up n_m

node_modules/@mdx-js/mdx/lib/util/extnames-to-regex.js

@@ -0,0 +1,19 @@
+/**
+ * Turn a list of extnames (*with* dots) into an expression.
+ *
+ * @param {ReadonlyArray<string>} extnames
+ *   List of extnames.
+ * @returns {RegExp}
+ *   Regex matching them.
+ */
+export function extnamesToRegex(extnames) {
+  return new RegExp(
+    '\\.(' +
+      extnames
+        .map(function (d) {
+          return d.slice(1)
+        })
+        .join('|') +
+      ')([?#]|$)'
+  )
+}