[Vue warn]: Invalid watch source:

A watch source can only be a getter/effect function, a ref, a reactive object, or an array of these types.

vue3 中watch对象写法错误；应改为（）=> 对象；

解决：

  watch(() => _.cloneDeep(props.obj), (newValue, oldValue) => {
    
  }, {deep: true})


//  import _ from "lodash";
//   _.cloneDeep 是解决多次watch 对象