Provide a better error message when a type is accidentally uppercased. (#936)
Provide a better error message when a type is accidentally uppercased. (#936)


cristianoc/reason,cristianoc/reason,facebook/reason,let-def/reason,cristianoc/reason,chenglou/reason,let-def/reason,facebook/reason,chenglou/reason,facebook/reason,let-def/reason,chenglou/reason