refactor(locale): isolate datefns locale file

src/Time/src/main.js

@@ -1,8 +1,6 @@
 import format from 'date-fns/format'
 import formatDistance from 'date-fns/formatDistance'
 import fromUnixTime from 'date-fns/fromUnixTime'
-import zhCN from 'date-fns/locale/zh-CN'
-import enUS from 'date-fns/locale/en-US'
 import render from '../../_utils/vue/render'
 
 import locale from '../../_mixins/locale'
@@ -41,12 +39,6 @@ export default {
     }
   },
   computed: {
-    dateFnsLocale () {
-      return ({
-        'zh-CN': zhCN,
-        'en-US': enUS
-      })[this.locale]
-    },
     dateFnsOptions () {
       return {
         locale: this.dateFnsLocale

src/_mixins/locale.js

@@ -16,6 +16,15 @@ function getTranslationNamespace (locales, fallbackLocale, language, namespace)
   }
 }
 
+function getDateFns (locales, fallbackLocale, language) {
+  const locale = locales[language]
+  if (locale) {
+    return locale._dateFns
+  } else {
+    return fallbackLocale._dateFns
+  }
+}
+
 export default function createLocaleMixin (componentLocaleNamespace) {
   return {
     inject: {
@@ -31,6 +40,17 @@ export default function createLocaleMixin (componentLocaleNamespace) {
           return this.$naive.fallbackLocale
         }
       },
+      dateFnsLocale () {
+        let language = null
+        if (this.NConfigProvider) {
+          language = this.NConfigProvider.inheritedLanguage
+        }
+        return getDateFns(
+          this.$naive.locales,
+          this.$naive.fallbackLocale,
+          language
+        )
+      },
       localeNamespace () {
         return this.tns(componentLocaleNamespace)
       }

src/locale/enUS.js

@@ -1,5 +1,8 @@
+import enUS from 'date-fns/locale/en-US'
+
 export default {
   _name: 'en-US',
+  _dateFns: enUS,
   Popconfirm: {
     positiveText: 'Confirm',
     negativeText: 'Cancel'
@@ -28,6 +31,7 @@ export default {
     Thu: 'Thu',
     Fri: 'Fri',
     Sat: 'Sat',
+    seperator: 'to',
     clear: 'Clear',
     now: 'Now',
     confirm: 'Confirm',

src/locale/zhCN.js

@@ -1,5 +1,8 @@
+import zhCN from 'date-fns/locale/zh-CN'
+
 export default {
   _name: 'zh-CN',
+  _dateFns: zhCN,
   Popconfirm: {
     positiveText: '确认',
     negativeText: '取消'
@@ -28,6 +31,7 @@ export default {
     Thu: '四',
     Fri: '五',
     Sat: '六',
+    seperator: '至',
     clear: '清除',
     now: '此刻',
     confirm: '确认',