Flutter for web is a code-compatible implementation of Flutter that is rendered using standards-based web technologies: HTML, CSS and JavaScript. With Flutter for web, you can compile existing Flutter code written in Dart into a client experience that can be embedded in the browser and deployed to any web server. You can use all the features of Flutter, and you don’t need a browser plug-in.

This means Flutter is now on mobile, web, desktop, and embedded systems. What surprises me is how dedicated to Dart Google seems to be, despite community malaise and the success of TypeScript.