Use original Error object for uncaught errors when provided

In case of uncaught errors, mocha would print the error message, which is essentially the first line of the stack trace. The actual stack trace was unused.
mochajs · Jan 18, 2024 · 0d4042f · 0d4042f
1 parent 53a4baf
commit 0d4042f
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/browser-entry.js b/browser-entry.js
@@ -71,8 +71,11 @@ process.listenerCount = function (name) {
 
 process.on = function (e, fn) {
   if (e === 'uncaughtException') {
-    global.onerror = function (err, url, line) {
-      fn(new Error(err + ' (' + url + ':' + line + ')'));
+    global.onerror = function (err, url, line, colno, error) {
+      if (!error) {
+        error = new Error(err + ' (' + url + ':' + line + ')');
+      }
+      fn(error);
       return !mocha.options.allowUncaught;
     };
     uncaughtExceptionHandlers.push(fn);