add more support for es6 features

[mihaisucan]

Map, WeakMap, Set are missing in vim-javascript, but they are supported by Firefox. Some of these es6 features are also in chrome, currently behind a flag.

see https://developer.mozilla.org/en-US/docs/Web/JavaScript/ECMAScript_6_support_in_Mozilla

[amadeus]

I don't think there's much to 'support' here, other than perhaps adding them to jsGlobalObjects, unless I am misunderstanding you?

[mihaisucan]

Yes, that's correct.

[rambo-panda]

I think it should now consider supporting the

l am sorry . my english is bad;

[arian]

Also highlighting for the from keyword in ES6 module imports would be nice.

import bar from 'foo';

[amadeus]

@arian see #233 I'll merge it in shortly.

[arian]

@amadeus, long time no see! Thanks.

[amadeus]

@arian for sure brother, just note, it will be going into the develop branch initially, so you'll have to have that branch checked out for the bleeding edge

[BerkeleyTrue]

I have noticed issues with indenting when using arrowFunctions. Any plans on supporting new indentations styles?
edit: It is working correctly.

[chiedo]

Could you also add highlighting for string interpolation?

[goatslacker]

This is a bit of an old issue.