observers 监听多个值时报错

[ff77645]

当observers 监听多个值,且其中包含 properties 中的值时报错.

报错内容:

TypeError: Cannot read property '@@iterator' of undefined
    at _iterableToArray (iterableToArray.js:5)
    at _toConsumableArray (toConsumableArray.js:6)
    at ComponentCaller.handler (mergeOptions.js:175)
    at _callWithErrorHandling (errorHandling.js:7)
    at job (watch.js:115)
    at _watch (watch.js:143)
    at MpxProxy.watch (proxy.js:382)
    at proxy.js:344
    at Array.forEach (<anonymous>)
    at MpxProxy.initWatch (proxy.js:341)(env: Windows,mp,1.06.2409140; lib: 3.6.6)

代码复现:

createComponent({
  properties: {
    size: {
      type: String,
      value: ''
    }
  },
  data: { count: 1 },
  observers: {
    // 监听多个值,且其中包含 properties 的值
    'size,count'(val, old) {
      console.log('')
    }
  }
})