Module: SecureRandom

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# File 'opal/stdlib/securerandom.rb', line 2
def self.uuid
 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.gsub(/[xy]/) do |ch,|
 %x{
 var r = Math.random() * 16 | 0,
 v = ch == "x" ? r : (r & 3 | 8);
 return v.toString(16);
 }
 end
end