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.emacs.d/modules/languages/siren-js.el

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EmacsLisp

;;; siren-js.el --- jimeh's Emacs Siren: js-mode configuration. -*- lexical-binding: nil; -*-
;;; Commentary:
;; Basic configuration for js-mode.
;;; Code:
(require 'siren-lsp)
(use-package js-mode
:ensure nil
:mode "\\.js\\'" "\\.pac\\'"
:general
(:keymaps 'js-mode-map
"C-j" 'newline-and-indent)
:hook
(js-mode . siren-js-mode-setup)
:custom
(js-indent-level 2)
:preface
(defun siren-js-mode-setup ()
"Default tweaks for `js-mode'."
(setq-local indent-level js-indent-level
tab-width js-indent-level)))
(when (fboundp 'js-ts-mode)
(use-package js-ts-mode
:ensure nil
;;; Disable, as js-ts-mode is quite underbaked and lacks a lot of syntax
;;; highlighting features compared to js-mode, and even more when
;;; tree-sitter-mode is added as well.
;; :mode "\\.js\\'" "\\.pac\\'"
:hook
(js-ts-mode . siren-js-ts-mode-setup)
:general
(:keymaps 'js-ts-mode-map
"C-j" 'newline-and-indent)
:custom
(js-indent-level 2)
:preface
(defun siren-js-ts-mode-setup ())
:config
(siren-treesit-auto-ensure-grammar 'javascript)))
(use-package lsp-javascript
:ensure nil
:defer t
:hook
(js-mode . siren-lsp-js-mode-setup)
(js-ts-mode . siren-lsp-js-mode-setup)
:preface
(defun siren-lsp-js-mode-setup ()
;; Disable semantic tokens as it typically causes an annoying delay with the
;; syntax highlighting as you type. Essentially all new text is a very faded
;; out grey color for the first 1-2 seconds as you type.
(setq-local lsp-semantic-tokens-enable nil)
(lsp-deferred)
(lsp-format-buffer-on-save-mode)))
(provide 'siren-js)
;;; siren-js.el ends here