Error: Plugin/Preset files are not allowed to export objects, only functions.

当出现这个报错的时候时

Error: Plugin/Preset files are not allowed to export objects, only functions. In E:\AAA\前端\07-vue\0-05脚手架\02_src_分析脚手架\testdemo\node_modules\babel-preset-es2015\lib\index.js

 解决方法：

在babel.config.js中

把   es2015 改为   @babel/preset-env

module.exports = {
  "presets": [
    '@vue/cli-plugin-babel/preset',
    ["@babel/preset-env", { "modules": false }],
  ],
}

就解决了