[781] babel-polyfill invalid

2017.5.25

1. npm install -g vue-cli
2. vue init nuxt/starter  project
3. cd project && npm install
4.npm run dev

iE 11 error “Promise”未定义

5.npm install --save  babel-polyfill
6. nuxt.config.js  -> build -> vendor: ['babel-polyfill']
7. npm run dev

ie11 still error “Promise”未定义