Fasta is a compiler framework for compiling Dart sources to Kernel IR. When Fasta works well, you won‘t even know you’re using it, as it will be transparently integrated in tools like dart, dartanalyzer, dart2js, etc.
Hopefully, you'll notice that Fasta-based tools are fast, with good error messages. If not, please let us know.
Fasta sounds like faster, and that's a promise we intend to keep.
runtime_kernel, and dart_precompiled_runtime, so you only need to run this command:./tools/build.py --mode release --arch x64 runtime_kernel dart_precompiled_runtime
Run ./pkg/front_end/tool/fasta outline pkg/compiler/lib/src/dart2js.dart
Optionally, run ./pkg/front_end/tool/fasta dump-ir pkg/kernel/bin/dump.dart pkg/compiler/lib/src/dart2js.dart.dill to view the generated outline.
This will generate a file named pkg/compiler/lib/src/dart2js.dart.dill which contains a serialized representation of the input program excluding method bodies. This is similar to an analyzer summary.
./pkg/front_end/tool/fasta compile pkg/front_end/test/fasta/hello.dart
This will generate pkg/front_end/test/fasta/hello.dart.dill which can be run this way:
./sdk/bin/dart pkg/front_end/test/fasta/hello.dart.dill
./pkg/front_end/tool/fasta analyzer-compile pkg/front_end/test/fasta/hello.dart
This will generate pkg/front_end/test/fasta/hello.dart.dill which can be run this way:
./sdk/bin/dart pkg/front_end/test/fasta/hello.dart.dill
./pkg/front_end/tool/fasta compile pkg/compiler/lib/src/dart2js.dart ./sdk/bin/dart pkg/compiler/lib/src/dart2js.dart.dill pkg/front_end/test/fasta/hello.dart
The output of dart2js will be out.js, and it can be run on any Javascript engine, for example, d8 which is included with the Dart SDK sources:
./third_party/d8/<OS>/d8 out.js
Where <OS> is one of linux, macos, or windows.