TypeError: Cannot read properties of undefined (reading 'enabled') in CompareFeatures renderRow
Nobody has claimed this yet.
Assessment
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Newbie friendliness
- 76/100
- Issue type
- Bug
- Clarity
- Clearly specified
- Activity status
- Quiet
- Tech stack
- javascript, react, typescript
- Domain
- frontend
Research direction
Start in web/components/CompareFeatures.js at renderRow, then trace how rows are supplied through web/components/PanelSearch.tsx. Reproduce the compare page case where a feature exists in only one environment and inspect the relevant frontend tests or test setup. Done means the compare page renders those rows without reading enabled from an undefined state.
Written by the indexing model from the issue text.
Description
Sentry: FLAGSMITH-FRONTEND-58S
TypeError: Cannot read properties of undefined (reading 'enabled')
Where
web/components/CompareFeatures.js → renderRow, reached via web/components/PanelSearch.tsx.
Impact
1 event, 1 user affected. First and last seen 2026-08-05T08:45Z. Sentry priority: high.
Release 1785847145636, Chrome 151, production.
URL: https://app.flagsmith.com/project/12472/compare
In-app frames
./web/components/PanelSearch.tsx Al
./web/components/PanelSearch.tsx renderContainer
<anonymous> Array.map
./web/components/PanelSearch.tsx <anonymous>
./web/components/CompareFeatures.js <object>.{children#2}.renderRow
Likely cause
A row on the project compare page where one side of the comparison has no
feature state, so .enabled is read from undefined. renderRow probably
needs a guard for features present in one environment but not the other.
Slack alert · filed by the sentry-triage skill
- Dominant language
- Python
- Stars
- 6.6k
- Forks
- 571
- Avg merge
- 1d 16h
- Merged PRs (30d)
- 116
Contributor guide
First steps
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- Open a pull request that references the issue number.
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