/**
 * Sleep utility
 */
export declare function sleep(ms: number): Promise<void>;
/**
 * Retry wrapper with exponential backoff
 */
export declare function withRetry<T>(fn: () => Promise<T>, options?: {
    retries?: number;
    delay?: number;
    name?: string;
}): Promise<T | null>;
/**
 * Save debug screenshot
 */
export declare function saveDebugScreenshot(page: Page, providerName: string, suffix?: string): Promise<string | null>;
/**
 * Extract price from text using multiple patterns
 */
export declare function extractPrice(text: string): {
    price: number;
    currency: string;
    raw: string;
} | null;
/**
 * Find lowest price from multiple price strings
 */
export declare function findLowestPrice(priceStrings: string[]): {
    price: number;
    currency: string;
    raw: string;
} | null;
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