What is dart2js?

No. Dart is designed to compile to JavaScript to run across the modern web.

The dart2js tool provides hints for improving your Dart code and removing unused code . Also see dart analyze , which performs a similar analysis but has a different implementation. This page tells you how to use dart2js on the command line. It also give tips on debugging the JavaScript that dart2js generates.

The Dart development compiler (dartdevc, also known as DDC) lets you run and debug your Dart web app in the Chrome browser.