fix: allow installation on extended Vue copies

yyx990803 · yyx990803 · commit c87b72f2ff7f · 2017-09-25T18:29:54.000-04:00
diff --git a/src/store.js b/src/store.js
@@ -459,7 +459,7 @@ function unifyObjectStyle (type, payload, options) {
 }
 
 export function install (_Vue) {
-  if (Vue) {
+  if (Vue && _Vue === Vue) {
     if (process.env.NODE_ENV !== 'production') {
       console.error(
         '[vuex] already installed. Vue.use(Vuex) should be called only once.'

Original file line number	Diff line number	Diff line change
`@@ -459,7 +459,7 @@ function unifyObjectStyle (type, payload, options) {`
`459`	`459`	`}`
`460`	`460`
`461`	`461`	`export function install (_Vue) {`
`462`		`- if (Vue) {`
	`462`	`+ if (Vue && _Vue === Vue) {`
`463`	`463`	`if (process.env.NODE_ENV !== 'production') {`
`464`	`464`	`console.error(`
`465`	`465`	`'[vuex] already installed. Vue.use(Vuex) should be called only once.'`