diff --git a/core/siren-core-modules.el b/core/siren-core-modules.el
index 082c49b..16488c0 100644
--- a/core/siren-core-modules.el
+++ b/core/siren-core-modules.el
@@ -54,6 +54,9 @@
 (require 'siren-vertico)
 (require 'siren-fussy)
 
+;; Formatting
+(require 'siren-prettier-js)
+
 ;; Linting
 (require 'siren-flycheck)
 
diff --git a/modules/formatting/siren-prettier-js.el b/modules/formatting/siren-prettier-js.el
index 5f13c03..32f7d6e 100644
--- a/modules/formatting/siren-prettier-js.el
+++ b/modules/formatting/siren-prettier-js.el
@@ -8,10 +8,19 @@
 
 (use-package prettier-js
   :defer t
-  :hook (prettier-js-mode . siren-prettier-js-mode-setup)
+  :hook
+  ((conf-toml-mode
+    css-mode
+    markdown-mode
+    nxml-mode
+    php-mode
+    rjsx-mode
+    typescript-mode
+    vue-mode) . siren-prettier-js-mode-enable)
 
   :preface
-  (defun siren-prettier-js-mode-setup ())
+  (defun siren-prettier-js-mode-enable ()
+    (prettier-js-mode t))
 
   :config
   (let ((rc (expand-file-name "~/.prettierrc.js")))
diff --git a/modules/languages/siren-css.el b/modules/languages/siren-css.el
index ffcfded..157afe4 100644
--- a/modules/languages/siren-css.el
+++ b/modules/languages/siren-css.el
@@ -7,7 +7,6 @@
 ;;; Code:
 
 (require 'siren-lsp)
-(require 'siren-prettier-js)
 (require 'siren-rainbow)
 
 (use-package css-mode
@@ -23,7 +22,6 @@
   (defun siren-css-mode-setup ()
     (setq-local tab-width 2)
 
-    (prettier-js-mode)
     (lsp-deferred)
     (rainbow-mode +1)))
 
diff --git a/modules/languages/siren-jsx.el b/modules/languages/siren-jsx.el
index e9a9aeb..75e42df 100644
--- a/modules/languages/siren-jsx.el
+++ b/modules/languages/siren-jsx.el
@@ -7,7 +7,6 @@
 ;;; Code:
 
 (require 'siren-origami)
-(require 'siren-prettier-js)
 
 (use-package rjsx-mode
   :mode "components\\/.*\\.js\\'"
@@ -16,7 +15,6 @@
 
   :preface
   (defun siren-rjsx-mode-setup ()
-    (prettier-js-mode +1)
     (origami-mode t)
     (subword-mode t))
 
diff --git a/modules/languages/siren-markdown.el b/modules/languages/siren-markdown.el
index 237dfc2..5253908 100644
--- a/modules/languages/siren-markdown.el
+++ b/modules/languages/siren-markdown.el
@@ -10,7 +10,6 @@
 (require 'siren-display-line-numbers)
 (require 'siren-flyspell)
 (require 'siren-move-dup)
-(require 'siren-prettier-js)
 (require 'siren-smartparens)
 
 (use-package markdown-mode
@@ -42,21 +41,23 @@
   (defun siren-markdown-mode-setup ()
     ;; Configure prettier after local vars are processed, allowing local
     ;; override of fill-column and have prettier respect it.
-    (add-hook 'hack-local-variables-hook
-              'siren-markdown-mode-setup-prettier nil t)
+    (when (fboundp 'prettier-js-mode)
+      (add-hook 'hack-local-variables-hook
+                'siren-markdown-mode-setup-prettier nil t))
 
     (setq-local markdown-asymmetric-header t)
 
     (siren-display-fill-column t)
     (siren-display-line-numbers t)
     (auto-fill-mode t)
-    (prettier-js-mode t)
     (flyspell-mode t)
     (smartparens-mode t)
     (subword-mode t))
 
   (defun siren-markdown-mode-setup-prettier ()
-    (let ((args '("--parser" "markdown")))
+    "Configure prettier-js-args based on auto-fill-column mode."
+    (let ((args (if (boundp 'prettier-js-args) prettier-js-args '())))
+      (setq args (append args '("--parser" "markdown")))
       (when (bound-and-true-p auto-fill-function) ;; is auto-fill-mode enabled?
         (setq args (append args (list "--print-width" (format "%d" fill-column)
                                       "--prose-wrap" "always"))))
diff --git a/modules/languages/siren-php.el b/modules/languages/siren-php.el
index 42dd82e..aa8c6b4 100644
--- a/modules/languages/siren-php.el
+++ b/modules/languages/siren-php.el
@@ -7,7 +7,6 @@
 ;;; Code:
 
 (require 'siren-origami)
-(require 'siren-prettier-js)
 (require 'siren-rainbow)
 
 (use-package php-mode
@@ -18,7 +17,6 @@
 
   :preface
   (defun siren-php-mode-setup ()
-    (prettier-js-mode t)
     (rainbow-mode t)
     (subword-mode t)
     (origami-mode t)))
diff --git a/modules/languages/siren-toml.el b/modules/languages/siren-toml.el
index b1790f8..6b7120d 100644
--- a/modules/languages/siren-toml.el
+++ b/modules/languages/siren-toml.el
@@ -6,7 +6,6 @@
 
 ;;; Code:
 
-(require 'siren-prettier-js)
 (require 'siren-prog-mode)
 
 (use-package conf-toml-mode
@@ -17,8 +16,7 @@
   :preface
   (defun siren-toml-mode-setup ()
     (run-hooks 'prog-mode-hook)
-    (setq-local tab-width 2)
-    (prettier-js-mode)))
+    (setq-local tab-width 2)))
 
 (provide 'siren-toml)
 ;;; siren-toml.el ends here
diff --git a/modules/languages/siren-typescript.el b/modules/languages/siren-typescript.el
index 2f0919d..c7333c3 100644
--- a/modules/languages/siren-typescript.el
+++ b/modules/languages/siren-typescript.el
@@ -9,7 +9,6 @@
 (require 'siren-flycheck)
 (require 'siren-lsp)
 (require 'siren-origami)
-(require 'siren-prettier-js)
 (require 'siren-web-mode)
 
 (use-package typescript-mode
@@ -56,7 +55,6 @@
     (setq-local flycheck-check-syntax-automatically '(save mode-enabled)
                 company-tooltip-align-annotations t)
 
-    (prettier-js-mode t)
     (flycheck-mode t)
     (eldoc-mode t)
     (tide-hl-identifier-mode t))
diff --git a/modules/languages/siren-vue.el b/modules/languages/siren-vue.el
index bd4ab7e..415ba46 100644
--- a/modules/languages/siren-vue.el
+++ b/modules/languages/siren-vue.el
@@ -6,7 +6,6 @@
 
 ;;; Code:
 
-(require 'siren-prettier-js)
 (require 'siren-mmm)
 
 (use-package vue-mode
@@ -15,7 +14,6 @@
 
   :preface
   (defun siren-vue-mode-setup ()
-    (prettier-js-mode)
     (lsp-deferred)
     (subword-mode)
     (siren-folding)))
diff --git a/modules/languages/siren-xml.el b/modules/languages/siren-xml.el
index 97486ae..c69dbb7 100644
--- a/modules/languages/siren-xml.el
+++ b/modules/languages/siren-xml.el
@@ -6,7 +6,6 @@
 
 ;;; Code:
 
-(require 'siren-prettier-js)
 (require 'siren-prog-mode)
 
 (use-package nxml-mode
@@ -21,8 +20,7 @@
   :preface
   (defun siren-xml-setup ()
     (run-hooks 'prog-mode-hook)
-    (setq-local tab-width 2)
-    (prettier-js-mode)))
+    (setq-local tab-width 2)))
 
 (provide 'siren-xml)
 ;;; siren-xml.el ends here