import { DefaultTheme } from 'styled-components';
declare const combineStyles: (newTheme: {
    colors?: {
        [key: string]: string;
    } | undefined;
    sizes?: {
        [key: string]: string;
    } | undefined;
    fonts?: {
        [key: string]: string;
    } | undefined;
    breakpoints?: {
        [key: string]: string;
    } | undefined;
    spaces?: (string | number)[] | undefined;
    fontSizes?: (string | number)[] | undefined;
}) => DefaultTheme;
export default combineStyles;
