Paul Berry a062462758 Bump developer experience packages to language version 3.12.
This CL is part of an effort to bump the SDK requirement to `3.12.0-0`
for all the packages in `pkg` that are not published to `pub`, so that
we can get better testing of the "private named parameters" feature.

(Packages that *are* published to `pub` can't be safely bumped yet,
because SDK 3.12 hasn't been released, and I don't want to block those
packages' ability to publish useful updates to customers.)

This change covers the following packages, which are owned by the
developer experience team:
- pkg/analysis_server_client
- pkg/linter
- pkg/server_plugin
- pkg/telemetry

Changes to `pubspec.yaml` files were made manually.

Changes to `.dart` files were made automatically (with a few
exceptions; see below), using `dart fix` to migrate to using private
named parameters where it is possible to do so without changing
semantics. Note that this migration is conservative; see
https://github.com/dart-lang/sdk/issues/58607 for details.

The exceptions are:
- pkg/analysis_server_client/lib/handler/notification_handler.dart
- pkg/analysis_server_client/lib/src/protocol/protocol_common.dart
- pkg/analysis_server_client/lib/src/protocol/protocol_generated.dart

These are code-generated files are checked by the trybots to make sure
they are correct. The code generator runs the formatter, and the
formatter's behavior depends on the current language version. To
minimize the risk of accidental behavioral changes, I addressed this
by manually running these files through `dart format` and then
verifying that the result matches what the code generator would
produce.

Change-Id: I5a0baa28904890a0b7e4234b12f587f66a6a6964
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/487621
Reviewed-by: Samuel Rawlins <srawlins@google.com>
Auto-Submit: Paul Berry <paulberry@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
2026-03-13 10:14:25 -07:00
2026-02-19 13:25:23 -08:00
2026-03-10 13:37:52 -07:00
2026-02-20 05:35:13 -08:00
2026-03-04 18:41:25 -08:00
2025-03-10 03:22:36 -07:00

Dart

An approachable, portable, and productive language for high-quality apps on any platform

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 platforms illustration

License & patents

Dart is free and open source.

See LICENSE and PATENT_GRANT.

Using Dart

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).

Building Dart

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.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.

Roadmap

Future plans for Dart are included in the combined Dart and Flutter roadmap on the Flutter wiki.

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