What es6 features can I use when I run a file with --harmony flag? Or where can I find any details about it? 
My versions:

Cheers!
What es6 features can I use when I run a file with --harmony flag? Or where can I find any details about it? 
My versions:

Cheers!
 
    
    You can find the list of features enabled with and without --harmony here in another similar question
This is the official list. However, you're recommended not to use --harmony because it enables all the experimental features.
 
    
    