From a4f835345e495f45b40365f025afce72d1817996 Mon Sep 17 00:00:00 2001
From: Blechhirn <manuel.wellmann@blechhirn.de>
Date: Thu, 19 May 2016 14:45:43 +0200
Subject: [PATCH] Don't call path.dirname with null/undefined

Node 6+ enforces the parameter to path.dirname to be a string (https://github.com/nodejs/node/commit/08085c49b6e49ecfffd638c6cd46f4de639ae4f4). The empty string results in the previous behavior.
---
 index.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.ts b/index.ts
index 04b6881d4..b861e284c 100644
--- a/index.ts
+++ b/index.ts
@@ -250,13 +250,13 @@ function ensureTypeScriptInstance(loaderOptions: LoaderOptions, loader: any): {
         configParseResult = (<TSCompatibleCompiler><any>compiler).parseJsonConfigFileContent(
             configFile.config,
             compiler.sys,
-            path.dirname(configFilePath)
+            path.dirname(configFilePath || '')
         );
     } else {
         configParseResult = (<TSCompatibleCompiler><any>compiler).parseConfigFile(
             configFile.config,
             compiler.sys,
-            path.dirname(configFilePath)
+            path.dirname(configFilePath || '')
         );
     }