I am willing to pay 100 usd if you can do within 5 hours.
DO NOT NEED MORE BUDGET. THIS IS FINAL MAXIMUM BUDGET.
You need to confirm present working source on your mac OS
I will provide you source and spec.
Let's do it...
I have experience with Nodejs and Java both.
I can show you demo in Ubuntu Linux. I don't have the mac.
But believe me that won't make any difference