facebook/react — pull request #2051 by janhancic (2014-08-15 21:37:55+00:00)
Title: Better error message if `onChange` is undefined

Today I spent half an hour wondering why my component didn't work. React kept telling me I don't have a `onChange` handler defined on my controlled input. I did, I just spelled it wrong :)

So I thought this might save somebody some time in the future. Let me know what you think.