From 6d30b1f785dec08f6953534b66c5dd37b765c305 Mon Sep 17 00:00:00 2001
From: GatsbyJS Bot <mathews.kyle+gatsbybot@gmail.com>
Date: Tue, 2 Nov 2021 08:47:22 -0600
Subject: [PATCH] initial (#33802) (#33818)

Co-authored-by: gatsbybot <mathews.kyle+gatsbybot@gmail.com>
Co-authored-by: Lennart <lekoarts@gmail.com>
---
 packages/gatsby-plugin-mdx/__tests__/gatsby-node.js | 1 +
 packages/gatsby-plugin-mdx/gatsby-node.js           | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/packages/gatsby-plugin-mdx/__tests__/gatsby-node.js b/packages/gatsby-plugin-mdx/__tests__/gatsby-node.js
index df7deffbfa0ba..f24ba7528839f 100644
--- a/packages/gatsby-plugin-mdx/__tests__/gatsby-node.js
+++ b/packages/gatsby-plugin-mdx/__tests__/gatsby-node.js
@@ -63,6 +63,7 @@ describe(`pluginOptionsSchema`, () => {
       mediaTypes: [`text/markdown`, `text/x-markdown`, `custom-media/type`],
       shouldBlockNodeFromTransformation: node => Boolean(node),
       root: `james-holden`,
+      commonmark: true,
     })
 
     expect(isValid).toBe(true)
diff --git a/packages/gatsby-plugin-mdx/gatsby-node.js b/packages/gatsby-plugin-mdx/gatsby-node.js
index 4c7b964582c29..d5bc469cf66f2 100644
--- a/packages/gatsby-plugin-mdx/gatsby-node.js
+++ b/packages/gatsby-plugin-mdx/gatsby-node.js
@@ -120,5 +120,10 @@ exports.pluginOptionsSchema = function ({ Joi }) {
       .description(
         `[deprecated] This is a legacy option that used to define root directory of the project. It was needed to generate a cache directory location. It currently has no effect.`
       ),
+    commonmark: Joi.boolean()
+      .default(false)
+      .description(
+        "MDX will be parsed using CommonMark."
+      ),
   })
 }