[ddc] Introduce a hot reload variant of "ddc" modules These new modules are only used when compiling with the `--canary`, `--modules=ddc` and no other module formats. This new flavor of the module system treats the output .js files as a bundle of one or more Dart libraries. In this change the Dart SDK module is still compiled with it's libraries mixed together but exports them individually. Ideally this is temporary and eventually they can be compiled in isolation as well. All other modules are compiled in isolation so class hierarchies many may be broken until proper cross library linking is implemented in a followup change. Change-Id: I27e58a445476198bd8613bb63c57cb96c0d5bc55 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/379261 Reviewed-by: Nate Biggs <natebiggs@google.com> Commit-Queue: Nicholas Shahan <nshahan@google.com> Reviewed-by: Mark Zhou <markzipan@google.com> Reviewed-by: Sigmund Cherem <sigmund@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.