Error with conditional requiring

[bergie]

In NoFlo we support both browser and Node.js, and I'm currently looking to port our build setup to the new builder2 to get rid of issues like componentjs/builder.js#125.

However, it seems the builder's require normalization can't deal with conditional requires, like:

unless exports.isBrowser()
  exports.ComponentLoader = require('./nodejs/ComponentLoader').ComponentLoader
else
  exports.ComponentLoader = require('./ComponentLoader').ComponentLoader

There have been similar issues reported before but apparently closed unresolved #36

I'm trying to wrap this into a Grunt plugin, and looking at scripts.js, resolution errors on local project get thrown. This makes my build fail:

[jonathanong]

gah i guess we can just make it a warning. i hate when people do this stuff and try/catchs.

[lvivier]

+1 to making this a warning, we do lots of models with modella and they all require in different storage plugins and stuff depending on the environment

[timaschew]

fixed in #73