Livewire not initializing in IE11 and Edge

[ruudsnl]

Describe the bug
Hello! Thanks so much for this great package.
It seems Livewire is not initalizing in IE11 and Edge. Tested in IE11 and Edge 42. This seems to be related to the use of spread syntax in object literals (see additional context below).

To Reproduce

• Add @livewireScripts to your view
• Open application in IE11 or Edge
• Check console, the following error appears:
  Expected identifier, string or number

Expected behavior
I expected livewire to initalize

Screenshots

It seems to have to do with this code snippet (according to Edge):
PrefetchMessage.js

Desktop:

• IE11 or Edge 42 on Windows 10 (tested via browserstack)

Additional context
My suspicion is that it has to do with the use of spread syntax in object literals (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax#Spread_in_object_literals), it seems this is not supported by earlier versions of Edge and Internet Explorer 11. We might be able to "transpile" this problem away using Babel?

[ruudsnl]

I'm not a Babel expert, but this might be of help https://babeljs.io/docs/en/babel-plugin-proposal-object-rest-spread

[calebporzio]

Yeah, that's probably right. I'd like Livewire to support those browsers, so I'd love it if someone can try to get this fixed and PR the fix. Thanks!

[ruudsnl]

#586
There you go! @calebporzio :)

[lancepioch]

@ruudschuurmans Thank you for fixing this with your pr!