this post was submitted on 17 Oct 2023
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How to reduce lsp-mode input lag when working on javascript project? (alien.top)
submitted 11 months ago by blureglades@alien.top to c/emacs
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Hello, I'm currently experiencing a lot of input lag and slowness when working on javascript projects. May I ask what extra configuration I'm missing in order to fix this issue? I'm using doom emacs. My configuration looks as follows:

(use-package! lsp-mode
  :hook
  (rustic-mode . lsp)
  (json-mode . lsp)
  (sh-mode . lsp)
  (typescript-mode . lsp)
  (javascript-mode . lsp)
  (js2-mode . lsp)
  (rjsx-mode . lsp)
  :commands lsp
  :config
  (setq lsp-log-io nil)
  (setq lsp-eldoc-render-all nil)
  (setq lsp-inlay-hint-enable nil)
  (setq lsp-lens-enable nil)
  (setq lsp-signature-render-documentation nil)
  (setq lsp-signature-auto-activate nil)
  (setq lsp-eldoc-enable-hover nil)
  (setq lsp-modeline-code-actions-enable nil))

(use-package! lsp-ui
  :hook (lsp-mode . lsp-ui-mode)
  :config
  (setq lsp-eldoc-enable-hover nil)
  (setq eldoc-documentation-functions nil)
  (setq lsp-ui-sideline-enable nil)
  (setq lsp-ui-sideline-show-diagnostics nil)
  (setq lsp-ui-sideline-show-hover nil)
  (setq lsp-ui-peek-always-show nil)
  (setq lsp-eldoc-render-all nil)
  (setq lsp-eldoc-enable-hover nil)
  (setq lsp-ui-doc-enable nil))

As you can see, I have most lsp features disabled to improve performance, but yet I'm having a bad experience while working on JS files. I'd kindly appreciate any suggestion.

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[–] Qudit314159@alien.top 1 points 11 months ago

I haven't usedlsp-mode with JavaScript. However, the first thing to try is to check if there is an alternative server that might be faster. This makes a big difference for some languages.