[dart2wasm] Allow dynamic modules to run without re-compiling or running TFA on main module. Accomplishes this by serializing more metadata in the main module metadata: 1) Most of this new metadata is to have access to the main module's dispatch table from the dynamic modules, including ProcedureMetadataAttributes and the DispatchTable itself. 2) Indices to create correct calling names from the dynamic module into the main module (or into the global updateable functions "table"). 3) Basic tree-shaking information about classes (e.g. did TFA fully delete a member or just delete its body). Some metadata from TFA is still expected throughout the compiler. For dynamic modules, we create pessimistic versions of this information and attach it to the new Component. All the same dynamic module tests that were passing (or failing) before are still in the same state. This significantly speeds up compilation of dynamic modules though as only necessary code is compiled and TFA is not run. Change-Id: I109f53cf5dcbe6579c0f78e71ce7779d593455e9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/415500 Reviewed-by: Martin Kustermann <kustermann@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.