Apply Caveats - I did a cursory search but I don't see the issue.

[MyAutoBrainG]

So why doesn't this formula apply the caveats?

I'm not used to a homebrew formula not doing the full install... Just asking, half to learn and half to see if there's a need.

[ljharb]

Homebrew is not supported whatsoever - please don't install nvm via homebrew. I have no idea why the author of the formula did it improperly, but the curl command in the readme is the only officially supported mechanism for installing nvm.

There's a request at #469 for an official formula, but my feelings for brew range from strong dislike to hate, so that's pretty unlikely. Once #400 is implemented, random homebrew formulas could surely use nvm update to update themselves properly, which could theoretically avoid the caveats you're mentioning.

The best approach is to not use brew for nvm altogether.

[MyAutoBrainG]

That's good to know! I was just following the instructions from react-native, you might want to shoot a quick message to them: http://facebook.github.io/react-native/docs/getting-started.html#requirements