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

node_modules/@sinonjs/commons/lib/every.js

@@ -0,0 +1,20 @@
+"use strict";
+
+// This is an `every` implementation that works for all iterables
+module.exports = function every(obj, fn) {
+    var pass = true;
+
+    try {
+        /* eslint-disable-next-line local-rules/no-prototype-methods */
+        obj.forEach(function() {
+            if (!fn.apply(this, arguments)) {
+                // Throwing an error is the only way to break `forEach`
+                throw new Error();
+            }
+        });
+    } catch (e) {
+        pass = false;
+    }
+
+    return pass;
+};