import { WebDriver } from 'selenium-webdriver';
type ImageSnapshotOptions = {
    hideSelectors?: string[];
    sleep?: number;
    tolerance?: number;
    ignoreCaret?: boolean;
    timeout?: number;
};
type ImageSnapshotResult = {
    same?: boolean;
};
/**
 * Takes a screenshot of a single element (by selector) and compares/updates the reference image.
 *
 * Behavior is:
 *  1. Wait for the element to appear.
 *  2. Optionally sleep, then hide any selectors passed in `hideSelectors`.
 *  3. Call the WebElement.takeScreenshot() API to get only that element’s bitmap.
 *  4. If a file already exists at outputPath, compare it (with looks-same). If identical, stop.
 *     Otherwise, overwrite the file (unless SKIP_IMAGE_UPLOAD_AND_FAIL is set, in which case throw).
 *  5. Restore hidden elements.
 *
 * @param driver      A WebDriver instance.
 * @param selector    CSS selector for the element to snapshot. (First match only.)
 * @param outputPath  Path where the screenshot PNG should live (and be compared/overwritten).
 * @param options     Optional hideSelectors, sleep, tolerance, etc.
 */
export declare function snapshotImage(driver: WebDriver, selector: string, outputPath: string, options?: ImageSnapshotOptions): Promise<ImageSnapshotResult>;
/**
 * Takes an image snapshot of view port.
 *
 * The image is compared using [looks-same](https://www.npmjs.com/package/looks-same) before overwriting.
 *
 * @example
 * await snapshotViewPort(driver, `${artifactsPath}/column-menu.png`, {
 *     hideSelectors: ['div#demoToolbar']
 * });
 *
 * @param driver WebDriver instance
 * @param outputPath The path to the screenshot file to be created or updated.
 * @param options Screenshot options.
 */
export declare function snapshotViewPort(driver: any, outputPath: string, options?: ImageSnapshotOptions): Promise<ImageSnapshotResult>;
export {};