Feature Edge-Case Checklist for Data, State, Access, and UXFeature Edge-Case Checklist for Data, State, Access, and UX
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Noah Wainwright
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• 2d
If you're not sure where to start, throw these into claude for your next feature ↓
Data volume: what it shows with no data, one item, and thousands of items.
Content: what happens with long text, special characters, and other languages.
States: what it shows while loading, on failure, and on partial success.
Network: what happens when the connection drops, times out, or the API returns an error.
Access: what a user without permission sees, and whether it says why.
Conflicts: what happens on a double click, or when two users edit the same record.
Interruption: what happens when a user leaves partway and comes back.
Consistency: whether its labels, states, and behavior match the two closest features in the repo.
Design EngineeringDesign Systemsskills
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