Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.

Failed to load module script: The server responded with a non-JavaScript MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.

这个问题主要是es6没有转成es5，安装 npm install --save-dev babel-loader@7 babel-core babel-preset-es2015后重新打包就可以了