TypeError: Cannot read properties of undefined (reading 'length')
- Dominant language
- Ruby
- Stars
- 548
- Forks
- 168
- Avg merge
- 1d 3h
- Merged PRs (30d)
- 28
Description
## Error
```
Cannot read properties of undefined (reading 'length')
```
## Stack trace
```
../node_modules/@codemirror/view/dist/index.js:627 in ChildCursor.findPos
../node_modules/@codemirror/view/dist/index.js:3087 in DocView.domAtPos
../node_modules/@codemirror/view/dist/index.js:2942 in DocView.updateSelection
../node_modules/@codemirror/view/dist/index.js:7571 in EditorView.update
../node_modules/@codemirror/view/dist/index.js:7465 in this.dispatchTransactions
../node_modules/@codemirror/view/dist/index.js:7489 in EditorView.dispatch
../node_modules/@codemirror/autocomplete/dist/index.js:1230 in completionPlugin.accept
../node_modules/@codemirror/autocomplete/dist/index.js:1181 in completionPlugin.scheduleAccept
../node_modules/@codemirror/autocomplete/dist/index.js:1172 in
```
## Tracking Details
- **Project**: exercism-js
- **Sentry**: [TypeError: Cannot read properties of undefined (reading 'length')](https://thalamus-ai.sentry.io/issues/101663055/)
- **Culprit**: ChildCursor.findPos(@codemirror/view/dist/index)
- **First seen:** Mar 8, 2026
Contributor guide
Assessment
This issue has not been assessed yet.