Fixed expand frame exception

pallets · Oct 6, 2021 · f408b25 · f408b25
1 parent bf4efb7
commit f408b25
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/CHANGES.rst b/CHANGES.rst
@@ -37,6 +37,8 @@ Unreleased
 -   Fix type annotation in ``CallbackDict``, because it is not
     utilizing a bound TypeVar. :issue:`2235`
 -   Fix setting CSP header options on the response. :pr:`2237`
+-   Fix an issue lines not expanding on click in the interactive
+    debugger for very long tracebacks. :pr:`2239`
 
 
 Version 2.0.1

diff --git a/src/werkzeug/debug/shared/debugger.js b/src/werkzeug/debug/shared/debugger.js
@@ -21,9 +21,9 @@ docReady(() => {
 });
 
 function addToggleFrameTraceback(frames) {
-  frames.forEach((frame, i) => {
+  frames.forEach((frame) => {
     frame.addEventListener("click", () => {
-      frame.getElementsByTagName("pre")[i].parentElement.classList.toggle("expanded");
+      frame.getElementsByTagName("pre")[0].parentElement.classList.toggle("expanded");
     });
   })
 }