import { stardust } from '@nebula.js/stardust';
import type { ExtendedTheme, BackgroundColors } from './types';
type ChartBackgroundResolver = (theme: stardust.Theme) => string | undefined;
/**
 * The colors in the chart can depend on background colors set on the chart, object and sheet level.
 * Even though not officially supported, it is expected that css settings on object and sheet are respected.
 * The priority order is: chart theme > object css > object theme
 * If the result for object/chart background is transparent, the sheet css color is used
 */
export declare const getBackgroundColors: (theme: ExtendedTheme, rootElement: HTMLElement, chartBackgroundResolver?: ChartBackgroundResolver, objectBackgroundResolver?: ChartBackgroundResolver) => BackgroundColors;
declare const useExtendedTheme: (rootElement: HTMLElement, chartBackgroundResolver?: ChartBackgroundResolver, objectBackgroundResolver?: ChartBackgroundResolver) => ExtendedTheme;
export default useExtendedTheme;