A look at Dart's null safety syntax

[jasonfi]

I've done some work with Dart recently, and I thought that Nim could perhaps 
benefit from a look at their approach to null safety:

You can read about it here: <https://dart.dev/null-safety>

The syntax is so much better, in my opinion, as it is more minimal. For example 
in Nim you'd write:
    
    
      var abc: Option[string]
      
      if abc == none(string):
        abc = some("test")
    
    
    Run

The same code in Dart:
    
    
      String? abc;
      
      if (abc == null) {
        abc = "test"
      }
    
    
    Run

Going back to Nim I see my code is full of "some" and "none" keywords, where as 
Dart tries to minimize this syntax.

Is this something Nim could learn from? Nim 2.0 perhaps?