import type { Browser, Page } from 'playwright';
export declare function createBrowser(): Promise<{
    browser: Browser;
    teardown: () => Promise<void>;
}>;
export declare function visitPage(browser: Browser, url: string): Promise<Page>;
export declare function elementExists(page: Page, selector: string): Promise<boolean>;
export declare function countElementsOnPage(page: Page, selector: string): Promise<number>;
export declare function getNumberOfContainers(page: Page, selectors: string[]): Promise<number>;
export declare function validateNumberOfContainers(page: Page, url: string, expected: number, containers: string[]): Promise<{
    text: string;
    expected: number;
    received: number;
    page: string;
} | undefined>;
export declare function getStyleProperty(page: Page, selector: string, property: string): Promise<string>;
export declare function getAnimationDuration(page: Page, selector: string): Promise<number>;
export declare function validateAnimationDuration(page: Page, selector: string): Promise<void>;
export declare function validateAnimationStyles(page: Page, selector: string, styles: string[]): Promise<void>;
export declare function crawlSiteForUrls(url: string): Promise<string[]>;