Is it though? In a hypothetical JS with the possibility of, say, “decoloring” async functions—e.g. by optionally blocking on their resolved return value—the sit

Is it though? In a hypothetical JS with the possibility of, say, “decoloring” async functions—e.g. by optionally blocking on their resolved return value—the situation that function coloring helps… ceases to exist as a situation in need of helping in the first place. That would be broadly unappealing where single threaded, cooperative concurrency is a baseline assumption! But it’s more fair to say it’s a trade off, and it’s also fair to recognize the things made impossible by a trade off.