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The meta package does not yet have an `internal` constant;
this CL just adds one to the mock packages for testing.

Two checks are implemented:

* Hint if an @internal annotation is found on an element which is
  already part of a package's public API (based on file path).
* Hint if an element annotated with @internal is exported from a
  package's public API.

The notion of "public API" is also implemented for each type of Package:
BasicPackage, BazelPackage, GnPackage, PackageBuildPackage,
and PubPackage.

Bug: #28066
Change-Id: Ifc2709028afcd241f59e802f5952539f717704c3
Commit-Queue: Samuel Rawlins <>
Reviewed-by: Brian Wilkerson <>


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A client-optimized language for fast apps on any platform

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).

Dart platforms illustration

License & patents

Dart is free and open source.


Using Dart

Visit to learn more about the language, tools, getting started, and more.

Browse for more packages and libraries contributed by the community and the Dart team.

Building Dart

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 on our wiki.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.

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