module Comparable
module Enumerable
module JSON
module Kernel
module Opal
module Racc
module Template
class Array
class BasicObject
class Boolean
class Class
class Date
class Exception
class Hash
class MatchData
class Method
class NilClass
class Numeric
class Opal::Environment
class Opal::Grammar
class Opal::Grammar::LexerScope
class Opal::Parser
class Opal::Parser::Scope
class Opal::Processor
class Proc
class Racc::Parser
class Range
class Regexp
class String
class StringScanner
class Time
opal
0.3.37
# between?
def between?(min, max) self > min && self < max end