Revert "This is a trial submit of the unfork CL, it will be reverted immediately."

This reverts commit 393468dc8920820a326f70d7cc387f5b4aae7a13.

Reason for revert: This was a trial submit and so reverting it.

Original change's description:
> This is a trial submit of the unfork CL, it will be reverted immediately.
> This commit is being done so we can roll it into Flutter and run some device lab testing to see the effect this CL will have on Flutter.
> 
> [BUILD] - Initial CL to unfork the NNBD Dart SDK
> 
> - Flips the flag from --nnbd to --no-nnbd so that by default it builds
>   the NNBD version
> - using the --no-nnbd flag results in the SDK being built in a
>   directory which has the 'Legacy' suffix added to it
>   (e.g: out/DebugX64Legacy)
> - the '--enable-experiment=non-nullable' flag still needs to be passed
>   in during execution so that CFE runs in that mode. This is different
>   from the 'null_safety' flag
> 
> Change-Id: I83c813aee2a5b61ad876d8a7b0988705bb24c839
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144082
> Reviewed-by: Siva Annamalai <asiva@google.com>

TBR=asiva@google.com,liama@google.com

Change-Id: I7b50fae71764eceb17893338d1981e40ea2de520
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144083
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
31 files changed
tree: 3b9b3b90fa2ddd1f18f95f52c0243ffb45adad5d
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. client/
  6. docs/
  7. pkg/
  8. runtime/
  9. samples/
  10. samples-dev/
  11. sdk/
  12. sdk_nnbd/
  13. tests/
  14. third_party/
  15. tools/
  16. utils/
  17. .clang-format
  18. .gitattributes
  19. .gitconfig
  20. .gitignore
  21. .gn
  22. .mailmap
  23. .packages
  24. .style.yapf
  25. .vpython
  26. AUTHORS
  27. BUILD.gn
  28. CHANGELOG.md
  29. codereview.settings
  30. CONTRIBUTING.md
  31. DEPS
  32. LICENSE
  33. PATENT_GRANT
  34. PRESUBMIT.py
  35. README.dart-sdk
  36. README.md
  37. sdk_args.gni
  38. WATCHLISTS
README.md

Dart

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.

See LICENSE and PATENT_GRANT.

Using Dart

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

Browse pub.dev 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.