class Opal::Nodes::RegexpNode

def compile_static_regexp
  value = self.value.children[0]
  case value
  when ''
    push('/(?:)/')
  when /\(\?[(<>#]|[*+?]\+/
    # Safari/WebKit will not execute javascript code if it contains a lookbehind literal RegExp
    # and they fail with "Syntax Error". This tricks their parser by disguising the literal RegExp
    # as string for the dynamic $regexp helper. Safari/Webkit will still fail to execute the RegExp,
    # but at least they will parse and run everything else.
    #
    # Also, let's compile a couple of more patterns into $regexp calls, as there are many syntax
    # errors in RubySpec when ran in reverse, while there shouldn't be (they should be catchable
    # errors) - at least since Node 17.
    static_as_dynamic(value)
  else
    push "#{Regexp.new(value).inspect}#{flags.join}"
  end
end