Re: TypeScript support for tree-sitter (was Re: Call for volunteers: add tree-sitter support to major modes)

[Po Lu]

Yuan Fu <casouri@gmail.com> writes:

> +(add-to-list 'auto-mode-alist '("\\.ts\\'" . typescript-mode))
> +
> +;;;###autoload
> +(add-to-list 'auto-mode-alist '("\\.tsx\\'" . typescript-mode))
> +
> +(define-derived-mode typescript-mode prog-mode "TypeScript"
> +  "Major mode for editing typescript."
> +  :group 'typescript
> +  :syntax-table typescript-mode--syntax-table
> +
> +  (unless (or (treesit-can-enable-p)
> +              (treesit-language-available-p 'tsx))
> +    (error "Tree sitter for TypeScript isn't available."))

So editing TypeScript source code will cause an error to be signalled
when tree-sitter is not available?