Echo JS 0.11.0

The goal is to evaluate the function with a runtime condition, so that prepack is forced to keep the dynamic evaluation. This can be done with Math.random() or +(new Date()) or many environment properties, but none of them are supported by Prepack. Any runtime-dependent expression throws an IntrospectionError:

console.log(Date[Math.random() > 0 ? "now" : "nope"]())