From 5a19e30c27f354600d9b273adb702c5eda503886 Mon Sep 17 00:00:00 2001
From: Jason Ramsay <jasonra@microsoft.com>
Date: Wed, 10 May 2017 11:38:10 -0700
Subject: [PATCH] In shims.ts resolveModuleName should only return resolved
 modules found in ts files (.ts, .d.ts, .tsx)

---
 src/services/shims.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/services/shims.ts b/src/services/shims.ts
index 29e24568460..498c1834a60 100644
--- a/src/services/shims.ts
+++ b/src/services/shims.ts
@@ -1038,7 +1038,11 @@ namespace ts {
             return this.forwardJSONCall(`resolveModuleName('${fileName}')`, () => {
                 const compilerOptions = <CompilerOptions>JSON.parse(compilerOptionsJson);
                 const result = resolveModuleName(moduleName, normalizeSlashes(fileName), compilerOptions, this.host);
-                const resolvedFileName = result.resolvedModule ? result.resolvedModule.resolvedFileName : undefined;
+                let resolvedFileName = result.resolvedModule ? result.resolvedModule.resolvedFileName : undefined;
+                if (result.resolvedModule && result.resolvedModule.extension !== Extension.Ts && result.resolvedModule.extension !== Extension.Tsx && result.resolvedModule.extension !== Extension.Dts) {
+                    resolvedFileName = undefined;
+                }
+
                 return {
                     resolvedFileName,
                     failedLookupLocations: result.failedLookupLocations