Add comprehensive tests for role middleware and fix package dependencies

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

@@ -0,0 +1,29 @@
+"use strict";
+
+var div = typeof document !== "undefined" && document.createElement("div");
+
+/**
+ * Returns `true` when `object` is a DOM element node.
+ *
+ * Unlike Underscore.js/lodash, this function will return `false` if `object`
+ * is an *element-like* object, i.e. a regular object with a `nodeType`
+ * property that holds the value `1`.
+ *
+ * @alias module:samsam.isElement
+ * @param {object} object The object to examine
+ * @returns {boolean} Returns `true` for DOM element nodes
+ */
+function isElement(object) {
+    if (!object || object.nodeType !== 1 || !div) {
+        return false;
+    }
+    try {
+        object.appendChild(div);
+        object.removeChild(div);
+    } catch (e) {
+        return false;
+    }
+    return true;
+}
+
+module.exports = isElement;