1. emacs -Q 2. `(setq treesit-load-name-override-list '((tsx "libtree-sitter-tsx" "tree_sitter_typescript")))` 3. `(tsx-ts-mode)` this also crashes for me: 1. emacs -Q 2. `(setq treesit-load-name-override-list '((typescript "libtree-sitter-typescript" "tree_sitter_typescript")))` 3. `(typescript-ts-mode)` which is surprising since this does not crash for me: 1. emacs -Q 2. `(typescript-ts-mode)` (it gives me a warning that the TSX language grammar is unavailable, which I would expect. but I am able to activate typescript-ts-mode and see the correct indentation and syntax highlighting.) I have libtree-sitter-tsx.so and libtree-sitter-typescript.so in ~/emacs.d/tree-sitter , both of which were created via `treesit-install-language-grammar` in case that matters. I believe the entrypoint for both libraries is `tree_sitter_typescript` but please correct me if I'm mistaken (FWIW opening a shell and running those .so files through `strings` does give that as a result). emacs was built in a container using this Dockerfile and these commands: https://github.com/orzechowskid/emacs-docker/blob/main/src/Dockerfile https://github.com/orzechowskid/emacs-docker/blob/main/src/build-emacs.sh In GNU Emacs 29.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.33, cairo version 1.16.0) of 2023-02-07 built on buildkitsandbox Repository revision: 746748f5c283b98a221571e725833affe304a748 Repository branch: emacs-29 Windowing system distributor 'The X.Org Foundation', version 11.0.12013000 System Description: Ubuntu 22.04.1 LTS Configured features: CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LIBSELINUX LIBSYSTEMD MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER X11 XDBE XIM XINPUT2 XPM GTK3 ZLIB Important settings: locale-coding-system: nil Major mode: Fundamental Minor modes in effect: tooltip-mode: t global-eldoc-mode: t show-paren-mode: t electric-indent-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t blink-cursor-mode: t buffer-read-only: t line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr cl-print byte-opt gv bytecomp byte-compile treesit cl-seq thingatpt help-fns radix-tree help-mode emacsbug message mailcap yank-media puny dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util text-property-search time-date subr-x mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads dbusbind inotify dynamic-setting system-font-setting font-render-setting cairo move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process emacs) Memory information: ((conses 16 53605 19942) (symbols 48 6189 0) (strings 32 18850 1951) (string-bytes 1 509089) (vectors 16 11856) (vector-slots 8 172857 17236) (floats 8 31 50) (intervals 56 352 0) (buffers 984 12))