>It really doesn't seem to matter which language one writes in that can be transpiled to JavaScript. Pick one you like or just use plain JavaScript. This seems to be one of those cases where you can just pick what you like - a different situation than choosing between Java or C# or Haskell, etc.

Google should redirect the Dart project's resources toward the creation of a legibly-errored, fast, golang to js transpiler.

The open source community has already performed the heavy lifting with the gopherjs project. Google should get on board and support its own language in browser space. A project like gopherjs would take off with the weight of Google behind it: all it needs are increased examples, tutorials, and publicity.