Fix TS generating broken types

Author: wooorm

lib/index.js

@@ -31,12 +31,17 @@ unpack()
 /**
  * Merge emoticons in a `SentenceNode` into `EmoticonNode`s.
  *
- * @param node
+ * @param {Sentence}  node
  *   nlcst sentence to transform.
- * @returns
+ * @returns {undefined}
  *   Nothing.
  */
-export const emoticonModifier = modifyChildren(mergeEmoticons)
+export function emoticonModifier(node) {
+  modifier(node)
+}
+
+// To do: remove wrapper when TS no longer generates broken types.
+const modifier = modifyChildren(mergeEmoticons)
 
 /**
  * Merge emoticons into an `EmoticonNode`.