From 36511838a437b0807992dc8d61d5fdd1523a80d1 Mon Sep 17 00:00:00 2001
From: Vladimir Matveev <vladima@microsoft.com>
Date: Mon, 14 Nov 2016 10:41:48 -0800
Subject: [PATCH] allow getting compiler options diagnostics when language
 service is disabled

---
 src/server/project.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/server/project.ts b/src/server/project.ts
index 6239ba1be2e..3e5c810e805 100644
--- a/src/server/project.ts
+++ b/src/server/project.ts
@@ -93,6 +93,7 @@ namespace ts.server {
     const emptyResult: any[] = [];
     const getEmptyResult = () => emptyResult;
     const getUndefined = () => <any>undefined;
+    const emptyEncodedSemanticClassifications = { spans: emptyResult, endOfLineState: EndOfLineState.None };
 
     export function createNoSemanticFeaturesWrapper(realLanguageService: LanguageService): LanguageService {
         return {
@@ -100,14 +101,15 @@ namespace ts.server {
             getSyntacticDiagnostics: (fileName) =>
                 fileName ? realLanguageService.getSyntacticDiagnostics(fileName) : emptyResult,
             getSemanticDiagnostics: getEmptyResult,
-            getCompilerOptionsDiagnostics: getEmptyResult,
+            getCompilerOptionsDiagnostics: () =>
+                realLanguageService.getCompilerOptionsDiagnostics(),
             getSyntacticClassifications: (fileName, span) =>
                 realLanguageService.getSyntacticClassifications(fileName, span),
             getEncodedSyntacticClassifications: (fileName, span) =>
                 realLanguageService.getEncodedSyntacticClassifications(fileName, span),
             getSemanticClassifications: getEmptyResult,
             getEncodedSemanticClassifications: () =>
-                ({ spans: [], endOfLineState: EndOfLineState.None }),
+                emptyEncodedSemanticClassifications,
             getCompletionsAtPosition: getUndefined,
             findReferences: getEmptyResult,
             getCompletionEntryDetails: getUndefined,