☂️ Prepare for Dart 3 #118837

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☂️ Prepare for Dart 3#118837

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P1High-priority issues at the top of the work listHigh-priority issues at the top of the work listc: tech-debtTechnical debt, code quality, testing, etc.Technical debt, code quality, testing, etc.engineflutter/engine related. See also e: labels.flutter/engine related. See also e: labels.frameworkflutter/packages/flutter repository. See also f: labels.flutter/packages/flutter repository. See also f: labels.toolAffects the "flutter" command-line tool. See also t: labels.Affects the "flutter" command-line tool. See also t: labels.

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goderbauer

opened on Jan 19, 2023

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• Since Dart 3 drops support for non-null-safe code: enable unnecessary_null_comparison and clean up code base.
  • flutter/flutter
  • flutter/engine
• Make widgets const that previously couldn't be const because of certain null comparison asserts.
  • Re-evaluation of assertions removal for const widgets #108248
  • Make Flex,Row,Column const for real #119673
• [tool] Remove "Building with sound null safety" output during run and build #115803
• [tool] Remove option to pass unsound null safety flag in flutter build/run commands #118810 ([flutter_tools] Remove --no-sound-null-safety #3 #123297)
• Class Modifiers
  • Identify classes in dart:ui that need the mixin modifier: None.
  • Identify classes in flutter/flutter that need the mixin modifier: flutter.dev/go/mixin-modifier
  • Bump Dart SDK constraints and apply mixin modifier where necessary.
    • Reland: Bump lower Dart SDK constraints to 3.0 engine#40318
    • Bump lower Dart SDK constraints to 3.0 & add class modifiers #122546
  • Use class modifiers instead of Foo._() constructors to prevent extension and instantiation.
    • replace some ._() constructors with class modifiers #122765
    • replace some ._() constructors with class modifiers engine#40328
• patterns/records: enable invalid_case_patterns lint
• [tool] Migrate to --suppress-analytics flag #123066
• Update dartdoc to 6.2.0 #123193
• Update lints for Dart 3.0
  • Post 3.0 lint sync engine#40394
  • Remove 1745 decorative breaks #123259

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P1High-priority issues at the top of the work listHigh-priority issues at the top of the work listc: tech-debtTechnical debt, code quality, testing, etc.Technical debt, code quality, testing, etc.engineflutter/engine related. See also e: labels.flutter/engine related. See also e: labels.frameworkflutter/packages/flutter repository. See also f: labels.flutter/packages/flutter repository. See also f: labels.toolAffects the "flutter" command-line tool. See also t: labels.Affects the "flutter" command-line tool. See also t: labels.

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