message: refactor: mark weex-specific block
diff: @@ -54,7 +54,8 @@ export function updateListeners (
  def = cur = on[name]
  old = oldOn[name]
  event = normalizeEvent(name)
  - if (isPlainObject(def)) {
  + // $flow-disable-line
  + if (__WEEX__ && isPlainObject(def)) {
  cur = def.handler
  event.params = def.params
  }
  