Kate Lovett a04fb324be
Bump Dart to 3.8 and reformat (#171703)
Bumps the Dart version to 3.8 across the repo (excluding
engine/src/flutter/third_party) and applies formatting updates from Dart
3.8.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [ ] I listed at least one issue that this PR fixes in the description
above.
- [ ] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
2025-07-07 17:58:32 +00:00
..
2025-05-05 17:56:26 +00:00

flutter/third_party

This directory contains third-party code that is a combination of:

  • Code that is vendored into the Flutter repository, from an external source. For example, we might have third_party/glfw, which contains the GLFW library, vendored from an external repository.

    💡 TIP: See DEPS for where these sources are declared.

  • Code that originates from another repository, but is copied (sometimes with alterations) into the Flutter repository. For an example, see third_party/spring_animation.

  • Code that is licensed separately from the rest of the Flutter repository. For example, see third_party/txt.

When adding a new externally sourced third-party library, update .gitignore:

# Ignores all third_party/ directories except for the ones we want to track.

+ !{folder_name}/