facebook/react — pull request #2317 by zpao (2014-10-10 01:41:17+00:00)
Title: Ship merge, mergeInto, copyProperties to npm

This makes sure `merge`, `mergeInto`, `copyProperties` end up in build/modules which then gets packaged up for npm. Is there anything we're missing?

Ideally we should have deprecation notices. But we've never officially supported these. Also, `merge` now uses `Object.assign` so anybody using these without polyfills will have a Bad Time™.