Bump pub to c4e9ddc888c3aa89ef4462f0c4298929191e32b9

Changes:
```
> git log --format="%C(auto) %h %s" 51435ef..c4e9ddc
 https://dart.googlesource.com/pub.git/+/c4e9ddc8 Extend retries for file-ops on windows (#3451)
 https://dart.googlesource.com/pub.git/+/6aeb1795 Upgrade package:lints to 2.0.0 (#3445)
 https://dart.googlesource.com/pub.git/+/73ea9a98 Roll tar to 0.5.5+1 (#3447)
 https://dart.googlesource.com/pub.git/+/2dc887fe Add env var for writing golden files (#3222)
 https://dart.googlesource.com/pub.git/+/764500b8 List all files in pub publish (#3440)
 https://dart.googlesource.com/pub.git/+/0b52e6a8 Remove debug print (#3441)
 https://dart.googlesource.com/pub.git/+/ea070238 Merge pull request #3443 from jonasfj/master
 https://dart.googlesource.com/pub.git/+/bffd1267 Merge branch 'cherry-pick-for-2.17.2'
 https://dart.googlesource.com/pub.git/+/c66381c5 Make `name` field of `_UserInfo` nullable. Fix #3424 (#3442)
 https://dart.googlesource.com/pub.git/+/cecc8e3c Handle broken response from userinfo_endpoint (#3427)
 https://dart.googlesource.com/pub.git/+/6c635040 Make `name` field of `_UserInfo` nullable. Fix #3424 (#3442)
 https://dart.googlesource.com/pub.git/+/6f20a94b Handle missing pubspec.lock in dependency_services list (#3439)
 https://dart.googlesource.com/pub.git/+/0ad17e84 Handle broken response from userinfo_endpoint (#3427)
 https://dart.googlesource.com/pub.git/+/153ef061 `pub add` create top-level attribute in block-style if possible. (#3423)
 https://dart.googlesource.com/pub.git/+/3b96f910 Handle error code 183 on windows (#3426)
 https://dart.googlesource.com/pub.git/+/9eb6428c Ignore `pubspec_overrides.yaml` for `publish` command (#3419)

```

Diff: https://dart.googlesource.com/pub.git/+/51435efcd574b7bc18d47a5dd620cb9759dea8f8~..c4e9ddc888c3aa89ef4462f0c4298929191e32b9/
Change-Id: I6dacb3e95c6399d3fb5cf340b5d0e5cded270684
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/247962
Commit-Queue: Sigurd Meldgaard <sigurdm@google.com>
Reviewed-by: Jonas Jensen <jonasfj@google.com>
2 files changed
tree: 38de737be9f89f50dae2e7c83a319b54153439cc
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. samples-dev/
  10. samples_2/
  11. sdk/
  12. tests/
  13. third_party/
  14. tools/
  15. utils/
  16. .clang-format
  17. .gitattributes
  18. .gitconfig
  19. .gitignore
  20. .gn
  21. .mailmap
  22. .style.yapf
  23. .vpython
  24. AUTHORS
  25. BUILD.gn
  26. CHANGELOG.md
  27. codereview.settings
  28. CONTRIBUTING.md
  29. DEPS
  30. LICENSE
  31. OWNERS
  32. PATENT_GRANT
  33. PRESUBMIT.py
  34. README.dart-sdk
  35. README.md
  36. sdk_args.gni
  37. SECURITY.md
  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 dart.dev to learn more about the language, tools, and to find codelabs.

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

Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).

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.