RTCDataChannel.send(null)

[lgrahl]

I'm unsure what's supposed to happen when calling dataChannel.send(null). Step 3 of the send method states:

Execute the sub step that corresponds to the type of the methods argument:
...

But what if none of the types match? Raise TypeError?

[alvestrand]

TypeError seems right to me for arguments that have no substep defined.
For the particular case of null, returning without action might be equally appropriate.

[lgrahl]

Then, I would come back and ask the same question for undefined. :)
But TypeError sounds good to me. Should we explicitly mention that in the spec as a catch all step?

[adam-be]

I think this is already covered by WebIDL since none of the send method overloads have a nullable argument. The result will be TypeError.

[lgrahl]

Yes but since all implementations currently get it wrong, I think it's worth spending an extra step to provide clarity.

[adam-be]

Would a note be sufficient?

[aboba]

@lgrahl Can you submit a PR?