refactor: reduce complexity

src/disqus.js

@@ -374,9 +374,8 @@
              */
             let parseCommentData = (data) => {
                 let topLevelComments = [],
-                    childComments = [];
-
-                let commentJSON = (comment) => {
+                    childComments = [],
+                    commentJSON = (comment) => {
                         return {
                             comment,
                             author: comment.author.name,
@@ -384,7 +383,7 @@
                             isPrimary: (disqusjs.config.admin ? (comment.author.username === disqusjs.config.admin) : false),
                             children: getChildren(+comment.id)
                         }
-                }
+                    };
 
                 let getChildren = (id) => {
                     // 如果没有子评论，就不需要解析子评论了
@@ -399,11 +398,7 @@
                         }
                     }
 
-                    if (list.length) {
-                        return list;
-                    } else {
-                        return null;
-                    }
+                    return (list.length) ? list : null
                 }
 
                 data.forEach((comment) => {