fix es6 import

[sylvaindumont]

export as explained in: https://github.com/addyosmani/es6-equivalents-in-es5#modules
closes #24
@neonerd can you verify if doesn't break anything for you ?

[openscript]

Thank you!

I've tested it in my project and it works!

[neonerd]

@sylvaindumont Thanks for pinging :)

Yes, this works fine for me too, didn't break anything.

[simov]

Thanks everyone! 👍 The fix is published in v1.2.8! ✨