您的 webpack 配置格式不正确.所以你的 devServer 返回的是后备 html 文件而不是包.

Your webpack config is malformed. So your devServer is returning the fallback html file instead of the bundle.

因此为什么脚本使用 ('text/html') MIME 类型.

Hence why the script is served with the ('text/html') MIME type.

devServer: {
    historyApiFallback:{
      index:'/dist/index.html'
    },
  }

你的意思可能是这样的:

You probably meant something like this:

devServer: {
  historyApiFallback: true
}

https://webpack.js.org/configuration/dev-server/