(TC39 and Mozilla member here.)<p>FWIW, this:<p><pre><code>    For these reasons, the V8 team, along with TC39 committee members from Mozilla and Microsoft, strongly support denoting proper tail calls by special syntax.
</code></pre>
is misrepresentative of the state of consensus and frankly premature. In particular, while I won&#x27;t try to speak for all of my colleagues (we do not pre-determine an official Mozilla position in advance of standards discussion) I don&#x27;t <i>think</i> it&#x27;s the case that any of the Mozilla representatives &quot;strongly support&quot; syntactic tail calls, and I personally have reservations. It hasn&#x27;t gotten beyond being an area of open exploration.<p>All that said, I&#x27;m interested to see where the explorations go, and I&#x27;m looking forward to subsequent discussions.