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【1版P261】Cannot read properties of undefined (reading 'key') #204

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idonteatcookie opened this issue Feb 6, 2023 · 0 comments
Open

【1版P261】Cannot read properties of undefined (reading 'key') #204

idonteatcookie opened this issue Feb 6, 2023 · 0 comments

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@idonteatcookie
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下图红框部分，既然 patch 后的旧节点会被置为undefined，那么下一次遍历到该节点并读取 key 就会报错。

image
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@idonteatcookie