How do I enable Dart support in Flutter?

The production compiler (dart2js) supports the last two major releases of the following browsers:

Dart is a client-optimized language for developing fast apps on any platform. … Dart provides the language and runtimes that power Flutter apps , but Dart also supports many core developer tasks like formatting, analyzing, and testing code.

To enable null safety, you must go to your pubspec. yaml file and then navigates to the environment tag . You’ll see that under the tag, there is an SDK tag version. Null Safety complies with the SDK version 2.12 and up.