class Opal::Nodes::ResBodyNode

def compile
  push 'if (Opal.rescue($err, ', expr(klasses), ')) {'
  indent do
    if lvar
      push expr(lvar.updated(nil, [*lvar.children, s(:js_tmp, '$err')]))
    end
    # Need to ensure we clear the current exception out after the rescue block ends
    line 'try {'
    indent do
      in_resbody do
        line stmt(rescue_body)
      end
    end
    line '} finally { Opal.pop_exception($err); }'
  end
  line '}'
end

def klasses
  klasses_sexp || s(:array, s(:const, nil, :StandardError))
end

def rescue_body
  body_code = (body || s(:nil))
  body_code = compiler.returns(body_code) unless stmt?
  body_code
end