Thank you for the PR @dmitry-surkov!

I left you a few comments but we also need to talk about punctuation and operators. Right now, you defined a lot of patterns. The problem with that is that our themes do not recognize these token names, leaving them unhighlighted. On your website, you solved this by modifying your themes but this a lot harder on our side.

Would it be possible to combine these patterns into an operator and a punctuation token like we do in other languages? If more granular highlighting is needed, I suggest doing it like this:

{
    'operator': [
        {
            pattern: /=/,
            alias: 'equals'
        },
        // rest
        /[-+*/]/
    ]
}