fix(textarea): handle undefined placeholder explicitly #2748
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## next #2748 +/- ##
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Coverage 84.07% 84.07%
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Files 217 217
Lines 17830 17830
Branches 2608 2608
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Hits 14991 14991
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🧹 Outside diff range and nitpick comments (1)
src/packages/textarea/textarea.tsx (1)
Line range hint
8-21: 建议完善类型定义考虑到 placeholder 可以是 undefined，建议更新类型定义以更准确地反映这一点。
建议应用以下修改：
export interface TextAreaProps extends BasicComponent { - placeholder: string + placeholder?: string }Also applies to: 23-33
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📒 Files selected for processing (2)
src/packages/textarea/textarea.taro.tsx(1 hunks)src/packages/textarea/textarea.tsx(1 hunks)
🔇 Additional comments (3)
src/packages/textarea/textarea.taro.tsx (1)
127-129: 对 placeholder 的处理逻辑改进合理
此次改动优化了 placeholder 的处理逻辑，明确区分了 undefined 和空字符串的情况，使组件行为更加可预测：
- 当 placeholder 为 undefined 时，使用 locale.placeholder 作为默认值
- 当显式传入空字符串时，保持空字符串不使用默认值
这样的处理方式既保持了向后兼容性，又提供了更细粒度的控制。
运行以下脚本验证 locale 对象的完整性：
✅ Verification successful
placeholder 逻辑验证通过
已确认 locale.placeholder 正确存在并在组件中有效使用，逻辑改进合理。
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# 检查 locale 对象中是否包含必要的 placeholder 属性
ast-grep --pattern 'const locale = {
$$$
placeholder: $_,
$$$
}'
Length of output: 72
Script:
#!/bin/bash
# 搜索所有 locale 对象的定义
rg 'const\s+locale\s*=' src/
# 检查 locale 对象中是否包含 placeholder 属性
rg 'placeholder\s*:' src/
Length of output: 2094
src/packages/textarea/textarea.tsx (2)
Line range hint 1-156: 代码实现完整且合理
此次改动保持了组件的所有现有功能，同时改进了 placeholder 的处理逻辑。代码结构清晰，与其他功能（如字符计数、自动调整大小等）配合得当。
141-143: 优化了 placeholder 的处理逻辑
此更改合理地处理了 placeholder 为 undefined 的情况，使用 locale.placeholder 作为默认值。这样的处理方式既保持了向后兼容性，又提供了更细致的控制。
运行以下脚本验证相关实现：
✅ Verification successful
placeholder 处理逻辑验证通过
所有相关组件均正确使用 locale.placeholder，且 locale.placeholder 已正确定义。没有发现问题。
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# 描述：验证组件中 placeholder 和 locale 的使用情况
# 检查其他组件是否采用类似的 placeholder 处理模式
ast-grep --pattern 'placeholder={$_}'
# 检查 locale.placeholder 的定义
rg -A 2 'placeholder.*=' src/locales/
Length of output: 79
Script:
#!/bin/bash
# 描述：重新验证 placeholder 和 locale 的使用情况
# 查找所有使用 locale.placeholder 的地方
ast-grep --pattern 'locale.placeholder' src/packages/textarea/textarea.tsx
# 检查 locale.placeholder 的定义
rg 'placeholder\s*:\s*string' src/locales/
# 查找 TextArea 组件中所有与 placeholder 相关的逻辑
rg -C 3 'placeholder\s*=' src/packages/textarea/
Length of output: 2034
placeholder精细化处理undefined
Summary by CodeRabbit
TextArea组件的placeholder属性处理逻辑，允许显式传入空字符串而不使用默认值。placeholder为undefined时使用默认的locale.placeholder值。