1import type { RehypePlugin } from "@astrojs/markdown-remark";
 2import { visit } from "unist-util-visit";
 3
 4// Feed readers load neither the site's stylesheets nor its scripts, so
 5// attributes that only serve them are dropped.
 6export const rehypeCleanProperties: RehypePlugin = () => (tree) => {
 7  visit(tree, "element", (node) => {
 8    if (node.properties.class) {
 9      delete node.properties.class;
10    }
11    for (const key of Object.keys(node.properties)) {
12      if (key.startsWith("data-")) {
13        delete node.properties[key];
14      }
15    }
16    if (node.properties.style) {
17      delete node.properties.style;
18    }
19  });
20};