NPM browser field not picked up on packager server running on Windows

[rozele]

The packager server uses browser versions of an NPM package when available (e.g., for uuid). On Windows, this replacement behavior is not working correctly. Here's a simple repro:

var uuid = require('uuid');

Do this in anywhere in your react-native app and it will fail to pick up the browser version of that package.

This is on Windows 10, react-native@0.31.0, node@6.2.1. Will confirm if still exists in 0.32.0-rc.0.