Change WordPress.WP.EnqueuedResourceParameters.MissingVersion to warning

[GaryJones]

EnqueuedResourceParameters is included in WordPress-Extra.

It was recently added via #1378.

While I agree that it's a best practice to add a script version (WP will use its own version anyway if not given), I think we should reconsider this being reported as an error.

Example case, would be registering a script from a CDN e.g. https://cdn.bootcss.com/backgrid.js/0.3.8/backgrid.min.js - this already contains the version number, so having to add a version number as a separate argument doesn't make sense.

The arg is optional - if it was something that someone must do (for which not doing would be an error), then it wouldn't be optional.

I realise this is for Extra, not Core, and that there are ways for individual projects to ignore, disable or change the type for this violation, but I'd like to see us re-consider changing it in WPCS.

[XedinUnknown]

I would like to add that adding parameters to the URL may disable resource caching on the CDN, or even break the URL altogether.

[jrfnl]

👍 I think that would be good change.
I've also seen this issue crop up with projects using WebPack which automatically adds a hash which changes when the code changes (or something along those lines, I don't know the fine detail of WebPack), but the effect of that is that the version number isn't needed in those cases either.

[dingo-d]

It was this issue: WPTT/WPThemeReview#170

[jrfnl]

@moorscode As you did most of the work on this sniff, any thoughts ?

[CamelKing]

Any update on this? The boiler plate generated by Underscores failed phpcs, LOL

[jrfnl]

@CamelKing The _s boiler plate fails a WPCS check for a whole lot more than just this as things just aren't getting merged: Automattic/_s#1311

[jrfnl]

Not sure why nobody actioned this before, but PR #2146 should fix it now.