datapicker组件设置的最小时间时出现了一个BUG
当我设置min: new Date(1930, 0, 1) 的时候,把选项拉到最小值那年没问题,
但当我设置min: new Date(1930, 0, 30)的时候,把选项拉到1930的时候报错了

VM1374 vue.esm.js:611 [Vue warn]: Error in event handler for "change": "TypeError: Cannot read property 'children' of undefined"
found in
---> at node_modules/cube-ui/src/components/picker/picker.vue
at node_modules/cube-ui/src/components/cascade-picker/cascade-picker.vue
at node_modules/cube-ui/src/components/date-picker/date-picker.vue
at src/view/create/base.vue
at src/App.vue
warn @ VM1374 vue.esm.js:611
logError @ VM1374 vue.esm.js:1836
globalHandleError @ VM1374 vue.esm.js:1831
handleError @ VM1374 vue.esm.js:1820
Vue.$emit @ VM1374 vue.esm.js:2662
(anonymous) @ picker.vue?67c2:245
BScroll.trigger @ bscroll.esm.js?1906:131
BScroll.scrollTo @ bscroll.esm.js?1906:1555
BScroll.resetPosition @ bscroll.esm.js?1906:1634
BScroll.refresh @ bscroll.esm.js?1906:885
_createWheel @ picker.vue?67c2:248
(anonymous) @ picker.vue?67c2:215
(anonymous) @ VM1374 vue.esm.js:1937
flushCallbacks @ VM1374 vue.esm.js:1856
Promise.then (async)
microTimerFunc @ VM1374 vue.esm.js:1904
nextTick @ VM1374 vue.esm.js:1950
queueWatcher @ VM1374 vue.esm.js:3200
update @ VM1374 vue.esm.js:3342
notify @ VM1374 vue.esm.js:722
mutator @ VM1374 vue.esm.js:874
_pickerChange @ cascade-picker.vue?0290:68
invoker @ VM1374 vue.esm.js:2140
Vue.$emit @ VM1374 vue.esm.js:2660
(anonymous) @ picker.vue?67c2:245
BScroll.trigger @ bscroll.esm.js?1906:131
BScroll._transitionEnd @ bscroll.esm.js?1906:1422
BScroll.handleEvent @ bscroll.esm.js?1906:795
VM1374 vue.esm.js:1840 TypeError: Cannot read property 'children' of undefined
at VueComponent._updatePickerData (eval at ./node_modules/babel-loader/lib/index.js?{"plugins":[["babel-plugin-transform-modules",{"cube-ui":{"transform":"cube-ui/src/modules/${member}","kebabCase":true}}]]}!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./node_modules/cube-ui/src/components/cascade-picker/cascade-picker.vue (app.js:1054), :103:64)
at VueComponent._pickerChange (eval at ./node_modules/babel-loader/lib/index.js?{"plugins":[["babel-plugin-transform-modules",{"cube-ui":{"transform":"cube-ui/src/modules/${member}","kebabCase":true}}]]}!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./node_modules/cube-ui/src/components/cascade-picker/cascade-picker.vue (app.js:1054), :77:77)
at VueComponent.invoker (VM1374 vue.esm.js:2140)
at VueComponent.Vue.$emit (VM1374 vue.esm.js:2660)
at BScroll.eval (eval at ./node_modules/babel-loader/lib/index.js?{"plugins":[["babel-plugin-transform-modules",{"cube-ui":{"transform":"cube-ui/src/modules/${member}","kebabCase":true}}]]}!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./node_modules/cube-ui/src/components/picker/picker.vue (app.js:1190), :267:18)
at BScroll.trigger (bscroll.esm.js?1906:131)
at BScroll.scrollTo (bscroll.esm.js?1906:1555)
at BScroll.resetPosition (bscroll.esm.js?1906:1634)
at BScroll.refresh (bscroll.esm.js?1906:885)
at VueComponent._createWheel (eval at ./node_modules/babel-loader/lib/index.js?{"plugins":[["babel-plugin-transform-modules",{"cube-ui":{"transform":"cube-ui/src/modules/${member}","kebabCase":true}}]]}!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./node_modules/cube-ui/src/components/picker/picker.vue (app.js:1190), :270:24)