| [](https://github.com/dart-lang/native/actions/workflows/native.yaml) |
| [](https://coveralls.io/github/dart-lang/native?branch=main) |
| [](https://pub.dev/packages/native_assets_cli) |
| [](https://pub.dev/packages/native_assets_cli/publisher) |
| |
| This library contains the CLI specification and a default implementation |
| for bundling native code with Dart packages. |
| |
| ## Status: Experimental |
| |
| **NOTE**: This package is currently experimental and published under the |
| [labs.dart.dev](https://dart.dev/dart-team-packages) pub publisher in order to |
| solicit feedback. |
| |
| For packages in the labs.dart.dev publisher we generally plan to either graduate |
| the package into a supported publisher (dart.dev, tools.dart.dev) after a period |
| of feedback and iteration, or discontinue the package. These packages have a |
| much higher expected rate of API and breaking changes. |
| |
| Your feedback is valuable and will help us evolve this package. |
| For bugs, please file an issue in the |
| [bug tracker](https://github.com/dart-lang/native/issues). |
| For general feedback and suggestions for the native assets feature in Dart and |
| Flutter, please comment in [dart-lang#50565] or [flutter#129757]. |
| |
| ## Example |
| |
| A typical layout of a package with native code is: |
| |
| * `lib/` contains Dart code which uses [`dart:ffi`] and [`package:ffigen`] |
| to call into native code. |
| * `src/` contains C/C++/Rust code which is invoked through `dart:ffi`. |
| * `hook/build.dart` implements the CLI that communicates which native assets |
| to build/bundle with the Dart/Flutter SDK. This file uses the |
| protocol specified in this package. |
| |
| Example can be found in [example/build/](example/build/). |
| |
| ## Usage |
| |
| Using the native assets feature requires passing |
| `--enable-experiment=native-assets` in Dart on a dev build. |
| |
| The native assets feature is not yet available in Flutter. |
| |
| ## Development |
| |
| The development of the feature can be tracked in [dart-lang#50565], |
| [flutter#129757], and in the issue tracker on this repository. |
| |
| [`dart:ffi`]: https://api.dart.dev/stable/dart-ffi/dart-ffi-library.html |
| [`package:ffigen`]: https://pub.dev/packages/ffigen |
| [dart-lang#50565]: https://github.com/dart-lang/sdk/issues/50565 |
| [flutter#129757]: https://github.com/flutter/flutter/issues/129757 |