fix: compile mdx-deck

* revert: revert "Allow usage from the command line (#9)"

This reverts commit 9998d59.

* fix: add some missing dependencies

This reverts commit 9242bbb.

* fix: compile mdx-deck

Author: kantord

gatsby-config.js

@@ -3,5 +3,11 @@ module.exports = {
     {
       resolve: 'gatsby-theme-mdx-deck',
     },
+    {
+      resolve: 'gatsby-plugin-compile-es6-packages',
+      options: {
+        modules: ['mdx-deck', '@mdx-deck/themes', 'gatsby-theme-mdx-deck'],
+      },
+    },
   ],
 }