/**
 * Reduces the given CSS width value to the next lowest even pixel value if the value is in px.
 * This is to mitigate subpixel rendering issues of embedded smart links.
 *
 * @param widthValue CSS width value to be rounded
 * @returns Reduced CSS width value where px value given, or otherwise the original value
 * @example
 */
export declare function roundToClosestEvenPxValue(widthValue: string): string;
