language: dart

dart:
  - dev

dart_task:
  - dart_analyzer: --enable-experiment=non-nullable --fatal-warnings --fatal-infos .

matrix:
  include:
  # Only validate formatting using the dev release
  - dart: dev
    dart_task: dartfmt

# Only building master means that we don't run two builds for each pull request.
branches:
  only: [master, null_safety]

cache:
 directories:
   - $HOME/.pub-cache