VueDropdown and VueButton(with v-tooltip) collides in electron-vue project

[gary-dgc]

@Akryum thanks for give us this great ui.
Here's my issue.
I try to use @vue/ui in electron, but find an issue when using v-tooltip directive. In order to reproduce it I create a demo project https://github.com/gary-dgc/test-proj

It’s simple that I just put following in the App.vue, when you start the electron, you’ll find the tooltip on button doesn’t work and get error log in console.

Cases I tried:
1- But if you show App.vue in plain web vue project, it works fine.
2- If leave VueDropdown or Vuebutton only one component in App.vue, it works fine.

@vue/ui version: 0.10.5

`/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:3448 [Vue warn]: Error in mounted hook: "TypeError: Cannot read property '$el' of undefined"

found in

--->


warn @ /gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:3448
/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:4717 TypeError: Cannot read property '$el' of undefined
at VueComponent.popper-node (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:12783:48)
at VueComponent.init (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:11706:34)
at VueComponent.mounted (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:11656:12)
at invokeWithErrorHandling (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:4683:59)
at callHook (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:7042:9)
at Object.insert (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:5968:9)
at invokeInsertHook (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:9169:30)
at Vue.patch [as patch] (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:9388:7)
at Vue._update (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:6768:21)
at Vue.updateComponent (/gdev/gp-node/test-proj/node_modules/@vue/ui/dist/vue-ui.umd.js:6889:12)`

[gary-dgc]

not figure out the root reason, but just find the work-around to fix it.

import Vue from 'vue'
import VTooltip from 'v-tooltip'
Vue.use(VueUi)
Vue.use(VTooltip) // the sequence is IMPROTANT, it must behind VueUi

Now seems every thing works well

[Akryum]

@vue/ui already installs v-tooltip, so you just need:

import Vue from 'vue'
import VueUI from '@vue/ui'
Vue.use(VueUI)