fix: only set plugin install to false if it exists

Author: eddyerburgh

package-lock.json

@@ -87,6 +87,7 @@
     "vue-loader": "^13.0.5",
     "vue-router": "^2.7.0",
     "vue-template-compiler": "^2.5.2",
+    "vuetify": "^0.16.9",
     "vuex": "^2.4.1",
     "webpack": "^3.6.0",
     "webpack-node-externals": "^1.6.0"

package.json

@@ -31,8 +31,12 @@ function createLocalVue (): Component {
   // compat for vue-router < 2.7.1 where it does not allow multiple installs
   const use = instance.use
   instance.use = (plugin, ...rest) => {
-    plugin.installed = false
-    plugin.install.installed = false
+    if (plugin.installed === true) {
+      plugin.installed = false
+    }
+    if (plugin.install && plugin.install.installed === true) {
+      plugin.install.installed = false
+    }
     use.call(instance, plugin, ...rest)
   }
   return instance

src/create-local-vue.js

@@ -1,5 +1,6 @@
 import createLocalVue from '~src/create-local-vue'
 import Vuex from 'vuex'
+import Vuetify from 'vuetify'
 import VueRouter from 'vue-router'
 import mount from '~src/mount'
 import Component from '~resources/components/component.vue'
@@ -106,4 +107,9 @@ describe('createLocalVue', () => {
     }
     localVue.use(plugin, pluginOptions)
   })
+
+  it('installs Vutify successfuly', () => {
+    const localVue = createLocalVue()
+    localVue.use(Vuetify)
+  })
 })