some progress

node_modules/saslprep/lib/util.js

@@ -0,0 +1,21 @@
+'use strict';
+
+/**
+ * Create an array of numbers.
+ * @param {number} from
+ * @param {number} to
+ * @returns {number[]}
+ */
+function range(from, to) {
+  // TODO: make this inlined.
+  const list = new Array(to - from + 1);
+
+  for (let i = 0; i < list.length; i += 1) {
+    list[i] = from + i;
+  }
+  return list;
+}
+
+module.exports = {
+  range,
+};