Opal Microbenchmarks from github.com/kaiwren/redson

bm_factorial.js

JS.Benchmarks.fact = function(n){
  if(n > 1) {
    return n * this.fact(n-1);
  }
  else {
    return 1;
  }
}

bm_factorial.rb

module Benchmarks
  def self.fact(n)
    if (n > 1)
      n * fact(n-1)
    else
      1
    end
  end
end

bm_fibonacci.js

JS.Benchmarks.fib = function(n){
  return n < 2 ? n : this.fib(n - 1) + this.fib(n - 2);
}

bm_fibonacci.rb

module Benchmarks
  def self.fib(n)
    n < 2 ? n : fib(n - 1) + fib(n - 2)
  end
end