因为.babelrc中限制了 不允许 module.exports 和 export混用

 

{
  "presets": [
    ["env", {
      "modules": false,
      "targets": {
        "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
      }
    }],
    "stage-2"
  ],
  "plugins":["transform-vue-jsx", "transform-runtime"]
}

删除掉  "plugins":["transform-vue-jsx", "transform-runtime"]这一行

The code above is ok. You can mix require and export. You can‘t mix import and module.exports.