Enable building typescript.d.ts with current source

src/server/editorServices.ts

@@ -335,6 +335,7 @@ namespace ts.server {
         RootOfInferredProjectFalse = "Open file was set as not inferred root",
     }
 
+    /*@internal*/
     interface ConfigFileExistenceInfo {
         /**
          * Cached value of existence of config file

src/server/tsconfig.json

@@ -1,8 +1,8 @@
 {
     "extends": "../tsconfig-base",
     "compilerOptions": {
-        "removeComments": true,
-        "outFile": "../../built/local/server.js",
+        "removeComments": false,
+        "outFile": "../../built/local/server/server.js",
         "preserveConstEnums": true,
         "types": [
             "node"