Task for all other extensions, as done for Wikimedia-deployed extensions in T223939
Code search: https://codesearch.wmflabs.org/search/?q=onLoadExtensionSchemaUpdates%5C(%20%5C%24&i=nope&files=&repos=
Example patch: https://gerrit.wikimedia.org/r/#/c/511602/
Also
@Ammarpad: Hi, do you plan to mentor this in Google-Code-in-2019, or do you have any mentors in mind? How much work would a student have to perform for one GCI task?
Yes I will mentor that for few tasks like 3-5. I am planning to create a subtask for each extension.
How much work would a student have to perform for one GCI task?
The work is not much, on most extensions it's just changing ( $updater ) to ( DatabaseUpdater $updater )
Change 561325 had a related patch set uploaded (by Ammarpad; owner: Ammarpad):
[mediawiki/extensions/SpamRegex@master] Type hint $updater parameter in onLoadExtensionSchemaUpdates
Change 561325 merged by jenkins-bot:
[mediawiki/extensions/SpamRegex@master] Type hint $updater parameter in onLoadExtensionSchemaUpdates
Change 687749 had a related patch set uploaded (by Sahilgrewalhere; author: Sahilgrewalhere):
[mediawiki/extensions/MathSearch@master] classes: Type hint `$updater` parameter in onLoadExtensionSchemaUpdates
Change 687749 merged by jenkins-bot:
[mediawiki/extensions/MathSearch@master] classes: Type hint `$updater` parameter in onLoadExtensionSchemaUpdates
Change 688244 had a related patch set uploaded (by Sahilgrewalhere; author: Sahilgrewalhere):
[mediawiki/extensions/examples@master] classes: Type hint `$updater` parameter in onLoadExtensionSchemaUpdates
It is not possible to set a type hint when the new hook handler system is used and the interface MediaWiki\Installer\Hook\LoadExtensionSchemaUpdatesHook is implemented, because the interface does not contains the type hint.