2 files changed, 18 insertions, 0 deletions
diff --git a/cli/tsc/99_main_compiler.js b/cli/tsc/99_main_compiler.js
index ad661e087..73bab249e 100644
--- a/cli/tsc/99_main_compiler.js
+++ b/cli/tsc/99_main_compiler.js
@@ -660,6 +660,16 @@ delete Object.prototype.__proto__;
           ),
         );
       }
+      case "getEncodedSemanticClassifications": {
+        return respond(
+          id,
+          languageService.getEncodedSemanticClassifications(
+            request.specifier,
+            request.span,
+            ts.SemanticClassificationFormat.TwentyTwenty,
+          ),
+        );
+      }
       case "getImplementation": {
         return respond(
           id,
diff --git a/cli/tsc/compiler.d.ts b/cli/tsc/compiler.d.ts
index 1488f1b02..13e6564b4 100644
--- a/cli/tsc/compiler.d.ts
+++ b/cli/tsc/compiler.d.ts
@@ -56,6 +56,7 @@ declare global {
     | GetDefinitionRequest
     | GetDiagnosticsRequest
     | GetDocumentHighlightsRequest
+    | GetEncodedSemanticClassifications
     | GetImplementationRequest
     | GetNavigationTree
     | GetOutliningSpans
@@ -144,6 +145,13 @@ declare global {
     filesToSearch: string[];
   }
 
+  interface GetEncodedSemanticClassifications
+    extends BaseLanguageServerRequest {
+    method: "getEncodedSemanticClassifications";
+    specifier: string;
+    span: ts.TextSpan;
+  }
+
   interface GetImplementationRequest extends BaseLanguageServerRequest {
     method: "getImplementation";
     specifier: string;