Modern JavaScript has fine stream abstractions in WHATWG Stream and async iterables, and Dart has the same unhandled Future issue as JS. Dart generally has few

Modern JavaScript has fine stream abstractions in WHATWG Stream and async iterables, and Dart has the same unhandled Future issue as JS. Dart generally has fewer, but nicer, libraries for dealing with collections of Futures, but JS has a lot of npm libraries and is somewhat catching up with additions like Promise.{any,allSettled,race} and Array.fromAsync().