bug#58844: 29.0.50; Font lock features for js/ts-mode

[Yuan Fu]

> On Oct 28, 2022, at 12:27 PM, Theodor Thornhill <theo@thornhill.no> wrote:
> 
> Hi Yuan!
> 
> I've added more font lock features to the js and ts modes.  I think they
> can serve as a suitable starting point for the features, and serve as
> inspiration to other modes, until we settle on a standard here.
> 
> Thanks,
> 
> Theo
> 
> <0001-Add-in-new-font-lock-features-in-js-ts-mode.patch>

Thanks! Minor bikeshed: I think singular is slightly better. Ie, comment 
instead of comments. No need to modify your patch, if you agree I can change 
them myself. Also treesit-font-lock-feature-list should contain three sublist, 
each representing a decoration level, that’s how we get two types of 
customization in the same time. I can fix that too.

While we’re at it, are there specific reasons why you write many indent rules 
in two lines, like this:

((parent-is "ternary_expression")
      parent-bol ,ts-mode-indent-offset)

?

I think they should be in one line for clarity and space efficiency.

Yuan