grafana/packages/grafana-runtime/src/utils/plugin.ts

import { config } from '../config';

// @ts-ignore
import System from 'systemjs/dist/system.js';

/**
 * Option to specify a plugin css that should be applied for the dark
 * and the light theme.
 *
 * @public
 */
export interface PluginCssOptions {
  light: string;
  dark: string;
}

/**
 * @internal
 */
export const SystemJS = System;

/**
 * Use this to load css for a Grafana plugin by specifying a {@link PluginCssOptions}
 * containing styling for the dark and the light theme.
 *
 * @param options - plugin styling for light and dark theme.
 * @public
 */
export function loadPluginCss(options: PluginCssOptions): Promise<any> {
  const theme = config.bootData.user.lightTheme ? options.light : options.dark;
  return SystemJS.import(`${theme}!css`);
}