add es6 module build

[modosc]

based on reduxjs/redux#1369

also i still think there should be a minor or major version bump for this (and the old versions deprecated) - we still have to setup special rules in babel to make it work which is bad for a patch release.

[yocontra]

Seems like this PR might be overkill, what's wrong with pointing "main" at dist/react-responsive.js and adding a "files": [ "dist" ] attribute?

[modosc]

sorry, i'm not following - that's already the case: https://github.com/contra/react-responsive/blob/master/package.json#L12

[yocontra]

Something must be weird with your webpack config because this works fine for me. Your original error was from a file in src but the module points to dist and nothing in dist points back to src.

Maybe your webpack config is picking up the jsnext:main declaration in the package.json?

[yocontra]

I just removed that declaration and switched it to only publish dist, so run npm update and let me know if the issue still happens

[modosc]

yeah you're totally right - we're separately importing a single file from the distribution in and that's what's causing the error. i'll deal with this separately.

i still think that this pr does the right thing for jsnext:main builds but i don't have a vested interest in it, let me pull down your newest version and see if webpack does the right thing now

[modosc]

you're right - we were also pulling in a single file and that's where that error came from.

i updated to the most recent release and webpack is happy - i think this solution is the correct one for publishing the es6 module version but i'm not invested in it since we've got a workaround so feel free to close out.