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webpack-dev-serverのhot reloadでCPU使用率が上がる問題対応

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概要

タイトル通り
nodeの使用率が100%前後になってMacが高熱になってて辛かった

方法

webapck-dev-serverのconfigに以下を追記する

watchOptions: {
  poll: 1000,
  ignored: ['node_modules']
}

結果

追加前は100%前後だったCPU使用率が20%前後に落ち着いた
Macが熱くて火傷しそうだったので助かった

参考

github issueにあった
https://github.com/webpack/webpack-dev-server/issues/2140

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