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Data assets #171379

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@mosuem mosuem commented Jun 30, 2025

Refiling of #169273, which itself is a rebase of #159675

This PR adds bundling support for the experimental dart data asset feature: Dart packages with hooks can now emit data assets which the flutter tool will bundle.

It relies on flutter's existing asset bundling mechanism (e.g. entries in AssetManifest.json, DevFS syncing in reload/restart, ...).

The support is added under an experimental flag (similar to the existing native assets experimental flag).

Also, kNativeAssets is removed to also bundle data assets on flutter build bundle.

The chrome sandbox is disabled as per #165664.

  • I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
  • I read the [Tree Hygiene] wiki page, which explains my responsibilities.
  • I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement].
  • 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 ///).
  • I added new tests to check the change I am making, or this PR is [test-exempt].
  • I followed the [breaking change policy] and added [Data Driven Fixes] where supported.
  • All existing and new tests are passing.

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

[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

@github-actions github-actions bot added tool Affects the "flutter" command-line tool. See also t: labels. a: desktop Running on desktop team-android Owned by Android platform team team-ios Owned by iOS platform team labels Jun 30, 2025
@mosuem mosuem force-pushed the refileDataAssets branch 2 times, most recently from 039d56f to a306d32 Compare June 30, 2025 15:36
Refiling of #169273, which itself is a rebase of #159675

This PR adds bundling support for the experimental dart data asset
feature: Dart packages with hooks can now emit data assets which the
flutter tool will bundle.

It relies on flutter's existing asset bundling mechanism (e.g. entries
in AssetManifest.json, DevFS syncing in reload/restart, ...).

The support is added under an experimental flag (similar to the existing
native assets experimental flag).

Also, kNativeAssets is removed to also bundle data assets on flutter
build bundle.

The chrome sandbox is disabled as per #165664.

- [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].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] 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
@mosuem mosuem force-pushed the refileDataAssets branch from a306d32 to 69f3561 Compare July 2, 2025 11:21
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