fix: 完成dayjs国际化

src/App.js

       total: 0,
       // 是否没有更多评论了
       isNoMoreComment: false,
-      initDone: false
+      initDone: false,
+      locale: "zh-CN"
     };
     this.handleChangeLoading = this.handleChangeLoading.bind(this);
     this.sCreateComment = this.sCreateComment.bind(this);
         }
       })
       .then(() => {
-        this.setState({ initDone: true });
+        this.setState({ initDone: true, locale: currentLocale });
       });
   }
 

src/components/ContentItem/index.js

 // dayjs.locale("zh-cn");
 dayjs.extend(relativeTime);
 
+const LOCALES = {
+  "zh-CN": "zh-cn"
+};
+
 class CommentItem extends Component {
   constructor(props) {
     super(props);
       app
     } = this.props;
 
+    const { locale } = this.props.app;
+    console.log("locale is", locale);
     const { showInput } = this.state;
 
     let newContent = content.content;
                   "YYYY-MM-DD HH:mm:ss"
                 )}
               >
-                {dayjs(content.created * 1000).fromNow()}
-                {/* {dayjs(content.created * 1000).locale('zh-cn').fromNow()} */}
+                {LOCALES[locale]
+                  ? dayjs(content.created * 1000)
+                      .locale(LOCALES[locale])
+                      .fromNow()
+                  : dayjs(content.created * 1000).fromNow()}
               </Tooltip>
             </span>
           </div>