[dart2js] better help message. Makes more prominent that you can use '-v' to show extra details about all options. The message after this change will look as follows: ``` Compile Dart to JavaScript. Usage: dart compile js [arguments] <dart entry point> (use -h -v for detailed information about all options) -h, --help Print this usage information -o, --output Write the output to <file name>. -O<0,1,2,3,4> Set the compiler optimization level (defaults to -O1). ``` Fixes https://github.com/dart-lang/sdk/issues/51982 Change-Id: I76fe5478b4a1d4b2ae2170eca72d764bc4d120b4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/294164 Reviewed-by: Nate Biggs <natebiggs@google.com> Reviewed-by: Devon Carew <devoncarew@google.com> Commit-Queue: Sigmund Cherem <sigmund@google.com>
Dart is:
Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.
Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.
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).
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See LICENSE and PATENT_GRANT.
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Browse pub.dev for more packages and libraries contributed by the community and the Dart team.
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You can also contribute patches, as described in Contributing.