Function queueFlushJob

src/apis/watch.ts:133–166

(
  vm: any,
  fn: () => void,
  mode: Exclude<FlushMode, 'sync'>
)

}

function queueFlushJob(
  vm: any,
  fn: () => void,
  mode: Exclude<FlushMode, 'sync'>
) {
  // flush all when beforeUpdate and updated are not fired
  const fallbackFlush = () => {
    vm.$nextTick(() => {
      if (vm[WatcherPreFlushQueueKey].length) {
        flushQueue(vm, WatcherPreFlushQueueKey)
      }
      if (vm[WatcherPostFlushQueueKey].length) {
        flushQueue(vm, WatcherPostFlushQueueKey)
      }
    })
  }

  switch (mode) {
    case 'pre':
      fallbackFlush()
      vm[WatcherPreFlushQueueKey].push(fn)
      break
    case 'post':
      fallbackFlush()
      vm[WatcherPostFlushQueueKey].push(fn)
      break
    default:
      assert(
        false,
        `flush must be one of ["post", "pre", "sync"], but got ${mode}`
      )
      break
  }
}

function createVueWatcher(
  vm: ComponentInstance,