Test migration to jest by hand

Apparently using regular expressions is way easier.

test/forOwnRight/forOwnRight.js

@@ -0,0 +1,5 @@
+const forOwnRight = (obj, fn) =>
+Object.keys(obj)
+.reverse()
+.forEach(key => fn(obj[key], key, obj));
+module.exports = forOwnRight;