planning

node_modules/mdast-util-to-hast/lib/footer.js

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+'use strict'
+
+module.exports = generateFootnotes
+
+var thematicBreak = require('./handlers/thematic-break')
+var list = require('./handlers/list')
+var wrap = require('./wrap')
+
+function generateFootnotes(h) {
+  var footnotes = h.footnotes
+  var length = footnotes.length
+  var index = -1
+  var listItems = []
+  var def
+  var backReference
+  var content
+  var tail
+
+  if (!length) {
+    return null
+  }
+
+  while (++index < length) {
+    def = footnotes[index]
+    content = def.children.concat()
+    tail = content[content.length - 1]
+    backReference = {
+      type: 'link',
+      url: '#fnref-' + def.identifier,
+      data: {hProperties: {className: ['footnote-backref']}},
+      children: [{type: 'text', value: '↩'}]
+    }
+
+    if (!tail || tail.type !== 'paragraph') {
+      tail = {type: 'paragraph', children: []}
+      content.push(tail)
+    }
+
+    tail.children.push(backReference)
+
+    listItems[index] = {
+      type: 'listItem',
+      data: {hProperties: {id: 'fn-' + def.identifier}},
+      children: content,
+      position: def.position
+    }
+  }
+
+  return h(
+    null,
+    'div',
+    {className: ['footnotes']},
+    wrap(
+      [
+        thematicBreak(h),
+        list(h, {type: 'list', ordered: true, children: listItems})
+      ],
+      true
+    )
+  )
+}