How to enable Null-Safety in Flutter?

Null safety is no longer an experiment as of Dart 2.12. It is now easy to enable.

Enabling null safety

Starting with the first Dart 2.12 versions, types will be non-nullable by default. So you just need to change your SDK constraint:

  sdk: ">=2.12.0 <3.0.0"

Learn more about “Enabling null safety” on

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