diff --git a/src/typingsInstaller/nodeTypingsInstaller.ts b/src/typingsInstaller/nodeTypingsInstaller.ts
index 56d6c7ac938..7c66ca29f56 100644
--- a/src/typingsInstaller/nodeTypingsInstaller.ts
+++ b/src/typingsInstaller/nodeTypingsInstaller.ts
@@ -81,7 +81,7 @@ interface ExecSyncOptions {
     encoding: "utf-8";
 }
 
-export class NodeTypingsInstaller extends ts.server.typingsInstaller.TypingsInstaller {
+class NodeTypingsInstaller extends ts.server.typingsInstaller.TypingsInstaller {
     private readonly npmPath: string;
     readonly typesRegistry: Map<string, MapLike<string>>;