2 files changed, 51 insertions, 1 deletions
diff --git a/cli/tsc/99_main_compiler.js b/cli/tsc/99_main_compiler.js
index dc2b59533..ad661e087 100644
--- a/cli/tsc/99_main_compiler.js
+++ b/cli/tsc/99_main_compiler.js
@@ -726,6 +726,33 @@ delete Object.prototype.__proto__;
           ts.getSupportedCodeFixes(),
         );
       }
+      case "prepareCallHierarchy": {
+        return respond(
+          id,
+          languageService.prepareCallHierarchy(
+            request.specifier,
+            request.position,
+          ),
+        );
+      }
+      case "provideCallHierarchyIncomingCalls": {
+        return respond(
+          id,
+          languageService.provideCallHierarchyIncomingCalls(
+            request.specifier,
+            request.position,
+          ),
+        );
+      }
+      case "provideCallHierarchyOutgoingCalls": {
+        return respond(
+          id,
+          languageService.provideCallHierarchyOutgoingCalls(
+            request.specifier,
+            request.position,
+          ),
+        );
+      }
       default:
         throw new TypeError(
           // @ts-ignore exhausted case statement sets type to never
diff --git a/cli/tsc/compiler.d.ts b/cli/tsc/compiler.d.ts
index 0b1f5e4de..1488f1b02 100644
--- a/cli/tsc/compiler.d.ts
+++ b/cli/tsc/compiler.d.ts
@@ -63,7 +63,10 @@ declare global {
     | GetReferencesRequest
     | GetSignatureHelpItemsRequest
     | GetSmartSelectionRange
-    | GetSupportedCodeFixes;
+    | GetSupportedCodeFixes
+    | PrepareCallHierarchy
+    | ProvideCallHierarchyIncomingCalls
+    | ProvideCallHierarchyOutgoingCalls;
 
   interface BaseLanguageServerRequest {
     id: number;
@@ -185,4 +188,24 @@ declare global {
   interface GetSupportedCodeFixes extends BaseLanguageServerRequest {
     method: "getSupportedCodeFixes";
   }
+
+  interface PrepareCallHierarchy extends BaseLanguageServerRequest {
+    method: "prepareCallHierarchy";
+    specifier: string;
+    position: number;
+  }
+
+  interface ProvideCallHierarchyIncomingCalls
+    extends BaseLanguageServerRequest {
+    method: "provideCallHierarchyIncomingCalls";
+    specifier: string;
+    position: number;
+  }
+
+  interface ProvideCallHierarchyOutgoingCalls
+    extends BaseLanguageServerRequest {
+    method: "provideCallHierarchyOutgoingCalls";
+    specifier: string;
+    position: number;
+  }
 }