vue父组件调用子组件方法报错问题及解决

setup() {
	const getList = () =>{
		const date = moment(new Date()).format('YYYY-MM')
		loading.value = true
		apiGetPageList({
                salaryDate: date,
                page: state.pagination.page,
                limit: state.pagination.limit,
                jobNo: state.formState.searchValue ? state.formState.searchValue : null
            }).then((res: any)=> {
                if (res.data.status == 200) {
                    state.dataSource = res.data.data.rows
                    state.pagination.total = res.data.data.total
                } else {
                    Message.error(res.data.message ? res.data.message : "获取数据失败")
                }
            }).finally(()=>{
                loading.value = false
            })
	}
	return {
		getList
	}
	
}

setup() {
	const changeTab = (active: any) => {
            switch (active) {
                case "2":
                    console.log(33333,areaWorkDay)
                    nextTick(()=>{
                        areaWorkDay.value.editTableData = {}
                        areaWorkDay.value.getPageList()
                        areaWorkDay.value.formRef.resetFields()
                    })
                    break;
                case "3":
                    console.log(111,monthSalaryRef)
                    // monthSalaryRef.value.$emit('getList')
                    nextTick(()=>{
                        monthSalaryRef.value.editTableData = {}
                        monthSalaryRef.value.getList()
                        monthSalaryRef.value.monthRef.resetFields()
                    })
                    break;
            }
        }
       	return {
       		changeTab
		}
}

this.$nextTick( () => {
    this.$refs.xxx.method()
} )