ts怎么对ref做类型定义？

Question

这段代码报找不到名称“Ref”。ts怎么对ref做类型定义呢？

import { ref, onMounted, onUnmounted } from 'vue'

const useMousePostion = (): {x: Ref<number>, y: Ref<number>} => {
  const x = ref(0)
  const y = ref(0)

  const handleMounse = (e:MouseEvent) => {
    x.value = e.pageX
    y.value = e.pageY
  }

  onMounted(() => {
    document.addEventListener('click', handleMounse)
  })

  onUnmounted(() => {
    document.addEventListener('click', handleMounse)
  })

  return {x, y}
}

export default useMousePostion

Answer 1

Answer 2

你这是vue么，自动修复，导入下Ref