joyent/node — pull request #5181 by jeffbski (2013-03-31 03:37:57+00:00)
Title: objectMode transform should allow falsey values

objectMode transform should allow falsey values
if a transform (or passthrough) stream has objectMode = true,
it should allow falsey values other than (null or undefined) like
0, false, ''.

null and undefined are reserved to indicate stream eof
but other falsey values should flow through properly.

tests and fix are attached.