planning

node_modules/micromark/dist/util/normalize-identifier.js

@@ -0,0 +1,18 @@
+'use strict'
+
+function normalizeIdentifier(value) {
+  return (
+    value // Collapse Markdown whitespace.
+      .replace(/[\t\n\r ]+/g, ' ') // Trim.
+      .replace(/^ | $/g, '') // Some characters are considered “uppercase”, but if their lowercase
+      // counterpart is uppercased will result in a different uppercase
+      // character.
+      // Hence, to get that form, we perform both lower- and uppercase.
+      // Upper case makes sure keys will not interact with default prototypal
+      // methods: no object method is uppercase.
+      .toLowerCase()
+      .toUpperCase()
+  )
+}
+
+module.exports = normalizeIdentifier