Consider disabling Yarn integration

[gaearon]

I've seen quite a few reports like this: https://twitter.com/schep_/status/819642790137200641. We need to figure out if it's Yarn bug causing it or not.

If it is caused Yarn we should disable the integration until it's more stable. This leaves a bad impression on React.

[dschep]

It indeed was the yarn integration. Tho still not as small as you're expecting it to be.

$ rm -rf node_modules && npm install && du -sh node_modules
274M node_modules/

[gaearon]

Will need to investigate, thanks.
Probably some dependencies have updated their dependencies and resulted in duplicate near identical trees.

[gaearon]

The size issue was worked around in 0.9.0 so closing this.
🎊