From 1a9b0f6f7a03ccdc825f92c654b8ca991f27d3fc Mon Sep 17 00:00:00 2001
From: Tobias Koppers <tobias.koppers@googlemail.com>
Date: Tue, 19 Sep 2023 15:46:26 +0200
Subject: [PATCH] improve internal error logging (#55582)

### What?

Makes sure that errors that have no user code in stack trace still show
an stack trace


Closes WEB-1605
---
 .../next/src/server/dev/log-app-dir-error.ts  | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/packages/next/src/server/dev/log-app-dir-error.ts b/packages/next/src/server/dev/log-app-dir-error.ts
index 7247b192f4c0d..a4c0a3314b641 100644
--- a/packages/next/src/server/dev/log-app-dir-error.ts
+++ b/packages/next/src/server/dev/log-app-dir-error.ts
@@ -3,12 +3,11 @@ import * as Log from '../../build/output/log'
 
 export function logAppDirError(err: any) {
   if (isError(err) && err?.stack) {
-    const filteredStack = err.stack
-      .split('\n')
-      .map((line: string) =>
-        // Remove 'webpack-internal:' noise from the path
-        line.replace(/(webpack-internal:\/\/\/|file:\/\/)(\(.*\)\/)?/, '')
-      )
+    const cleanedStack = err.stack.split('\n').map((line: string) =>
+      // Remove 'webpack-internal:' noise from the path
+      line.replace(/(webpack-internal:\/\/\/|file:\/\/)(\(.*\)\/)?/, '')
+    )
+    const filteredStack = cleanedStack
       // Only display stack frames from the user's code
       .filter(
         (line: string) =>
@@ -16,8 +15,12 @@ export function logAppDirError(err: any) {
           !/node_modules[\\/]/.test(line) &&
           !/node:internal[\\/]/.test(line)
       )
-      .join('\n')
-    Log.error(filteredStack)
+    if (filteredStack.length === 1) {
+      // This is an error that happened outside of user code, keep full stack
+      Log.error(`Internal error: ${cleanedStack.join('\n')}`)
+    } else {
+      Log.error(filteredStack.join('\n'))
+    }
     if (typeof (err as any).digest !== 'undefined') {
       console.error(`digest: ${JSON.stringify((err as any).digest)}`)
     }