From 876e44bbc6eb2484273d19759da7db02b4063949 Mon Sep 17 00:00:00 2001
From: Sheetal Nandi <shkamat@microsoft.com>
Date: Fri, 9 Oct 2020 14:07:55 -0700
Subject: [PATCH] Handle extra file extensions when wild card directory watch
 is invoked (#41018)

Fixes #40495
---
 src/compiler/watchPublic.ts                   | 3 ++-
 src/testRunner/unittests/tscWatch/watchApi.ts | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/compiler/watchPublic.ts b/src/compiler/watchPublic.ts
index 2673b116810..e56fea37199 100644
--- a/src/compiler/watchPublic.ts
+++ b/src/compiler/watchPublic.ts
@@ -635,7 +635,7 @@ namespace ts {
 
         function reloadFileNamesFromConfigFile() {
             writeLog("Reloading new file names and options");
-            const result = getFileNamesFromConfigSpecs(configFileSpecs, getNormalizedAbsolutePath(getDirectoryPath(configFileName), currentDirectory), compilerOptions, parseConfigFileHost);
+            const result = getFileNamesFromConfigSpecs(configFileSpecs, getNormalizedAbsolutePath(getDirectoryPath(configFileName), currentDirectory), compilerOptions, parseConfigFileHost, extraFileExtensions);
             if (updateErrorForNoInputFiles(result, getNormalizedAbsolutePath(configFileName, currentDirectory), configFileSpecs, configFileParsingDiagnostics!, canConfigFileJsonReportNoInputFiles)) {
                 hasChangedConfigFileParsingErrors = true;
             }
@@ -748,6 +748,7 @@ namespace ts {
                         fileOrDirectoryPath,
                         configFileName,
                         configFileSpecs,
+                        extraFileExtensions,
                         options: compilerOptions,
                         program: getCurrentBuilderProgram(),
                         currentDirectory,
diff --git a/src/testRunner/unittests/tscWatch/watchApi.ts b/src/testRunner/unittests/tscWatch/watchApi.ts
index 6dcf1b30f7b..0e648aaa129 100644
--- a/src/testRunner/unittests/tscWatch/watchApi.ts
+++ b/src/testRunner/unittests/tscWatch/watchApi.ts
@@ -121,6 +121,11 @@ namespace ts.tscWatch {
             );
             const watch = createWatchProgram(watchCompilerHost);
             checkProgramActualFiles(watch.getProgram().getProgram(), [mainFile.path, otherFile.path, libFile.path]);
+
+            const other2 = `${projectRoot}/other2.vue`;
+            sys.writeFile(other2, otherFile.content);
+            checkSingleTimeoutQueueLengthAndRun(sys);
+            checkProgramActualFiles(watch.getProgram().getProgram(), [mainFile.path, otherFile.path, libFile.path, other2]);
         });
     });
 }