rehype-image-attr; descriptions for plugins

rehype-image-attr.mjs

@@ -0,0 +1,13 @@
+// Adds some HTML attributes to images,
+// only loading=lazy for now
+
+import { selectAll } from 'unist-util-select'
+
+export default function rehypeImageAttr() {
+    return (tree, file) => {
+        const imgs = selectAll('element[tagName=img]', tree)
+        for (let img of imgs) {
+            img.properties.loading = 'lazy'
+        }
+    }
+}