message: test(observe-dom): fix test
diff: @@ -44,7 +44,8 @@ const BScroll = jest.fn().mockImplementation((wrapper, options) => {
  const eventTypes = eventEmitter.eventTypes
  eventTypes[name] = name
  })
  - })
  + }),
  + plugins: {}
  }
  Object.setPrototypeOf(res, eventEmitter)
  