Easy Dart JS interop without dart:js
This is impressive. You can compile and run code online including C++, Python, .Net, etc.
Runnable CodeSnippets - Discover Everything through Code
Creating a StatefulWidget https://gist.github.com/branflake2267/60f24f6532a3ea54d4680c9967519201
TypeScript vs. Dart: Class Constructors (Part 1)
Dart is an open-source, scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps. Dartlang.org