.catch is only available with jQuery 3, which is only now starting to
roll out (see https://phabricator.wikimedia.org/T124742)
This patch rolls back the usage of .catch introduced in
https://gerrit.wikimedia.org/r/#/c/373327/ to use .fail, but only the
source part, given that patch introduced unit tests for this behavior
Bug: T174724
Change-Id: I6e1c342d812b35846061266bc59e493e87423fd8
We cannot serve .map files from production servers. This makes
Popups extension difficult to debug. As a simplest solution we
decided to store map files as .json files so we can easily access
js maps files.
Changes:
- changed webpack config to store map files under .json extension
Bug: T173491
Change-Id: Iaa55f75a8c5f3e8f1f169b3ac33241cc54f0413f
