From 676ed3ead7ad905e9e75940172d5357df55bc99c Mon Sep 17 00:00:00 2001
From: Klaus Meinhardt <klaus.meinhardt1@gmail.com>
Date: Mon, 6 May 2019 17:17:24 +0200
Subject: [PATCH 1/2] parseProjectReferenceConfigFile: always set
 SourceFile.path

---
 src/compiler/program.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index 6f7ffc2c3a972..b493a90d3f919 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -2699,11 +2699,12 @@ namespace ts {
                     projectReferenceRedirects.set(sourceFilePath, false);
                     return undefined;
                 }
-                sourceFile.path = sourceFilePath;
-                sourceFile.resolvedPath = sourceFilePath;
-                sourceFile.originalFileName = refPath;
                 commandLine = parseJsonSourceFileConfigFileContent(sourceFile, configParsingHost, basePath, /*existingOptions*/ undefined, refPath);
             }
+            sourceFile.path = sourceFilePath;
+            sourceFile.resolvedPath = sourceFilePath;
+            sourceFile.originalFileName = refPath;
+
             const resolvedRef: ResolvedProjectReference = { commandLine, sourceFile };
             projectReferenceRedirects.set(sourceFilePath, resolvedRef);
             if (commandLine.projectReferences) {

From 3c2f36890821cbd49149ba6b21580d898ab7760b Mon Sep 17 00:00:00 2001
From: Klaus Meinhardt <klaus.meinhardt1@gmail.com>
Date: Mon, 6 May 2019 21:31:20 +0200
Subject: [PATCH 2/2] add assert

---
 src/compiler/program.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index b493a90d3f919..6f331bb49ca1b 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -2688,6 +2688,7 @@ namespace ts {
                     return undefined;
                 }
                 sourceFile = Debug.assertDefined(commandLine.options.configFile);
+                Debug.assert(!sourceFile.path || sourceFile.path === sourceFilePath);
                 addFileToFilesByName(sourceFile, sourceFilePath, /*redirectedPath*/ undefined);
             }
             else {