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spacemacs/layers/+lang/javascript/funcs.el
Lucius Hu b395671066 javascript: refactor
- Moved backend determination to `config.el`
- Replaced unnecessary backquote construct with simple quotation
- Replaced `pcase` form with only one-arm with `when` or `unless` form
- Replaced `(when (not foo) bar)` with `(unless foo bar)`
- Replaced `(set (make-local-variable 'foo) bar)` with `(setq-local foo bar)`
- Replaccd `(cond ((eq foo) bar))` form with `(pcase (foo bar))`
2021-04-04 12:48:21 +02:00

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;;; funcs.el --- Javascript Layer functions File for Spacemacs
;;
;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
;;
;; Author: Muneeb Shaikh <muneeb@reversehack.in>
;; URL: https://github.com/syl20bnr/spacemacs
;;
;; This file is not part of GNU Emacs.
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;; backend
(defun spacemacs//javascript-setup-backend ()
"Conditionally setup javascript backend."
(pcase javascript-backend
('tern (spacemacs//javascript-setup-tern))
('tide (spacemacs//tide-setup))
('lsp (spacemacs//javascript-setup-lsp))))
(defun spacemacs//javascript-setup-company ()
"Conditionally setup company based on backend."
(when (eq javascript-backend 'tide)
(spacemacs//tide-setup-company 'js2-mode)))
(defun spacemacs//javascript-setup-dap ()
"Conditionally setup elixir DAP integration."
;; currently DAP is only available using LSP
(when (eq javascript-backend 'lsp)
(spacemacs//javascript-setup-lsp-dap)))
(defun spacemacs//javascript-setup-next-error-fn ()
"If the `syntax-checking' layer is enabled, then disable `js2-mode''s
`next-error-function', and let `flycheck' handle any errors."
(when (configuration-layer/layer-used-p 'syntax-checking)
(setq-local next-error-function nil)))
;; lsp
(defun spacemacs//javascript-setup-lsp ()
"Setup lsp backend."
(if (configuration-layer/layer-used-p 'lsp)
(progn
(unless javascript-lsp-linter
(setq-local lsp-diagnostics-provider :none))
(lsp))
(message (concat "`lsp' layer is not installed, "
"please add `lsp' layer to your dotfile."))))
(defun spacemacs//javascript-setup-lsp-dap ()
"Setup DAP integration."
(require 'dap-firefox)
(require 'dap-chrome))
;; tern
(defun spacemacs//javascript-setup-tern ()
(if (configuration-layer/layer-used-p 'tern)
(when (locate-file "tern" exec-path)
(spacemacs/tern-setup-tern))
(message (concat "Tern was configured as the javascript backend but "
"the `tern' layer is not present in your `.spacemacs'!"))))
;; js-doc
(defun spacemacs/js-doc-require ()
"Lazy load js-doc"
(require 'js-doc))
(defun spacemacs/js-doc-set-key-bindings (mode)
"Setup the key bindings for `js2-doc' for the given MODE."
(spacemacs/declare-prefix-for-mode mode "mrd" "documentation")
(spacemacs/set-leader-keys-for-major-mode mode
"rdb" 'js-doc-insert-file-doc
"rdf" (if (configuration-layer/package-used-p 'yasnippet)
'js-doc-insert-function-doc-snippet
'js-doc-insert-function-doc)
"rdt" 'js-doc-insert-tag
"rdh" 'js-doc-describe-tag))
;; js-refactor
(defun spacemacs/js2-refactor-require ()
"Lazy load js2-refactor"
(require 'js2-refactor))
;; skewer
(defun spacemacs/skewer-start-repl ()
"Attach a browser to Emacs and start a skewer REPL."
(interactive)
(run-skewer)
(skewer-repl))
(defun spacemacs/skewer-load-buffer-and-focus ()
"Execute whole buffer in browser and switch to REPL in insert state."
(interactive)
(skewer-load-buffer)
(skewer-repl)
(evil-insert-state))
(defun spacemacs/skewer-eval-defun-and-focus ()
"Execute function at point in browser and switch to REPL in insert state."
(interactive)
(skewer-eval-defun)
(skewer-repl)
(evil-insert-state))
(defun spacemacs/skewer-eval-region (beg end)
"Execute the region as JavaScript code in the attached browser."
(interactive "r")
(skewer-eval (buffer-substring beg end) #'skewer-post-minibuffer))
(defun spacemacs/skewer-eval-region-and-focus (beg end)
"Execute the region in browser and swith to REPL in insert state."
(interactive "r")
(spacemacs/skewer-eval-region beg end)
(skewer-repl)
(evil-insert-state))
;; Others
(defun spacemacs//javascript-setup-checkers ()
(when-let* ((found (executable-find "eslint_d")))
(setq-local flycheck-javascript-eslint-executable found)))
(defun spacemacs/javascript-format ()
"Call formatting tool specified in `javascript-fmt-tool'."
(interactive)
(pcase javascript-fmt-tool
('prettier (call-interactively 'prettier-js))
('web-beautify (call-interactively 'web-beautify-js))
(_ (error (concat "%s isn't valid javascript-fmt-tool value."
" It should be 'web-beutify or 'prettier.")
(symbol-name javascript-fmt-tool)))))
(defun spacemacs/javascript-fmt-before-save-hook ()
(add-hook 'before-save-hook 'spacemacs/javascript-format t t))