the-biergarten-app/src/Website/.storybook/main.ts

import type { StorybookConfig } from '@storybook/react-vite';

const config: StorybookConfig = {
   stories: [
      '../stories/Configure.mdx',
      '../stories/SubmitButton.stories.tsx',
      '../stories/FormField.stories.tsx',
      '../stories/Navbar.stories.tsx',
      '../stories/Toast.stories.tsx',
      '../stories/Themes.stories.tsx',
   ],
   addons: [
      '@chromatic-com/storybook',
      '@storybook/addon-vitest',
      '@storybook/addon-a11y',
      '@storybook/addon-docs',
      '@storybook/addon-onboarding',
   ],
   framework: '@storybook/react-vite',
   async viteFinal(config) {
      config.plugins = (config.plugins ?? []).filter((plugin) => {
         if (!plugin) {
            return true;
         }

         const pluginName = typeof plugin === 'object' && 'name' in plugin ? plugin.name : '';
         return !pluginName.startsWith('react-router');
      });

      config.build ??= {};
      config.build.rollupOptions ??= {};

      const previousOnWarn = config.build.rollupOptions.onwarn;
      config.build.rollupOptions.onwarn = (warning, warn) => {
         if (warning.code === 'MODULE_LEVEL_DIRECTIVE') {
            return;
         }

         if (typeof previousOnWarn === 'function') {
            previousOnWarn(warning, warn);
            return;
         }

         warn(warning);
      };

      return config;
   },
};
export default config;