2011 Facebook login was broken because they had assumed a function on Date- maybe a date.js function? Working at LivingSocial we relied heavily on Facebook logi

2011 Facebook login was broken because they had assumed a function on Date- maybe a date.js function? Working at LivingSocial we relied heavily on Facebook login working. So did our competitor Groupon. I recall we figured out the Date dependency and patched it externally and deployed before Facebook or Groupon had it fixed a few hours later. Was a lot of fun and rewarding seeing this fixed so quickly.