/// <reference types="testcafe" />
import type { IComparerOptions, SelectorType } from './options';
export declare function compareScreenshot(t: TestController, screenshotName: string, element?: SelectorType, comparisonOptions?: Partial<IComparerOptions>): Promise<boolean>;
export interface ScreenshotsComparer {
    takeScreenshot: (screenshotName: string, element?: SelectorType, comparisonOptions?: Partial<IComparerOptions> | undefined) => Promise<boolean>;
    compareResults: {
        isValid: () => boolean;
        errorMessages: () => string;
    };
}
export declare function createScreenshotsComparer(t: TestController): ScreenshotsComparer;