assets: Migrate compilation to webpack 5.x
Migrate to the latest major version of webpack
module bundler released a
couple of weeks ago.
Apart a couple of workarounds related to webpack-dev-server
, the migration
mainly consists in updating some configuration, porting swh webpack plugins
to the 5.x API and fixing some new compilation warnings.
Depends on D4474
Migrated from D4472 (view on Phabricator)