"Today, I think that the best investment for any Web developer is to start learning Dart. Why?
As a developer and a retired university professor, for the first time in my long career, I can do the following with Dart:
I can use Dart both on the client and on the server.
With Dart, I can apply both object-oriented and functional way of programming.
I can start developing a prototype without data types and introduce them when I need to convert the prototype to a deployable application.
I can use Dart for both synchronous and asynchronous programming.
I can use many publicly available packages and reuse their libraries.
I can be a web engineer on the client-side and a software engineer on the server-side, with the same language and many reusable libraries."https://www.dartlang.org/