[kmavm]

Hi! We didn't do a great job writing about this at the time, but Slack's migration into HHVM took place in 2016. We've been gradually increasing the coverage of Hacklang (Facebook's gradually typed descendant of PHP) since then, and are now 100% Hacklang.

[dcgudeman]

I know that the HHVM team at facebook is implementing a pretty aggressive strategy to updating the language with regard to deprecating language features, how is this affecting you guys? How often are you guys updating to the latest version of hacklang/HHVM?