[co19] Roll co19 to 8e6263874c8ddd80e1578e7b3ea42fc1faa60937 2026-06-23 sgrekhov22@gmail.com dart-lang/co19#3847. Add more tests for generic getters and setters (dart-lang/co19#3890) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3884. Fix private parameter names in augmenting_constructors_A01_t24.dart (dart-lang/co19#3889) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3891. Fix private named parameters in augmenting_constructors_A01_t25.dart (dart-lang/co19#3901) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3860. Don't augment enum value (dart-lang/co19#3862) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3861. Fix a typo in a part directive URL (dart-lang/co19#3863) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3869. Add missing `extends` clause in augmenting_class_like_declarations_A04_t04.dart (dart-lang/co19#3874) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3877. Add missing parameter in augmenting_constructors_A01_t04.dart (dart-lang/co19#3884) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3878. Remove excessive initializer list in augmenting_constructors_A01_t13.dart (dart-lang/co19#3885) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3880. Initialize representation variables in augmenting_constructors_A01_t17.dart (dart-lang/co19#3887) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3881. Remove erroneous case from augmenting_constructors_A01_t23.dart (dart-lang/co19#3888) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3865. Update expected error position in augmenting_class_like_declarations_A02_t13.dart (dart-lang/co19#3870) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3866. Update expected error position in augmenting_class_like_declarations_A02_t24.dart (dart-lang/co19#3871) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3867. Update expected errors positions in augmenting_class_like_declarations_A03_t03.dart (dart-lang/co19#3872) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3868. Fix typos in augmenting_class_like_declarations_A03_t04.dart (dart-lang/co19#3873) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3876. Fix expectations in augmenting_class_like_declarations_A05_t14_lib.dart (dart-lang/co19#3883) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3879. Fix a typo in augmenting_constructors_A01_t14.dart (dart-lang/co19#3886) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3892. Fix typos in augmenting_constructors_A01_t26.dart (dart-lang/co19#3899) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3893. Fix typos in augmenting_constructors_A01_t28.dart (dart-lang/co19#3900) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3894. Fix private parameters names in augmenting_constructors_A01_t22.dart (dart-lang/co19#3902) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3895. Fix complete augmentations in augmenting_constructors_A02_t03.dart (dart-lang/co19#3903) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3896. Fix typos in augmenting_constructors_A02_t04.dart (dart-lang/co19#3904) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3897. Fix complete constructors in augmenting_constructors_A02_t05.dart (dart-lang/co19#3905) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3898. Fix complete constructors in augmenting_constructors_A03_t01.dart (dart-lang/co19#3906) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3907. Fix augmenting constructors in augmenting_constructors_A01_t15.dart (dart-lang/co19#3909) 2026-06-22 sgrekhov22@gmail.com Fixes dart-lang/co19#3908. Fix typos in augmenting_class_like_declarations_A06_t03.dart (dart-lang/co19#3910) R=athom@google.com, eernst@google.com Cq-Include-Trybots: luci.dart.try:analyzer-linux-release-try,dart2js-minified-linux-d8-try Change-Id: I4c0f2c03f77d7eb8267a0d926a7667ec3cc5b06c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/517700 Reviewed-by: Erik Ernst <eernst@google.com> Auto-Submit: Sergey Grekhov <sgrekhov22@gmail.com> Reviewed-by: Alexander Thomas <athom@google.com>
Dart is:
Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.
Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app. Diagnose app issues using DevTools.
Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:
Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.
Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
Dart is free and open source.
See LICENSE and PATENT_GRANT.
Visit dart.dev to learn more about the language, tools, and to find codelabs.
Browse pub.dev for more packages and libraries contributed by the community and the Dart team.
Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).
If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.
There are more documents in our repo at docs.
The easiest way to contribute to Dart is to file issues.
You can also contribute patches, as described in Contributing.
Future plans for Dart are included in the combined Dart and Flutter roadmap on the Flutter wiki.