重构双重预防

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2022-08-06 ca151ff4c1cdc4a029f13ac6da7d42e4f8147287

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="JavaScriptSettings">
    <option name="languageLevel" value="ES6" />
  </component>
</project>