From aaf87735cce8df134c4c515890f7fb82a13948ac Mon Sep 17 00:00:00 2001
From: Iwata Hidetaka <iwata0303@gmail.com>
Date: Mon, 28 Nov 2016 23:28:23 +0900
Subject: [PATCH] tsserver: get candidates from <K extends keyof Foo> (fix
 #12536)

---
 src/services/completions.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/services/completions.ts b/src/services/completions.ts
index b710aa8cd78..f0daa696474 100644
--- a/src/services/completions.ts
+++ b/src/services/completions.ts
@@ -244,6 +244,9 @@ namespace ts.Completions {
         }
 
         function addStringLiteralCompletionsFromType(type: Type, result: CompletionEntry[]): void {
+            if (type && type.flags & TypeFlags.TypeParameter) {
+                type = typeChecker.getApparentType(type);
+            }
             if (!type) {
                 return;
             }