需求是：
表单编辑后没保存，跳转其他页面需要提示未保存，保存就继续form的submit，反之就是关闭弹窗，再切换菜单正常跳转路由。

关键代码如下：

const [initialFormValues, setInitialFormValues] = useState({});const initialFormValuesRef = useRef(initialFormValues);const handleGeneralForm = () => {const {avatar = '',tenantName = '',timeZoneId = '',tenantEmail = '',webSite = '',address = '',} = currentUserTenant;form.setFieldsValue({avatar,tenantName,timeZoneId,tenantEmail,webSite,address,});setInitialFormValues(form.getFieldsValue());};useEffect(() => {loadGetAllTimeZone();handleGeneralForm();initialFormValuesRef.current = form.getFieldsValue();}, []);const [deleteConfirmOpen, setDeleteConfirmOpen] = useState(false);const [blockOpen, setBlockOpen] = useState(false);const deleteAvatar = () => {form.setFieldsValue({avatar: '',icon: '',});setDeleteConfirmOpen(false);};useEffect(() => {const unblock = history.block(({ location, action }) => {if (action === 'PUSH' || action === 'REPLACE') {const pathname = location.pathname;unblock();const isFormChanged = isEqual(form.getFieldsValue(), initialFormValuesRef.current);if (!isFormChanged) {setBlockOpen(true);} else {history.push({pathname: pathname,search: location.search,});}}});return () => {unblock();};}, []);

import { isEqual } from 'lodash';

const isFormChanged = isEqual(form.getFieldsValue(), initialFormValuesRef.current);

这就是个对比