fix: use Vue async option for sync mode

.circleci/config.yml

@@ -9,8 +9,6 @@ restore_node_modules: &restore_node_modules
     name: Restore node_modules cache
     keys:
       - v1-dependencies-{{ .Branch }}-{{ checksum "yarn.lock" }}
-      - v1-dependencies-{{ .Branch }}-
-      - v1-dependencies-
 jobs:
   install:
     <<: *defaults

flow/config.flow.js

@@ -3,6 +3,5 @@ declare type Config = {
   mocks?: Object,
   methods?: { [name: string]: Function },
   provide?: Object,
-  logModifiedComponents?: boolean,
   silent?: boolean
 }

package.json

@@ -68,12 +68,12 @@
     "sinon-chai": "^2.10.0",
     "typescript": "^3.0.1",
     "vee-validate": "^2.1.3",
-    "vue": "2.5.16",
+    "vue": "2.5.21",
     "vue-class-component": "^6.1.2",
     "vue-loader": "^13.6.2",
     "vue-router": "^3.0.1",
-    "vue-server-renderer": "2.5.16",
-    "vue-template-compiler": "2.5.16",
+    "vue-server-renderer": "2.5.21",
+    "vue-template-compiler": "2.5.21",
     "vuepress": "^0.14.2",
     "vuepress-theme-vue": "^1.0.3",
     "vuex": "^3.0.1",

packages/create-instance/create-instance.js

@@ -72,10 +72,11 @@ export default function createInstance(
   componentOptions.$_vueTestUtils_original = component
 
   // make sure all extends are based on this instance
-  componentOptions._base = _Vue
 
   const Constructor = _Vue.extend(componentOptions).extend(instanceOptions)
 
+  Constructor.options._base = _Vue
+
   const scopedSlots = createScopedSlots(options.scopedSlots, _Vue)
 
   const parentComponentOptions = options.parentComponent || {}

packages/create-instance/extract-instance-options.js

@@ -11,7 +11,6 @@ const MOUNTING_OPTIONS = [
   'attrs',
   'listeners',
   'propsData',
-  'logModifiedComponents',
   'sync',
   'shouldProxy'
 ]