Jens Johansen
49e0a9b19e
Looking at only the amount of data used by interface types after loading a dill completely (lazy loading disabled or everything read): Loading the sdk: Saving ~3.3 MB. Loading a compile of a simple flutter app: Saving: ~11.6 MB. Loading a compile of dart2js: Saving: ~18.2 MB. Testing on a big internal app I see savings of 200+MB. In my tests it reduces the amount of interface types by a factor of between 7 and 12. Looking at the VMs reported memory, peak memory and heap usage, without lazy loading for the big internal app we're talking ~200 MB savings, with lazy loading (without loading anything) we're generally talking a ~10MB saving (process current an peak memory, but where the heaps total capacity was ~4 MB bigger). https://github.com/dart-lang/sdk/issues/50161 Change-Id: Ic6601e907fb3127694f54e0865fe7c5a7057d9f5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/266383 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Jens Johansen <jensj@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
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. Its 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pubspec file to get out of date wrt the packages and versions actually used.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 DO NOT publish.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