I’m trying to use two different versions of Materual-UI because I need to use the DatePicker and TimePicker components which have not yet been migrated to their @next version.
Inside of my package.json I have this:
"material-ui": "^1.0.0-alpha.6",
"material-ui-stable": "git://github.com/CrunchySerial/material-ui.git#master",
after a quick npm install everything looks like it’s loading fine.
The problem comes when I import DatePicker from 'material-ui-stable/src/DatePicker'
My project builds fine - no errors in the terminal console…
But in the browser I get a ton of errors, which I won’t paste the whole list, cause it’s long… but here’s a small screenshot:
Basically, it’s the “everythings broke” error. 
So, when I inspect that line on modules.js this is what it’s screaming about:
export default from './DatePicker';
Which looks absolutely fine to me…
I’ve been pulling my hair out and I can’t figure out for the life of me what the heck is going on here. If anyone has a clue, please let me know cause I don’t even know where to begin on troubleshooting this anymore. I’ve tried all kinds of things - and nothing is working.