Update from Vibe Studio

node_modules/mdast-util-to-hast/lib/handlers/footnote.js

@@ -0,0 +1,45 @@
+/**
+ * @typedef {import('hast').Element} Element
+ * @typedef {import('mdast').Footnote} Footnote
+ * @typedef {import('../state.js').State} State
+ */
+
+import {footnoteReference} from './footnote-reference.js'
+
+// To do: when both:
+// * <https://github.com/micromark/micromark-extension-footnote>
+// * <https://github.com/syntax-tree/mdast-util-footnote>
+// …are archived, remove this (also from mdast).
+// These inline notes are not used in GFM.
+
+/**
+ * Turn an mdast `footnote` node into hast.
+ *
+ * @param {State} state
+ *   Info passed around.
+ * @param {Footnote} node
+ *   mdast node.
+ * @returns {Element}
+ *   hast node.
+ */
+export function footnote(state, node) {
+  const footnoteById = state.footnoteById
+  let no = 1
+
+  while (no in footnoteById) no++
+
+  const identifier = String(no)
+
+  footnoteById[identifier] = {
+    type: 'footnoteDefinition',
+    identifier,
+    children: [{type: 'paragraph', children: node.children}],
+    position: node.position
+  }
+
+  return footnoteReference(state, {
+    type: 'footnoteReference',
+    identifier,
+    position: node.position
+  })
+}