doomemacs/modules/lang/javascript/autoload.el
Henrik Lissner c7254e7bdc
Major optimization refactor, across the board
+ enable lexical-scope everywhere (lexical-binding = t): ~5-10% faster
  startup; ~5-20% general boost
+ reduce consing, function calls & garbage collection by preferring
  cl-loop & dolist over lambda closures (for mapc[ar], add-hook, and
  various cl-lib filter/map/reduce functions) -- where possible
+ prefer functions with dedicated opcodes, like assq (see byte-defop's
  in bytecomp.el for more)
+ prefer pcase & cond (faster) over cl-case
+ general refactor for code readability
+ ensure naming & style conventions are adhered to
+ appease byte-compiler by marking unused variables with underscore
+ defer minor mode activation to after-init, emacs-startup or
  window-setup hooks; a customization opportunity for users + ensures
  custom functionality won't interfere with startup.
2017-06-09 00:47:45 +02:00

75 lines
2.9 KiB
EmacsLisp

;;; lang/javascript/autoload.el -*- lexical-binding: t; -*-
(defvar +javascript-npm-conf (make-hash-table :test 'equal))
;;;###autoload
(defun +javascript-npm-conf (&optional project-root refresh-p)
"Retrieves an alist of this project's 'package.json'. If REFRESH-P is non-nil
ignore the cache."
(let ((project-root (or project-root (doom-project-root))))
(or (and (not refresh-p)
(gethash project-root +javascript-npm-conf))
(let ((package-file (expand-file-name "package.json" project-root)))
(when-let (json (and (file-exists-p package-file)
(json-read-file package-file)))
(puthash project-root json +javascript-npm-conf))))))
;;;###autoload
(defun +javascript-npm-dep-p (packages &optional project-root refresh-p)
(when-let (data (and (bound-and-true-p +javascript-npm-mode)
(+javascript-npm-conf project-root refresh-p)))
(let ((deps (append (cdr (assq 'dependencies data))
(cdr (assq 'devDependencies data)))))
(cond ((listp packages)
(funcall (if (eq (car packages) 'and)
#'cl-every
#'cl-some)
(lambda (pkg) (assq pkg deps))
(if (listp packages) packages (list packages))))
((symbolp packages)
(assq packages deps))
(t (error "Expected a package symbol or list, got %s" packages))))))
;;;###autoload
(defun +javascript/repl ()
"Open a Javascript REPL. Meaning either `skewer-repl', if any of the
skewer-*-mode's are enabled, or `nodejs-repl' otherwise."
(interactive)
(call-interactively
(if (and (featurep 'skewer-mode)
(or skewer-mode skewer-css-mode skewer-html-mode))
'skewer-repl
'nodejs-repl)))
;;;###autoload
(defun +javascript/skewer-this-buffer ()
"Toggle a globalized skewer-mode, attaching an external browser (once),
initiating an internal httpd server (once) and enabling the appropriate
skewer-mode for the current buffer.
Run this for any buffer you want to skewer."
(interactive)
(when (bound-and-true-p impatient-mode)
(error "Skewer-mode isn't compatible with impatient mode"))
(require 'skewer-mode)
(unless (process-status "httpd")
(run-skewer))
(unless (and skewer-mode skewer-css-mode skewer-html-mode)
(pcase major-mode
((or 'css-mode 'scss-mode 'less-css-mode) (skewer-css-mode +1))
((or 'web-mode 'html-mode) (skewer-html-mode +1))
('js2-mode (skewer-mode +1))
(_ (error "Invalid mode %s" major-mode)))))
;;;###autoload
(defun +javascript/skewer-cleanup ()
"Disable skewer-mode globally and disable the httpd server."
(interactive)
(when (process-status "httpd")
(httpd-stop))
(dolist (buf (buffer-list))
(with-current-buffer buf
(if skewer-mode (skewer-mode -1))
(if skewer-css-mode (skewer-css-mode -1))
(if skewer-html-mode (skewer-html-mode -1)))))