https://stackoverflow.com/questions/52056358/vue-cli-3-project-not-working-on-ie-11
Install babel-polyfill using command "npm install --save babel-polyfill".
"Import babel-polyfill" in your main.js or index.js file at the top of above all imported packages.
原文：https://www.cnblogs.com/newsea/p/9871965.html