module Opal
class Array
class Opal::Builder
class Opal::ERBParser
class Opal::Grammar
class Opal::Grammar::LexerScope
class Opal::OpalParseError
class Opal::Parser
class Opal::Parser::Scope
class Opal::RakeTask
class Symbol
opal
0.3.22
# add_local
def add_local(local) return if has_local? local @locals << local end