fix: add optional chaining to onHeaderCell call in HeaderRow.tsx #1340
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Walkthrough在 src/Header/HeaderRow.tsx 中，将对 column.onHeaderCell 的调用改为使用可选链调用 column?.onHeaderCell?.(column)，以在函数存在时才执行。其余逻辑保持不变，additionalProps 仍为 React.HTMLAttributes 并传递给 Cell 组件。 Changes
Estimated code review effort🎯 1 (Trivial) | ⏱️ ~2 minutes Poem
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Summary of Changes
Hello @afc163, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request enhances the stability of the HeaderRow component by implementing a defensive coding practice. The change ensures that the application gracefully handles scenarios where a specific callback function might not be present, thereby preventing unexpected crashes and improving overall robustness.
Highlights
- Defensive Programming: Added optional chaining to the
onHeaderCellmethod call withinsrc/Header/HeaderRow.tsx. This change prevents potential runtime errors ifonHeaderCellisnullorundefinedon thecolumnobject.
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Code Review
This pull request correctly adds optional chaining for the onHeaderCell call, which prevents a potential runtime error. This is a good improvement. I've added one suggestion to make this even more robust by ensuring additionalProps is always an object.
While reviewing this, I noticed that other properties of the column object (like title, ellipsis, and align on lines 62-64) are accessed without optional chaining. Since the type for column indicates it can be optional, these direct accesses could also lead to runtime errors. It would be beneficial to add optional chaining for these as well to improve the component's robustness.
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #1340 +/- ##
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- Coverage 96.11% 96.10% -0.01%
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Files 57 57
Lines 3448 3440 -8
Branches 628 628
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- Hits 3314 3306 -8
Misses 129 129
Partials 5 5 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Actionable comments posted: 0
🧹 Nitpick comments (2)
src/Header/HeaderRow.tsx (2)
57-57: 类型更严谨：允许 additionalProps 为 undefined可选链调用返回值可能为
undefined；将变量类型改为联合以兼容strictNullChecks/exactOptionalPropertyTypes。- const additionalProps: React.HTMLAttributes<HTMLElement> = column?.onHeaderCell?.(column); + const additionalProps: React.HTMLAttributes<HTMLElement> | undefined = column?.onHeaderCell?.(column);
57-57: （可选）若类型签名允许，传入列索引以增强可用性若
GetComponentProps对第二参数（索引）有支持，可一并传入cellIndex，方便回调内基于列序做定制。请先确认类型声明。- const additionalProps: React.HTMLAttributes<HTMLElement> | undefined = column?.onHeaderCell?.(column); + const additionalProps: React.HTMLAttributes<HTMLElement> | undefined = column?.onHeaderCell?.(column, cellIndex);
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📒 Files selected for processing (1)
src/Header/HeaderRow.tsx(1 hunks)
🧰 Additional context used
🧠 Learnings (1)
📓 Common learnings
Learnt from: bbb169
PR: react-component/table#1202
File: src/Table.tsx:903-904
Timestamp: 2024-11-08T12:53:09.293Z
Learning: 在 `src/Table.tsx` 文件的 React 组件 `Table` 中，即使 `bodyScrollLeft` 频繁更新，也需要在 `TableContextValue` 的 `useMemo` 依赖数组中包含 `bodyScrollLeft` 和 `headerCellRefs`，因为每次滚动时重新计算 `TableContextValue` 是解决该问题所必须的。
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- GitHub Check: test / react component workflow
🔇 Additional comments (2)
src/Header/HeaderRow.tsx (2)
57-57: 修复 onHeaderCell 未定义导致的运行时异常，改动正确可选链调用避免了 onHeaderCell 缺失时的 TypeError，行为向后兼容。
57-57: 无需额外处理：未发现其他未加可选链的 on 回调*
以上目录下并无类似未使用可选链的onHeaderCell、onHeaderRow、onCell或onRow调用。
Summary by CodeRabbit
新功能
Bug 修复
重构