From b4a2aa8d85ddabc238ffddf4205f5ea5b36f71ad Mon Sep 17 00:00:00 2001
From: Menno <1247698+MennoTammens@users.noreply.github.com>
Date: Mon, 6 Oct 2025 09:58:33 +0200
Subject: [PATCH] Don't try to access properties of undefined diagnostic file
 object

---
 src/typescript.ts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/typescript.ts b/src/typescript.ts
index fd60a798..783277ff 100644
--- a/src/typescript.ts
+++ b/src/typescript.ts
@@ -81,10 +81,11 @@ export async function run(fileNames: string[], options: ts.CompilerOptions): Pro
   allDiagnostics.forEach(diagnostic => {
     if (!diagnostic.file) {
       console.log(diagnostic)
+    } else {
+      const { line, character } = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start)
+      const message = ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n')
+      console.log(`${diagnostic.file.fileName} (${line + 1},${character + 1}): ${message}`)
     }
-    const { line, character } = diagnostic.file.getLineAndCharacterOfPosition(diagnostic.start)
-    const message = ts.flattenDiagnosticMessageText(diagnostic.messageText, '\n')
-    console.log(`${diagnostic.file.fileName} (${line + 1},${character + 1}): ${message}`)
   })
 
   if (emitResult.emitSkipped) {
@@ -169,4 +170,4 @@ export function getTypescriptCompileFiles(
     return  configParseResult.fileNames.map(f => f.replace(cwd + '/', ''))
   }
   return []
-}
\ No newline at end of file
+}