修改entry配置报错filter of undefined

Question

在学react hooks 构建火车票PWA这门课，看到7-3这节按老师的修改执行build之后报 Cannot read property 'filter' of undefined 的错误，查了半天不知道怎么解决，有没有学过的同学解答下。

Answer 1

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

Answer 2

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Answer 3

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Answer 4

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Answer 5

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Answer 6

同问！！！

Answer 7

react-scripts版本问题，重新创建项目  npm i --save react-scripts@1.*