对象的解构赋值是内部机制，先找回同名属性，再赋值给对应的变量，真正被赋值的是后者。

let node = {
   type:'Identifier',
   name:'foo',
   loc:{
       start:{
           line:1,
           column:1
       },
       end:{
           line:1,
           column:4
       }
   },
   method:function(){
     console.log('method');
   },
   range:[0,3]
};
//
let {
   loc:{start:start1},
   range:[startIndex]
} = node;
//将loc.start 解构值赋给一个start1变量
console.log('@@@@',start1,startIndex); 
//将mehtod 函数解构赋给method1 函数变量
let {
 method: method1    
} = node;
method1()

不难理解

<template>
<a-upload name="file" :showUploadList="false" :customRequest="(file) => handleImportXls(file, getImportUrl, reload)">
          <a-button preIcon="ant-design:import-outlined" type="primary">导入</a-button>
        </a-upload>
         <JImportModal @register="registerModalJimport" :url="getImportUrl" online />
</template>
 <script lang="ts" setup>
const [registerModalJimport, {openModal: openModalJimport }] = useModal();
 function handleImport() {
   //调用函数openModal: <T = any>(visible = true, data?: T, openOnSet = true): void
   //设置visible =true 显示弹出框
    openModalJimport(true);
  }
  </script>

useModal.ts

export function useModal(): UseModalReturnType {
  const modal = ref<Nullable<ModalMethods>>(null);
  const loaded = ref<Nullable<boolean>>(false);
  const uid = ref<string>('');

  function register(modalMethod: ModalMethods, uuid: string) {
    if (!getCurrentInstance()) {
      throw new Error('useModal() can only be used inside setup() or functional components!');
    }
    uid.value = uuid;
    isProdMode() &&
      onUnmounted(() => {
        modal.value = null;
        loaded.value = false;
        dataTransfer[unref(uid)] = null;
      });
    if (unref(loaded) && isProdMode() && modalMethod === unref(modal)) return;

    modal.value = modalMethod;
    loaded.value = true;
    modalMethod.emitVisible = (visible: boolean, uid: number) => {
      visibleData[uid] = visible;
    };
  }

  const getInstance = () => {
    const instance = unref(modal);
    if (!instance) {
      error('useModal instance is undefined!');
    }
    return instance;
  };

  const methods: ReturnMethods = {
    setModalProps: (props: Partial<ModalProps>): void => {
      getInstance()?.setModalProps(props);
    },

    getVisible: computed((): boolean => {
      return visibleData[~~unref(uid)];
    }),
    getOpen: computed((): boolean => {
      return visibleData[~~unref(uid)];
    }),
    redoModalHeight: () => {
      getInstance()?.redoModalHeight?.();
    },
	// visible 是否显示	
  openModal: <T = any>(visible = true, data?: T, openOnSet = true): void => {
 
      getInstance()?.setModalProps({
        open: visible,
      });
 

      if (!data) return;
      const id = unref(uid);
      if (openOnSet) {
        dataTransfer[id] = null;
        dataTransfer[id] = toRaw(data);
        return;
      }
      const equal = isEqual(toRaw(dataTransfer[id]), toRaw(data));
      if (!equal) {
        dataTransfer[id] = toRaw(data);
      }
    },

    closeModal: () => {
      // update-begin--author:liaozhiyang---date:20231218---for：【QQYUN-6366】升级到antd4.x
      getInstance()?.setModalProps({ open: false });
      // update-end--author:liaozhiyang---date:20231218---for：【QQYUN-6366】升级到antd4.x
    },
  };
  return [register, methods];
}