hook/link.dart support in flutter_tools #146263
Description
In #129757, we've added hook/build.dart which runs before kernel compilation.
The link hook (hook/link.dart) will run after kernel compilation and enable tree-shaking assets:
- Completely removing an asset if it's not used.
- Shrinking the contents of an asset if only a subset of it is used.
This issue tracks the flutter_tools implementation of invoking link hooks.
- MacOS
- iOS (including add2app)
- Linux
- Android (including add2app)
- Windows
Only in AOT compilation (flutter release) will tree-shaking be available.
However, link hooks should also be invoked on all JIT paths (including hot-restart).
The relevant code can be found in the PRs mentioning #129757 (note that many files moved in #143055).
Tracking issue for the link hook for both Dart and Flutter combined:
Umbrella issue for native assets:
cc @mosuem you don't seem to be part of the flutter org yet on GitHub, so I can't assign you to this issue.