Vue-component syntax error in IE

[SnooHD]

In IE11 i get the following syntax error:
SCRIPT1002: Syntax error akryum_vue-component-dev-client.js (8214,1)
The code that is on this location:
class WebSocket extends EventEmitter
Is this an issue with babel? I am using meteor 1.6.1 with @babel/runtime installed.

[wildhart]

Same here, on the same class WetbSocket... line. With Meteor 1.8.0.2 and @babel/runtime 7.1.2.

I don't get it when compiling with the --production flag though, only development.

[GeoffreyBooth]

vue-component-dev-client needs to be built with transpilation. This is the error in IE11:

from here:

IE11 doesn’t support the class keyword, so including WebSocket.js without transpilation will cause this error in IE11. The solution would be to have vue-component-dev-client be fully transpiled by Babel.

It would be nice to get this fixed, as it would be much easier to debug IE11 issues if vue-component could run in IE11 in development mode.