tree-sitter-module

ipt-ts-mode" which should not give you any error but instead nice syntax highlighting. You might find there is a treesitter plugin for your language available and it is even supported by "tree-sitter-module" but there is still no major mode, yet. Happened to me for Perl 5.

think my C++ slowness issue is due to fontlock https://www.gnu.org/software/emacs/manual/html_node/emacs/Fo... Even without a startup file, I can't open https://github.com/ASDAlexander77/TypeScriptCompiler/blob/ma... and scroll through the file unless I also manually do ESC : (global-font-lock-mode 0) I'm sorry if I gave the impression I'm a regular C++ developer. I only use it occasionally. I just happened to remember finding myself unable to use Emacs for that particular file.

or editing TypeScript. (I am also running "lsp-mode.el" so there are more minor modes running than perhaps in your case.) So, I would remove any tree sitter extension you may have installed in the past. Then to activate the new "typescript-ts-mode" you need to do the following: 1. Clone this repository: https://github.com/casouri/tree-sitter-module/ 2. run "./build typescript" (you'll need build-essentials and a C++ compile but I gathered you are programming in C++, so) 3. Copy the resulting shared library "dist/libtree-sitter-typescript.so" into "~/.emacs.d/tree-sitter/". 4. Open a random typescript file and try "M-x typescript-ts-mode" which should not give you any error but nice syntax highlighting. 5. Of course, you'll need some tweaking to make it your default. Basically, you'll have to add "'typescript-ts-mode" to your "'auto-mode-list". You'll have to do the same for your C++ setup. U̶n̶f̶o̶r̶t̶u̶n̶a̶t̶e̶l̶y̶,̶ ̶t̶h̶e̶ ̶c̶o̶n̶v̶e̶n̶i̶e̶n̶c̶e̶ ̶"̶t̶r̶e̶e̶-̶s̶i̶t̶t̶e̶r̶-̶m̶o̶d̶u̶l̶e̶"̶ ̶b̶u̶i̶l̶d̶ ̶s̶c̶r̶i̶p̶t̶ ̶d̶o̶e̶s̶ ̶n̶o̶t̶ ̶s̶u̶p̶p̶o̶r̶t̶ ̶C̶+̶+̶ ̶o̶u̶t̶ ̶o̶f̶ ̶t̶h̶e̶ ̶b̶o̶x̶.̶ ̶B̶u̶t̶ ̶i̶t̶ ̶d̶o̶e̶s̶ ̶n̶o̶t̶ ̶l̶o̶o̶k̶ ̶c̶o̶m̶p̶l̶i̶c̶a̶t̶e̶d̶ ̶t̶o̶ ̶e̶x̶t̶e̶n̶d̶ ̶i̶t̶ ̶f̶o̶r̶ ̶y̶o̶u̶r̶ ̶p̶u̶r̶p̶o̶s̶e̶s̶.̶ Nonsense, it is supported: Just run "./build cpp". You also seem to need "./build c". This way, I was able to activate the new C++ treesitter mode. If you do not want to go ahead and migrate to built-in treesitter yet -- as you see it's still a bit fiddly to setup as it is brand new -- I would tackle your C++ performance problem first by using Emacs' profiler: 1. M-x profiler-start (select "CPU") 2. Open your C++ file slowing your Emacs down. 3. M-x profiler-stop 4. M-x profiler-report and see what it gives you. Perhaps post an issue with the Emacs maintainers and they can give a clue where your issue comes from. But usually something like this is caused by a run-a-way regex. Good luck!