ths fix doesn't seem to work: gatsbyjs/gatsby#28031 (comment)

Author: nikoladev

gatsby-config.js

@@ -17,7 +17,10 @@ module.exports = {
         },
         remarkPlugins: [
           require('remark-math'),
-          require('remark-html-katex'),
+          // require('remark-html-katex'),
+        ],
+        rehypePlugins: [
+          require('rehype-katex')
         ],
       },
     },

package.json

@@ -12,7 +12,7 @@
     "@mdx-js/react": "v2.0.0-next.8",
     "gatsby-plugin-mdx": "1.4.0",
     "gatsby-source-filesystem": "2.5.0",
-    "remark-html-katex": "3.0.0",
+    "rehype-katex": "4.0.0",
     "remark-math": "3.0.1"
   },
   "scripts": {

src/pages/index.mdx

@@ -15,20 +15,20 @@ Also inline $a^2 + b^2 = c^2$ as you can see.
 
 "Complex" Katex does not work:
 
-```
+
 $$
 \begin{aligned}
   \bar{x} &= \dfrac{0+1+2+ \ldots +8}{9} = 3.56 \\
   \bar{y} &= \dfrac{23.5+25+ \ldots +37.5}{9}=30
 \end{aligned}
 $$
-```
+
 
 Another example that doesn't work:
 
-```
+
 $x < 3$
-```
+
 
 > _(⚠️ remove the surrounding backticks to see the error)_
 

yarn.lock

@@ -6156,6 +6156,11 @@ hast-util-from-parse5@^6.0.0:
     vfile-location "^3.2.0"
     web-namespaces "^1.0.0"
 
+hast-util-is-element@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/hast-util-is-element/-/hast-util-is-element-1.1.0.tgz#3b3ed5159a2707c6137b48637fbfe068e175a425"
+  integrity sha512-oUmNua0bFbdrD/ELDSSEadRVtWZOf3iF6Lbv81naqsIV99RnSCieTbWuWCY8BAeEfKJTKl0gRdokv+dELutHGQ==
+
 hast-util-parse-selector@^2.0.0:
   version "2.2.5"
   resolved "https://registry.yarnpkg.com/hast-util-parse-selector/-/hast-util-parse-selector-2.2.5.tgz#d57c23f4da16ae3c63b3b6ca4616683313499c3a"
@@ -6188,6 +6193,15 @@ hast-util-to-parse5@^6.0.0:
     xtend "^4.0.0"
     zwitch "^1.0.0"
 
+hast-util-to-text@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/hast-util-to-text/-/hast-util-to-text-2.0.1.tgz#04f2e065642a0edb08341976084aa217624a0f8b"
+  integrity sha512-8nsgCARfs6VkwH2jJU9b8LNTuR4700na+0h3PqCaEk4MAnMDeu5P0tP8mjk9LLNGxIeQRLbiDbZVw6rku+pYsQ==
+  dependencies:
+    hast-util-is-element "^1.0.0"
+    repeat-string "^1.0.0"
+    unist-util-find-after "^3.0.0"
+
 hastscript@^6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/hastscript/-/hastscript-6.0.0.tgz#e8768d7eac56c3fdeac8a92830d58e811e5bf640"
@@ -9980,6 +9994,18 @@ regjsparser@^0.6.4:
   dependencies:
     jsesc "~0.5.0"
 
+[email protected]:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/rehype-katex/-/rehype-katex-4.0.0.tgz#ce11a5db0bff014350e7a9cfd30147d314b14330"
+  integrity sha512-0mgBqYugQyIW0eUl6RDOZ28Cat2YzrnWGaYgKCMQnJw6ClmKgLqXBnkDAPGh2mwxvkkKwQOUMUpSLpA5rt7rzA==
+  dependencies:
+    "@types/katex" "^0.11.0"
+    hast-util-to-text "^2.0.0"
+    katex "^0.12.0"
+    rehype-parse "^7.0.0"
+    unified "^9.0.0"
+    unist-util-visit "^2.0.0"
+
 rehype-parse@^7.0.0:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/rehype-parse/-/rehype-parse-7.0.1.tgz#58900f6702b56767814afc2a9efa2d42b1c90c57"
@@ -9993,17 +10019,6 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/remark-footnotes/-/remark-footnotes-1.0.0.tgz#9c7a97f9a89397858a50033373020b1ea2aad011"
   integrity sha512-X9Ncj4cj3/CIvLI2Z9IobHtVi8FVdUrdJkCNaL9kdX8ohfsi18DXHsCVd/A7ssARBdccdDb5ODnt62WuEWaM/g==
 
-[email protected]:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/remark-html-katex/-/remark-html-katex-3.0.0.tgz#09b047e70a398e0c9c762a21c803e4ce73d39cb6"
-  integrity sha512-T8PqHlQ8ftOPqxh0XoRNSRKHhSOoIJLnmeeOvdsPz2VOy8hMFC4IFVKA6EPdWFzXRZeT+pCjewVh0dg++vVYHQ==
-  dependencies:
-    "@types/katex" "^0.11.0"
-    katex "^0.12.0"
-    rehype-parse "^7.0.0"
-    unified "^9.0.0"
-    unist-util-visit "^2.0.0"
-
 [email protected]:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/remark-math/-/remark-math-3.0.1.tgz#85a02a15b15cad34b89a27244d4887b3a95185bb"
@@ -11776,6 +11791,13 @@ [email protected], unist-builder@^2.0.0:
   resolved "https://registry.yarnpkg.com/unist-builder/-/unist-builder-2.0.3.tgz#77648711b5d86af0942f334397a33c5e91516436"
   integrity sha512-f98yt5pnlMWlzP539tPc4grGMsFaQQlP/vM396b00jngsiINumNmsY8rkXjfoi1c6QaM8nQ3vaGDuoKWbe/1Uw==
 
+unist-util-find-after@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/unist-util-find-after/-/unist-util-find-after-3.0.0.tgz#5c65fcebf64d4f8f496db46fa8fd0fbf354b43e6"
+  integrity sha512-ojlBqfsBftYXExNu3+hHLfJQ/X1jYY/9vdm4yZWjIbf0VuWF6CRufci1ZyoD/wV2TYMKxXUoNuoqwy+CkgzAiQ==
+  dependencies:
+    unist-util-is "^4.0.0"
+
 unist-util-generated@^1.0.0:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/unist-util-generated/-/unist-util-generated-1.1.6.tgz#5ab51f689e2992a472beb1b35f2ce7ff2f324d4b"