IE syntax Error when import '@livechat/ui-kit'

[indraakkk]

I'm using webpack-react-babel boilerplate successfully compiling the bundle and running on any browser as chatwidget, except on IE 10

import { ThemeProvider, FixedWrapper, darkTheme, elegantTheme, purpleTheme, defaultTheme } from '@livechat/ui-kit'

after removing above line, IE continue print connected status from my socket.io, when using it, IE just show blank.