planning

node_modules/mdast-util-to-markdown/lib/util/check-quote.js

@@ -0,0 +1,15 @@
+module.exports = checkQuote
+
+function checkQuote(context) {
+  var marker = context.options.quote || '"'
+
+  if (marker !== '"' && marker !== "'") {
+    throw new Error(
+      'Cannot serialize title with `' +
+        marker +
+        '` for `options.quote`, expected `"`, or `\'`'
+    )
+  }
+
+  return marker
+}