Do I still need to install tree-sitter manually, for native tree-sitter in emacs29 to work?

So I took the plunge and upgraded to emacs29. Smooth so far, just having trouble getting tree-sitter to work. I've downloaded and generated the libraries for the various languages from: https://github.com/casouri/tree-sitter-module Then I copied all of them from `dist` to `/usr/local/bin`, and set the treesitter load path, and checked that tree-sitter can see them (require 'treesit) (treesit-available-p) ;; t (setq treesit-extra-load-path '("/usr/local/lib")) ;; open a javascript document to test. (treesit-ready-p 'javascript) ;; t My javascript document only has the JavaScript (major?) mode, but I'm not getting any error messages or anything when I type invalid statements. Is there something I'm missing? Do I also need to install the [tree-sitter](https://emacs-tree-sitter.github.io/getting-started/) package and enable `(global-tree-sitter-mode)`? Where is `tree-sitter-hl-mode ` in the native implementation?

the `tree-sitter` and `tree-sitter-langs` third-party packages are no longer required. third-party shared libraries, describing the grammar of various programming languages, are still required but according to the code you provided it looks like those are already in place. try enabling `tsx-ts-mode` and see what happens. (it should be completely compatible with vanilla JavaScript). at least for me, with emacs 29, I get the expected syntax highlighting and indentation goodies. error messages will come from either an external linter or LSP integration like `eglot` or `lsp-mode`. (treesit can help make these features more accurate but itself does not provide these features). my configuration is here, if you want to have a look: https://github.com/orzechowskid/duomacs/blob/emacs-29/language-modes/duomacs-javascript-typescript.el

you need to enable the major mode too, so run `js-ts-mode`. the built-in treesitter modes replace the standard modes instead of adding a minor mode on top, like the 3rd party tree-sitter package. Since these are not enabled by default, I use the following in my config to map overrides: (push '(css-mode . css-ts-mode) major-mode-remap-alist) (push '(python-mode . python-ts-mode) major-mode-remap-alist) (push '(javascript-mode . js-ts-mode) major-mode-remap-alist) (push '(js-json-mode . json-ts-mode) major-mode-remap-alist) (push '(typescript-mode . typescript-ts-mode) major-mode-remap-alist) (push '(c-mode . c-ts-mode) major-mode-remap-alist) (push '(c++-mode . c++-ts-mode) major-mode-remap-alist)

Ah, this was the solution -- thank you so much!

> error messages will come from either an external linter or LSP integration like eglot or lsp-mode. (treesit can help make these features more accurate but itself does not provide these features). Ah I see, so I still need lsp-mode for error messages. Okay, good to know, thanks!

Eglot would be [built-in emacs 29](https://www.reddit.com/r/emacs/comments/y94nxp/eglot_is_merged_into_emacs_git_master/). lsp-mode may not be needed separately.

THIS is the winning combination I was looking for! Eglot + Tree-sitter are perfect!

TIL about `major-mode-remap-alist` \-- thanks!