export type ImageComparatorOptions = {
    maxDiffPixelRatio?: number;
    maxDiffPixels?: number;
    threshold?: number;
};
export type ComparatorResult = {
    diff: Buffer;
    error?: string;
    similarity: number;
    /**
     * Whether the images are different sizes.
     */
    sizeMismatch: boolean;
};
/**
 * It's based on the playwright implementation and will
 * generate the same diff image as we would get from the playwright.
 */
export declare function getImageDifferences(actualBuffer: Buffer, expectedBuffer: Buffer, options?: ImageComparatorOptions): ComparatorResult;
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