[Nekorosu]

The article clearly shows that Dart doesn't stand too far from vanilla JS. Conceptually it's on the same level. Futures? Really? Functional reactive programming or communicating sequential processes solve the async problem a lot better than futures. FRP is available in vanilla JS (take a look at bacon.js) and CSP are part of ClojureScript which by the way exists because it's a good tool not because some megacorp throws it's money to push it to the masses.