import type { Page } from 'playwright';
/**
 * Decorates the page object with custom assertions for testing browser interactions.
 * All assertions support automatic retries with configurable timeouts and poll intervals.
 *
 * @example
 * ```ts
 * // Assert element exists
 * await page.assertExists('.login-button')
 *
 * // Assert page title
 * await page.assertTitle('Login Page')
 *
 * // Assert URL contains substring
 * await page.assertUrlContains('/dashboard')
 *
 * // Assert element text
 * await page.assertText('h1', 'Welcome')
 * ```
 */
export declare const addAssertions: {
    /**
     * Adds assertion methods to the page object
     *
     * @param page - The Playwright page instance to decorate
     * @param _context - The browser context (unused but required by decorator interface)
     * @param config - Plugin configuration with assertion settings
     */
    page(page: Page, _context: import("playwright").BrowserContext, config: import("../types/main.js").PluginConfig): void;
};