描述：bable-es2015以及babel本身组件在新版本要求的外部配置文件.
1 {
2 "presets": [
3 ["env", {
4 "modules": false,
5 "targets": {
6 "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
7 }
8 }],
9 "stage-2"
10 ],
11 "plugins": ["transform-vue-jsx", "transform-runtime"]
12 }
具体请查看官网文档：https://babeljs.io/docs/en/options
原文：https://www.cnblogs.com/cisum/p/9612742.html