Add markdown-it plugins.

- Use `markdown-it-anchor`.
- Use `markdown-it-attrs`.

Author: davidlehn

.eleventy.js

@@ -1,3 +1,5 @@
+import markdownItAnchor from 'markdown-it-anchor';
+import markdownItAttrs from 'markdown-it-attrs';
 import YAML from 'yaml';
 
 // development host for playground proxy
@@ -15,6 +17,17 @@ const drafts = [
 ];
 
 export default async function(eleventyConfig) {
+  eleventyConfig.amendLibrary('md', mdLib => {
+    mdLib
+      .set({
+        html: true,
+        linkify: true,
+        typographer: true
+      })
+      .use(markdownItAnchor)
+      .use(markdownItAttrs);
+  });
+
   eleventyConfig.addDataExtension('yaml', (contents) => YAML.parse(contents));
 
   eleventyConfig.addPassthroughCopy('.htaccess');

package.json

@@ -28,6 +28,8 @@
     "cbor2": "^2.0.1",
     "codemirror": "^6.0.2",
     "jsonld": "^9.0.0",
+    "markdown-it-anchor": "^9.2.0",
+    "markdown-it-attrs": "^4.3.1",
     "petite-vue": "^0.4.1",
     "rollup": "^4.53.2",
     "wrangler": "^4.49.0",