For a current hobby project I need the ability to generate seeded random numbers and/or sample items from collections in either the JVM or the browser. The PPRNG lib offers seedable random numbers, but it uses different generators depending on the environment. Given a seed I want to generate the same sequence of numbers regardless where the code is running.
So I've open-sourced a little library, cljx-sampling, that uses a seedable 32-bit Xorshift random number generator for consistent results in both Clojure and Clojurescript. I also reused some of my code from bigml/sampling and combined it with the Xorshift RNG to allow for convenient (and still consistent) in-memory samples over collections. Maybe you'll find it useful?
https://github.com/ashenfad/cljx-sampling