Use the standardised MediaWiki storage system for the simple use
case of disabling/enabling Popups. The jStorage library is 12kb
uncompressed and cannot be justified for this usage (and if it becomes
the standardised library mw.storage will begin using it)
This means that browsers with full localStorage or no localStorage
support will not be able to disable Popups. Given the current ecosystem
of the web - localStorage is widely supported - and the fact that grade
A browsers enjoy localStorage support - this is not a problem.
See https://github.com/wikimedia/mediawiki/blob/REL1_27/resources/src/startup.js#L59
Changes:
* Stop using jStorage
* Cleanup and migrate previous values in jStorage with plan for removing this
in a month.
Bug: T136241
Change-Id: I6dac2911e84d6cb20731be34add01576cf407c46
As there are an unmanageable amount of synchronous checks of
mw.popups.enabled, convert mw.popups.experiment.isUserInCondition to a
synchronous method.
Follow on I4959749.
Bug: T132604
Change-Id: Ide07e62868c77bfcd78af58dcec7303a35a72157
Changes:
* Add the ext.popups.experiment module
* Add the mw.popups.experiment.isUserInCondition function, which
returns a promise that resolves with true if the user is in the
experimental condition, otherwise false
* If the experiment isn't configured, i.e. wgPopupsExperimentConfig is
null or undefined, then the user isn't entered into the experiment,
providing a kill switch
Bug: T132604
Change-Id: I49597494273e3862711a32e4951c8598e6c8bf59
