Files
sdk/pkg
Martin Kustermann bed7af4d7f [dart2wasm] Reduce large strides of repeated elements in dynamic dispatch table
This removes 1% uncompressed size from e main module and
may make startup a bit faster.

The element segment of the dynamic dispatch table may have large
strides of identical functions. This happens e.g. when a base
class defines a method and large number of subclasses inherit tha
method.

This CL applies a similar optimization to the dynamic dispatch
table building code as we did in [0] for the normal dispatch
table.

Due to [1] which updated checked-in SDK, new formatter is used
for presubmit checks. Patchset 1-2 is formatting the files, the
actual changes is from Patchset 3+ onwards.

[0] https://dart-review.googlesource.com/c/sdk/+/467843
[1] https://dart-review.googlesource.com/c/sdk/+/484224

Issue https://github.com/dart-lang/sdk/issues/62639

Change-Id: Ia5d63ab31a4167e3ea4c5903ed5db764b6ad3327
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/488720
Reviewed-by: Srujan Gaddam <srujzs@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
2026-03-18 10:29:50 -07:00
..
2026-03-18 10:22:29 -07:00
2026-03-17 05:36:21 -07:00
2026-03-17 01:46:44 -07:00
2026-03-12 09:11:42 -07:00

Package validation

The packages in pkg/ are automatically validated on the LUCI CI bots. The validation is largely done by the tools/package_deps package; it can be tested locally via:

dart tools/package_deps/bin/package_deps.dart

Packages which are published

There are several packages developed in pkg/ which are published to pub. Validation of these packages is particularly important because the pub tools are not used for these packages during development; we get our dependency versions from the DEPS file. It's very easy for the dependencies specified in a package's pubspec file to get out of date wrt the packages and versions actually used.

In order to better ensure we're publishing correct packages, we validate some properties of the pubspec files on our CI system. These validations include:

  • that the dependencies listed in the pubspec are used in the package
  • that all the packages used by the source are listed in the pubspec
  • that we don't use relative path deps to pkg/ or third_party/ packages

Packages which are not published

For packages in pkg/ which we do not intend to be published, we put the following comment in the pubspec.yaml file:

# This package is not intended for consumption on pub.dev. DO NOT publish.
publish_to: none

These pubspecs are still validated by the package validation tool. The contents are more informational as the pubspecs for these packages are not consumed by the pub tool or ecosystem.

We validate:

  • that the dependencies listed in the pubspec are used in the package
  • that all the packages used by the source are listed in the pubspec
  • that a reference to a pkg/ package is done via a relative path dependency

Adding new packages

Run gclient sync to re-generate .dart_tool/package_config.json after adding a new package.

Testing packages

Currently dart test can't be used to run the tests, use test.py as usual. E.g. the command ./tools/test.py -n...<path> runs all tests with prefix <path>.