dart-lang / sdk

# 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). 
## License & patents
Dart is free and open source.
See [LICENSE][license] and [PATENT_GRANT][patent_grant].
## Using Dart
Visit [dart.dev][website] to learn more about the
[language][lang], [tools][tools], and to find
[codelabs][codelabs].
Browse [pub.dev][pubsite] 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).
## Contributing to Dart
See the [contribution guide][contrib] for details.
## 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][building].
There are more documents in our repo at docs.
## Roadmap
Future plans for Dart are included in the combined Dart and Flutter
[roadmap][roadmap] on the Flutter wiki.
[building]: https://github.com/dart-lang/sdk/blob/main/docs/Building.md
[codelabs]: https://dart.dev/codelabs
[contrib]: https://github.com/dart-lang/sdk/blob/main/CONTRIBUTING.md
[issues]: https://github.com/dart-lang/sdk/issues
[lang]: https://dart.dev/guides/language/language-tour
[license]: https://github.com/dart-lang/sdk/blob/main/LICENSE
[patent_grant]: https://github.com/dart-lang/sdk/blob/main/PATENT_GRANT
[pubsite]: https://pub.dev
[repo]: https://github.com/dart-lang/sdk
[roadmap]: https://github.com/flutter/flutter/blob/master/docs/roadmap/Roadmap.md
[tools]: https://dart.dev/tools
[website]: https://dart.dev