class Opal::Nodes::KwoptArgNode


def m(kw: 1)
single optional keyword argument
A node responsible for extracting a

def compile 

def compile
  initialize_kw_args_if_needed
  kwoptarg_name = @sexp[1].to_sym
  default_value = @sexp[2]
  var_name = variable(kwoptarg_name)
  add_temp var_name
  line "if ((#{var_name} = $kwargs.$$smap['#{kwoptarg_name}']) == null) {"
  line "  #{var_name} = ", expr(default_value)
  line "}"
  scope.used_kwargs << kwoptarg_name
end