Re: Emacs crashes when writting JavaScript

[Dmitry Gutov]

On 23.09.2019 3:50, Jackson Ray Hamilton wrote:
> Some tips if you decide to help: you mentioned an AST, but there isn’t 
> one.  Parsing starts in js-syntax-propertize.  Years ago, Sebastian 
> Wiesner wrote some blog articles explaining how syntax highlighting 
> worked in Emacs, but he’s since removed those posts from his blog and 
> they aren’t available on Internet Archive. Maybe he will provide you 
> with the articles if you ask him for:

Even if he doesn't, though, that's no reason to give up.

For instance, this article seems to give a decent introduction: 
http://www.modernemacs.com/post/major-mode-part-1/

And there's also the manual, existing examples in the code, as well as 
this mailing list (as Emacs Help too) if you still have questions.