Konstantin Shcheglov 70c0e60aff Elements. Use withTypeParameters() in BundleWriter.
Use merged type parameters in BundleWriter

Use `withTypeParameters()` when writing type-parameterized fragments
instead of rebuilding a local scope from `fragment.typeParameters`.

The serialized data still comes from the fragment list, but the
resolution context now uses `fragment.element.typeParameters`. This
makes BundleWriter use the canonical merged type parameter elements when
writing bounds, default types, and other references that can point back
to those parameters.

Using the merged elements keeps the writer aligned with how later
resolution data refers to type parameters, especially when multiple
fragments are linked into a single element.

Also rename `_writeTypeParameterElement` to
`_writeTypeParameterFragment` to match what the method actually writes:
fragment declaration data, with element-backed resolution properties.

Change-Id: Iddcd7a4b15ad0717bd137da97813f761e0fba5eb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/494569
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Paul Berry <paulberry@google.com>
2026-04-13 14:46:00 -07:00
2026-02-19 13:25:23 -08:00
2026-02-20 05:35:13 -08:00
2026-03-19 01:25:57 -07:00
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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