1 files changed, 48 insertions, 0 deletions
diff --git a/tools/language-server/src/plugins/css/service.ts b/tools/language-server/src/plugins/css/service.ts
new file mode 100644
index 000000000..78b11296e
--- /dev/null
+++ b/tools/language-server/src/plugins/css/service.ts
@@ -0,0 +1,48 @@
+import { getCSSLanguageService, getSCSSLanguageService, getLESSLanguageService, LanguageService, ICSSDataProvider } from 'vscode-css-languageservice';
+
+const customDataProvider: ICSSDataProvider = {
+  providePseudoClasses() {
+    return [];
+  },
+  provideProperties() {
+    return [];
+  },
+  provideAtDirectives() {
+    return [];
+  },
+  providePseudoElements() {
+    return [];
+  },
+};
+
+const [css, scss, less] = [getCSSLanguageService, getSCSSLanguageService, getLESSLanguageService].map((getService) =>
+  getService({
+    customDataProviders: [customDataProvider],
+  })
+);
+
+const langs = {
+  css,
+  scss,
+  less,
+};
+
+export function getLanguage(kind?: string) {
+  switch (kind) {
+    case 'scss':
+    case 'text/scss':
+      return 'scss' as const;
+    case 'less':
+    case 'text/less':
+      return 'less' as const;
+    case 'css':
+    case 'text/css':
+    default:
+      return 'css' as const;
+  }
+}
+
+export function getLanguageService(kind?: string): LanguageService {
+  const lang = getLanguage(kind);
+  return langs[lang];
+}