fix null coalescent operator expression

[mjauvin]

• add parenthesis around expression, was breaking when compiling the js asset without this
• recompile all js assets

[bennothommo]

Looks fine to me, if it's all tested and works, then feel free to merge.

@mjauvin you're right, null coalesce is definitely a valid operator, so the problem is with the asset compiler. I don't think the same problem would occur with the new Mix compiler.

[LukeTowers]

This might be worth reporting to wikimedia (I believe the JS minifier is now using https://github.com/wikimedia/minify).

[LukeTowers]

@mjauvin are you able to report the issue to wikimedia?

[mjauvin]

@LukeTowers I tried to open an issue, but couldn't find a way without creating a developper account.

Do you have such an account yourself?

[LukeTowers]

No, you'd have to create one.

[mjauvin]

Man, forget it. Ever heard of "La maison des fous" ? You get bounced all over the place and never end-up in the right place... this is MADENING.

Why can't they have github issue enabled and that's it?

[mjauvin]

Issue opened at wikimedia:
https://phabricator.wikimedia.org/T305277