deno-emacs

#+TITLE: deno-emacs

A collection of utilities to allow for development with [[https://deno.land][deno]] in emacs!

This repository contains the following utilities:

• [[deno-fmt.el]]

• deno-fmt.el
  deno-fmt is function that formats the current buffer on save with [[https://deno.land/manual/tools/formatter][deno fmt]].
  The package also exports a minor mode that applies (deno-fmt) on save.

** Installation Feel free to replace typescript-mode / js2-mode in the following with your TypeScript/JavaScript mode of choice.

*** Vanilla [[https://melpa.org/#/getting-started][Configure emacs to use melpa]], and require deno-fmt in your emacs config #+BEGIN_SRC elisp (require 'deno-fmt) #+END_SRC then add hooks to automatically enable the minor mode #+BEGIN_SRC elisp (add-hook 'typescript-mode-hook 'deno-fmt-mode) (add-hook 'js2-mode-hook 'deno-fmt-mode) #+END_SRC

*** use-package Add the following to your emacs config #+BEGIN_SRC elisp (use-package deno-fmt :ensure t :hook (js2-mode typescript-mode)) #+END_SRC

*** Doom Emacs Add deno-fmt to your .doom.d/packages.el #+BEGIN_SRC elisp (package! deno-fmt) #+END_SRC then add hooks to .doom.d/config.el #+BEGIN_SRC elisp (add-hook 'typescript-mode-hook 'deno-fmt-mode) (add-hook 'js2-mode-hook 'deno-fmt-mode) #+END_SRC

*** spacemacs Add deno-fmt to dotspacemacs-additional-packages in your .spacemacs file: #+BEGIN_SRC elisp (defun dotspacemacs/layers () (setq-default ;; ... dotspacemacs-additional-packages '(deno-fmt))) #+END_SRC then add hooks in dotspacemacs/user-config #+BEGIN_SRC elisp (defun dotspacemacs/user-config () ;; ... (add-hook 'typescript-mode-hook 'deno-fmt-mode) (add-hook 'js2-mode-hook 'deno-fmt-mode)) #+END_SRC

** Only enable deno-fmt-mode for Deno projects The most reliable way to do this is to make sure your Deno projects always have a deno.jsonc or deno.json file in the root directory, then you can do something like: #+BEGIN_SRC elisp (defun deno-project-p () (let ((root (projectile-project-root))) (unless (null root) (let ((config1 (concat root "deno.jsonc")) (config2 (concat root "deno.json"))) (or (file-exists-p config1) (file-exists-p config2))))))

(defun fmt-for-deno () (if (deno-project-p) (deno-fmt-mode)))

(add-hook 'typescript-mode-hook #'fmt-for-deno) (add-hook 'js2-mode-hook #'fmt-for-deno) #+END_SRC