[update 流程返回] 如果没有上一个页面就跳转到首页

src/mixins/WorkCenterMixin.js

@@ -1,6 +1,7 @@
 import { getProcessNodeList, queryTaskNameByTaskId } from '../api/workCenter'
 import Vue from 'vue'
 import { USER_INFO } from '../store/mutation-types'
+import { findFirstRoute } from '@/utils/util'
 
 export const WorkCenterMixin = {
   data () {
@@ -89,7 +90,12 @@ export const WorkCenterMixin = {
       let timer = setTimeout(() => {
         clearTimeout(timer)
         timer = null
-        this.$router.go(-1)
+        // 有上个页面就返回，否则就返回第一个页面
+        if (history.length > 1) {
+          this.$router.go(-1)
+        } else {
+          this.$router.replace({ path: findFirstRoute(this.$store.state.user.permissionList) })
+        }
       }, 700)
     },
     switchChange (value) {
@@ -104,7 +110,7 @@ export const WorkCenterMixin = {
    */
   beforeRouteEnter (to, from, next) {
     if (to.query.taskId) {
-      queryTaskNameByTaskId({taskId: to.query.taskId}).then(res => {
+      queryTaskNameByTaskId({ taskId: to.query.taskId }).then(res => {
         if (res.success) {
           to.query.taskName = res.result.taskName
         }