Bug: postal.when callback never gets called when incoming messages do not have a data property

[estaylorco]

Hello,

I've just discovered that publishing messages to a when array of channelDefs will fail to cause the when callback to be called if the messages do not have a data property. I'm having to do this:

postal.publish({ channel: 'c', topic: 't', data: {} });  // <- empty data property

I'm not suggesting that the data property's value must be an empty plain object, only that it must be present. If I remove the data property, the when callback never gets called.

I don't think this is appropriate. It's not always the case that the message payloads are of interest. Meaningfulness might actually simply be that all of the messages were published and received [within the timeout interval], without regard for the payloads.

Please advise.

Thank you!