feat(lang): improve jsonnet-mode setup with format on save, and more

modules/languages/siren-jsonnet.el

@@ -7,12 +7,35 @@
 ;;; Code:
 
 (use-package jsonnet-mode
+  :bind (:map jsonnet-mode-map
+              ("C-c C-c" . jsonnet-eval-buffer)
+              ("C-c C-f" . jsonnet-reformat-buffer)
+              ("C-c C-j" . jsonnet-jump))
+
   :hook
   (jsonnet-mode . siren-jsonnet-mode-setup)
 
+  :custom
+  (jsonnet-library-search-directories '("vendor"))
+
   :init
   (defun siren-jsonnet-mode-setup ()
-    "Default tweaks for `jsonnet-mode'."))
+    "Default tweaks for `jsonnet-mode'."
+    (jsonnet-format-buffer-on-save-mode t)
+    (company-mode)
+    (subword-mode)
+    (siren-folding))
+
+  :config
+  (with-eval-after-load 'flycheck
+    (setq flycheck-jsonnet-executable "jsonnet -jpath vendor"))
+
+  (define-minor-mode jsonnet-format-buffer-on-save-mode
+    "Run jsonnet-format-buffer as a before-save-hook."
+    :lighter " fmt"
+    (if jsonnet-format-buffer-on-save-mode
+        (add-hook 'before-save-hook 'jsonnet-reformat-buffer t t)
+      (remove-hook 'before-save-hook 'jsonnet-reformat-buffer t))))
 
 (provide 'siren-jsonnet)
 ;;; siren-js.el ends here