kazupon
diff --git a/‎src/mixin.js‎
Lines changed: 4 additions & 4 deletions b/‎src/mixin.js‎
Lines changed: 4 additions & 4 deletions
diff --git a/‎src/util.js‎
Lines changed: 0 additions & 21 deletions b/‎src/util.js‎
Lines changed: 0 additions & 21 deletions
@@ -1,7 +1,7 @@
 /* @flow */
 
 import VueI18n from './index'
-import { typeName, isPlainObject, warn } from './util'
+import { isPlainObject, warn } from './util'
 
 export default {
   computed: {
@@ -45,11 +45,11 @@ export default {
   beforeCreate () {
     const options: any = this.$options
     if (options.i18n) {
-      if (typeName(options.i18n) === 'VueI18n') {
+      if (options.i18n instanceof VueI18n) {
         this.$i18n = options.i18n
       } else if (isPlainObject(options.i18n)) {
         // component local i18n
-        if (this.$root && this.$root.$i18n && typeName(this.$root.$i18n) === 'VueI18n') {
+        if (this.$root && this.$root.$i18n && this.$root.$i18n instanceof VueI18n) {
           options.i18n.root = this.$root.$i18n
         }
         this.$i18n = new VueI18n(options.i18n)
@@ -61,7 +61,7 @@ export default {
           warn(`Cannot be interpreted 'i18n' option.`)
         }
       }
-    } else if (this.$root && this.$root.$i18n && typeName(this.$root.$i18n) === 'VueI18n') {
+    } else if (this.$root && this.$root.$i18n && this.$root.$i18n instanceof VueI18n) {
       // root i18n
       this.$i18n = this.$root.$i18n
     }
 
@@ -42,27 +42,6 @@ export function isPlainObject (obj: any): boolean {
   return toString.call(obj) === OBJECT_STRING
 }
 
-function funcName (f: Function): string {
-  if (f.name) { return f.name }
-  const match = /^\s*function\s*([^\(]*)/im.exec(f.toString())
-  return match ? match[1] : ''
-}
-
-function ctorName (obj: any): string {
-  const str = toString.call(obj).slice(8, -1)
-  if ((str === 'Object' || str === 'Error') && obj.constructor) {
-    return funcName(obj.constructor)
-  }
-  return str
-}
-
-export function typeName (val: mixed): string {
-  if (val === null) { return 'null' }
-  const type: string = typeof val
-  if (type === 'object') { return ctorName(val) }
-  return type
-}
-
 export function isNull (val: mixed): boolean {
   return val === null || val === undefined
 }