added unit testing, and started implementing unit tests...phew

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

@@ -0,0 +1,11 @@
+"use strict";
+
+function isNaN(value) {
+    // Unlike global isNaN, this avoids type coercion
+    // typeof check avoids IE host object issues, hat tip to
+    // lodash
+    var val = value; // JsLint thinks value !== value is "weird"
+    return typeof value === "number" && value !== val;
+}
+
+module.exports = isNaN;