Add comprehensive tests for role middleware and fix package dependencies

node_modules/@sinonjs/samsam/lib/is-date.js

@@ -0,0 +1,14 @@
+"use strict";
+
+/**
+ * Returns `true` when `value` is an instance of Date
+ *
+ * @private
+ * @param  {Date}  value The value to examine
+ * @returns {boolean}     `true` when `value` is an instance of Date
+ */
+function isDate(value) {
+    return value instanceof Date;
+}
+
+module.exports = isDate;