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I've been using typescript-mode and tide for a long time but I wanted to try out tree-sitter and lsp-mode. I've got most things working except for one problem with syntax highlighting. When I first visit a TypeScript or TSX file, the buffer has no syntax highlighting. If I call (font-lock-update) then syntax highlighting starts working correctly in that buffer.

I can confirm that the two major modes I'm using are typescript-ts-mode and tsx-ts-mode. When I first visit a file and check C-h m, I can see that "Global minor mode global-font-lock-mode" is enabled. After I call (font-lock-update) I can see that "Local minor mode font-lock-mode" is enabled.

I customise these two major modes with a hook function that looks like this:

(defun setup-typescript-mode ()
  (interactive)
  (lsp)
  (flycheck-mode +1)
  (setq flycheck-check-syntax-automatically '(save mode-enabled))
  (eldoc-mode +1)
  (company-mode +1)
  (prettier-js-mode)
  (git-gutter+-mode)
  (yas-minor-mode-on)
  (tsi-typescript-mode 1)
  (turn-on-font-lock))

(add-hook 'typescript-ts-mode-hook #'setup-typescript-mode)
(add-hook 'tsx-ts-mode-hook #'setup-typescript-mode)

I tried adding that call to (turn-on-font-lock) in response to this problem but it hasn't fixed it.

Any ideas how I can get syntax highlighting to work here when I first visit a file and without having to do M-x font-lock-update every time?

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