fix(ts): 修复 BPMN 设计器类型错误

- 设计器/预览补 DOM 空值保护与局部 service 类型（canvas/elementRegistry）
- UserTaskCustomConfig/ElementForm/ElementMultiInstance 等补 ref/数组/element 类型
- ProcessListener/Expression Dialog 补声明实际已 emit 的 select 事件
- UserTask 删除 return 后不可达旧代码
- ElementMultiInstance：loopCharacteristics 按需写入，不影响 ApproveMethod 扩展保存
- 运行时：keyboard 配置 { bindTo: document } → { bind: true }，适配 diagram-js 15

src/components/bpmnProcessDesigner/package/designer/ProcessDesigner.vue

@@ -405,7 +405,10 @@ console.log(additionalModules, 'additionalModules()')
 console.log(moddleExtensions, 'moddleExtensions()')
 const initBpmnModeler = () => {
   if (bpmnModeler) return
-  let data = document.getElementById('bpmnCanvas')
+  const data = document.getElementById('bpmnCanvas')
+  if (!data) {
+    return
+  }
   console.log(data, 'data')
   console.log(props.keyboard, 'props.keyboard')
   console.log(additionalModules, 'additionalModules()')
@@ -422,9 +425,9 @@ const initBpmnModeler = () => {
     // propertiesPanel: {
     // parent: '#js-properties-panel'
     // },
-    keyboard: props.keyboard ? { bindTo: document } : null,
+    keyboard: props.keyboard ? { bind: true } : null,
     // additionalModules: additionalModules.value,
-    additionalModules: additionalModules.value,
+    additionalModules: additionalModules.value as any[],
     moddleExtensions: moddleExtensions.value
 
     // additionalModules: [

src/components/bpmnProcessDesigner/package/designer/ProcessViewer.vue

@@ -140,6 +140,8 @@
 import '../theme/index.scss'
 import BpmnViewer from 'bpmn-js/lib/Viewer'
 import MoveCanvasModule from 'diagram-js/lib/navigation/movecanvas'
+import type Canvas from 'diagram-js/lib/core/Canvas'
+import type ElementRegistry from 'diagram-js/lib/core/ElementRegistry'
 import { ZoomOut, ZoomIn, ScaleToOriginal } from '@element-plus/icons-vue'
 import { DICT_TYPE } from '@/utils/dict'
 import { dateFormatter, formatPast2 } from '@/utils/formatTime'
@@ -170,10 +172,18 @@ const dialogTitle = ref<string | undefined>(undefined) // 弹窗标题
 const selectActivityType = ref<string | undefined>(undefined) // 选中 Task 的活动编号
 const selectTasks = ref<any[]>([]) // 选中的任务数组
 
+type BpmnCanvas = Omit<Canvas, 'zoom'> & {
+  _svg?: SVGSVGElement
+  zoom: (newScale?: number | 'fit-viewport', center?: 'auto' | { x: number; y: number }) => number
+}
+
+const getCanvas = () => bpmnViewer.value?.get<BpmnCanvas>('canvas')
+const getElementRegistry = () => bpmnViewer.value?.get<ElementRegistry>('elementRegistry')
+
 /** Zoom：恢复 */
 const processReZoom = () => {
   defaultZoom.value = 1
-  bpmnViewer.value?.get('canvas').zoom('fit-viewport', 'auto')
+  getCanvas()?.zoom('fit-viewport', 'auto')
 }
 
 let resizeObserver: ResizeObserver | null = null
@@ -218,7 +228,7 @@ const processZoomIn = (zoomStep = 0.1) => {
     throw new Error('[Process Designer Warn ]: The zoom ratio cannot be greater than 4')
   }
   defaultZoom.value = newZoom
-  bpmnViewer.value?.get('canvas').zoom(defaultZoom.value)
+  getCanvas()?.zoom(defaultZoom.value)
 }
 
 /** Zoom：缩小 */
@@ -228,7 +238,7 @@ const processZoomOut = (zoomStep = 0.1) => {
     throw new Error('[Process Designer Warn ]: The zoom ratio cannot be less than 0.2')
   }
   defaultZoom.value = newZoom
-  bpmnViewer.value?.get('canvas').zoom(defaultZoom.value)
+  getCanvas()?.zoom(defaultZoom.value)
 }
 
 /** 流程图预览清空 */
@@ -249,9 +259,9 @@ const addCustomDefs = () => {
   if (!bpmnViewer.value) {
     return
   }
-  const canvas = bpmnViewer.value?.get('canvas')
+  const canvas = getCanvas()
   const svg = canvas?._svg
-  svg.appendChild(customDefs.value)
+  svg?.appendChild(customDefs.value)
 }
 
 /** 节点选中 */
@@ -340,8 +350,11 @@ const setProcessStatus = (view: any) => {
     finishedSequenceFlowActivityIds,
     rejectedTaskActivityIds
   } = view
-  const canvas = bpmnViewer.value.get('canvas')
-  const elementRegistry = bpmnViewer.value.get('elementRegistry')
+  const canvas = getCanvas()
+  const elementRegistry = getElementRegistry()
+  if (!canvas || !elementRegistry) {
+    return
+  }
 
   // 已完成节点
   if (Array.isArray(finishedSequenceFlowActivityIds)) {
@@ -349,7 +362,7 @@ const setProcessStatus = (view: any) => {
       if (item != null) {
         canvas.addMarker(item, 'success')
         const element = elementRegistry.get(item)
-        const conditionExpression = element.businessObject.conditionExpression
+        const conditionExpression = element?.businessObject.conditionExpression
         if (conditionExpression) {
           canvas.addMarker(item, 'condition-expression')
         }

src/components/bpmnProcessDesigner/package/penal/custom-config/components/BoundaryEventTimer.vue

@@ -101,7 +101,7 @@ const maxRemindCount = ref(1)
 
 const elExtensionElements = ref()
 const otherExtensions = ref()
-const configExtensions = ref([])
+const configExtensions = ref<any[]>([])
 const eventDefinition = ref()
 
 const resetElement = () => {

src/components/bpmnProcessDesigner/package/penal/custom-config/components/UserTaskCustomConfig.vue

@@ -215,6 +215,18 @@ import * as UserApi from '@/api/system/user'
 import { useFormFieldsPermission } from '@/components/SimpleProcessDesignerV2/src/node'
 import { BpmModelFormType } from '@/utils/constants'
 
+type BpmnElement = {
+  id: string
+  type: string
+  businessObject: Record<string, any>
+  source?: BpmnElement
+  target?: BpmnElement
+}
+type ReturnTask = Record<string, any> & {
+  id: string
+  name?: string
+}
+
 defineOptions({ name: 'ElementCustomConfig4UserTask' })
 const props = defineProps({
   id: String,
@@ -231,16 +243,16 @@ const rejectHandlerTypeEl = ref()
 const rejectHandlerType = ref()
 const returnNodeIdEl = ref()
 const returnNodeId = ref()
-const returnTaskList = ref([])
+const returnTaskList = ref<ReturnTask[]>([])
 
 // 审批人为空时
 const assignEmptyHandlerTypeEl = ref()
 const assignEmptyHandlerType = ref()
 const assignEmptyUserIdsEl = ref()
-const assignEmptyUserIds = ref()
+const assignEmptyUserIds = ref<Array<string | number>>([])
 
 // 操作按钮
-const buttonsSettingEl = ref()
+const buttonsSettingEl = ref<any[]>([])
 const { btnDisplayNameEdit, changeBtnDisplayName } = useButtonsSetting()
 const btnDisplayNameBlurEvent = (index: number) => {
   btnDisplayNameEdit.value[index] = false
@@ -250,7 +262,7 @@ const btnDisplayNameBlurEvent = (index: number) => {
 }
 
 // 字段权限
-const fieldsPermissionEl = ref([])
+const fieldsPermissionEl = ref<any[]>([])
 const { formType, fieldsPermissionConfig, getNodeConfigFormFields } = useFormFieldsPermission(
   FieldPermissionType.READ
 )
@@ -451,18 +463,20 @@ watch(
   { immediate: true }
 )
 
-function findAllPredecessorsExcludingStart(elementId, modeler) {
+function findAllPredecessorsExcludingStart(elementId: string, modeler: any) {
   const elementRegistry = modeler.get('elementRegistry')
-  const allConnections = elementRegistry.filter((element) => element.type === 'bpmn:SequenceFlow')
-  const predecessors = new Set() // 使用 Set 来避免重复节点
-  const visited = new Set() // 用于记录已访问的节点
+  const allConnections = elementRegistry.filter(
+    (element: BpmnElement) => element.type === 'bpmn:SequenceFlow'
+  )
+  const predecessors = new Set<Record<string, any>>() // 使用 Set 来避免重复节点
+  const visited = new Set<BpmnElement>() // 用于记录已访问的节点
 
   // 检查是否是开始事件节点
-  function isStartEvent(element) {
+  function isStartEvent(element: BpmnElement) {
     return element.type === 'bpmn:StartEvent'
   }
 
-  function findPredecessorsRecursively(element) {
+  function findPredecessorsRecursively(element: BpmnElement) {
     // 如果该节点已经访问过，直接返回，避免循环
     if (visited.has(element)) {
       return
@@ -472,10 +486,15 @@ function findAllPredecessorsExcludingStart(elementId, modeler) {
     visited.add(element)
 
     // 获取与当前节点相连的所有连接
-    const incomingConnections = allConnections.filter((connection) => connection.target === element)
+    const incomingConnections = allConnections.filter(
+      (connection: BpmnElement) => connection.target === element
+    )
 
-    incomingConnections.forEach((connection) => {
+    incomingConnections.forEach((connection: BpmnElement) => {
       const source = connection.source // 获取前置节点
+      if (!source) {
+        return
+      }
 
       // 只添加不是开始事件的前置节点
       if (!isStartEvent(source)) {
@@ -491,7 +510,7 @@ function findAllPredecessorsExcludingStart(elementId, modeler) {
     findPredecessorsRecursively(targetElement)
   }
 
-  return Array.from(predecessors) // 返回前置节点数组
+  return Array.from(predecessors) as ReturnTask[] // 返回前置节点数组
 }
 
 function useButtonsSetting() {

src/components/bpmnProcessDesigner/package/penal/form/ElementForm.vue

@@ -236,7 +236,7 @@ const props = defineProps({
 })
 const prefix = inject('prefix')
 
-const formKey = ref(undefined)
+const formKey = ref<number | undefined>()
 const bpmnELement = ref()
 const elExtensionElements = ref()
 const formData = ref()
@@ -282,10 +282,10 @@ const updateElementExtensions = () => {
   })
 }
 
-const formList = ref([]) // 流程表单的下拉框的数据
+const formList = ref<Array<{ id: number; name: string }>>([]) // 流程表单的下拉框的数据
 onMounted(async () => {
   formList.value = await FormApi.getFormSimpleList()
-  formKey.value = parseInt(formKey.value)
+  formKey.value = formKey.value != null ? Number(formKey.value) : undefined
 })
 
 watch(

src/components/bpmnProcessDesigner/package/penal/listeners/ProcessListenerDialog.vue

@@ -76,8 +76,8 @@ const getList = async () => {
 }
 
 /** 提交表单 */
-const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
-const select = async (row) => {
+const emit = defineEmits(['success', 'select']) // 定义 success/select 事件，用于操作成功后的回调
+const select = async (row: ProcessListenerVO) => {
   dialogVisible.value = false
   // 发送操作成功的事件
   emit('select', row)

src/components/bpmnProcessDesigner/package/penal/multi-instance/ElementMultiInstance.vue

@@ -117,8 +117,8 @@ const props = defineProps({
 const prefix = inject('prefix')
 const loopCharacteristics = ref('')
 const loopInstanceForm = ref<any>({})
-const bpmnElement = ref(null)
-const multiLoopInstance = ref(null)
+const bpmnElement = ref<any | null>(null)
+const multiLoopInstance = ref<any | null>(null)
 const bpmnInstances = () => (window as any)?.bpmnInstances
 
 const changeLoopCharacteristicsType = (type) => {
@@ -261,7 +261,7 @@ const approveMethod = ref()
 const approveRatio = ref(100)
 const otherExtensions = ref()
 const getElementLoopNew = () => {
-  if (props.type === 'UserTask') {
+  if (props.type === 'UserTask' && bpmnElement.value) {
     const extensionElements =
       bpmnElement.value.businessObject?.extensionElements ??
       bpmnInstances().moddle.create('bpmn:ExtensionElements', { values: [] })
@@ -286,6 +286,9 @@ const onApproveRatioChange = () => {
   updateLoopCharacteristics()
 }
 const updateLoopCharacteristics = () => {
+  if (!bpmnElement.value) {
+    return
+  }
   // 根据ApproveMethod生成multiInstanceLoopCharacteristics节点
   if (approveMethod.value === ApproveMethodType.RANDOM_SELECT_ONE_APPROVE) {
     bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
@@ -334,9 +337,11 @@ const updateLoopCharacteristics = () => {
         }
       )
     }
-    bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
-      loopCharacteristics: toRaw(multiLoopInstance.value)
-    })
+    if (multiLoopInstance.value) {
+      bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
+        loopCharacteristics: toRaw(multiLoopInstance.value)
+      })
+    }
   }
 
   // 添加ApproveMethod到ExtensionElements

src/components/bpmnProcessDesigner/package/penal/task/task-components/ProcessExpressionDialog.vue

@@ -61,8 +61,8 @@ const getList = async () => {
 }
 
 /** 提交表单 */
-const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
-const select = async (row) => {
+const emit = defineEmits(['success', 'select']) // 定义 success/select 事件，用于操作成功后的回调
+const select = async (row: ProcessExpressionVO) => {
   dialogVisible.value = false
   // 发送操作成功的事件
   emit('select', row)

src/components/bpmnProcessDesigner/package/penal/task/task-components/UserTask.vue

@@ -233,7 +233,13 @@ const props = defineProps({
   type: String
 })
 const prefix = inject('prefix')
-const userTaskForm = ref({
+type CandidateParam = Array<string | number> | string | number
+type UserTaskForm = {
+  candidateStrategy?: CandidateStrategy
+  candidateParam: CandidateParam
+  skipExpression: string
+}
+const userTaskForm = ref<UserTaskForm>({
   candidateStrategy: undefined, // 分配规则
   candidateParam: [], // 分配选项
   skipExpression: '' // 跳过表达式
@@ -405,13 +411,6 @@ const updateElementTask = () => {
   bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
     extensionElements: extensions
   })
-
-  // 改用通过extensionElements来存储数据
-  return
-  bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
-    candidateStrategy: userTaskForm.value.candidateStrategy,
-    candidateParam: userTaskForm.value.candidateParam.join(',')
-  })
 }
 
 const updateSkipExpression = () => {