error: js/dist/app.js from UglifyJs Unexpected token: name (Dom7)

What you did
I have installed Swiper as normal dependency in my Project and import it to my scripts file like this import Swiper from 'swiper';
If I try to bundle it to a production ready version with webpack i get this error

Unexpected token: name (Dom7) [./node_modules/dom7/dist/dom7.modular.js:14,0][js/vendor.a8b881e4dc98829fb5c4.js:36577,6]

ERROR in js/vendor.a8b881e4dc98829fb5c4.js from UglifyJs
Unexpected token: name (Dom7) [./node_modules/dom7/dist/dom7.modular.js:14,0][js/vendor.a8b881e4dc98829fb5c4.js:36577,6]
as soon as I downgrade Swiper to version 3.4.2 everything works as expected.

Expected Behavior
Bundling and compression via webpack is working

Actual Behavior
UglifyJS throws an error because of dom7

　降级swiper版本 到3.4.2