This is not a list of what is supported now or what will be supported. It's simply a growing list of possible methods to support in the future—either in a filter or a suggested NPM package.

• SecureRandom.alphanumeric(30) => "ixdGT9CAjpoEZ4IEiFnkCYICJFDhOI"
• SecureRandom.random_number(30) => 23
  • WIP: see: https://github.com/rubys/ruby2js/blob/master/lib/ruby2js/filter/securerandom.rb