[App Arch] migrate legacy CSS to new platform (core_plugins/kibana_react)

src/legacy/core_plugins/kibana_react/index.ts

@@ -17,7 +17,6 @@
  * under the License.
  */
 
-import { resolve } from 'path';
 import { Legacy } from '../../../../kibana';
 
 // eslint-disable-next-line import/no-default-export
@@ -33,7 +32,6 @@ export default function DataPlugin(kibana: any) {
     init: (server: Legacy.Server) => ({}),
     uiExports: {
       injectDefaultVars: () => ({}),
-      styleSheetPaths: resolve(__dirname, 'public/index.scss'),
     },
   };
 

src/plugins/kibana_react/public/index.ts

@@ -25,7 +25,7 @@ export * from './ui_settings';
 export * from './field_icon';
 export * from './table_list_view';
 export * from './split_panel';
-export { Markdown, MarkdownSimple } from './markdown';
+export * from './markdown';
 export { reactToUiComponent, uiToReactComponent } from './adapters';
 export { useUrlTracker } from './use_url_tracker';
 export { toMountPoint } from './util';

src/plugins/kibana_react/public/markdown/markdown.tsx

@@ -23,6 +23,7 @@ import MarkdownIt from 'markdown-it';
 import { memoize } from 'lodash';
 import { getSecureRelForTarget } from '@elastic/eui';
 
+import './index.scss';
 /**
  * Return a memoized markdown rendering function that use the specified
  * whiteListedRules and openLinksInNewTab configurations.