https://github.com/whatwg/webidl/pull/1397 and https://github.com/whatwg/webidl/pull/1489 for the grammar change to `async_iterable`. (Filing a separate bug as https://github.com/plinss/widlparser/pull/85 is still a draft with no recent activity)
whatwg/webidl#1397 and whatwg/webidl#1489 for the grammar change to
async_iterable.(Filing a separate bug as #85 is still a draft with no recent activity)