refactoring

code/tree-logger.js

@@ -15,8 +15,23 @@ const treeLogger = (tree, context) => {
     } else if (context.level === 1) {
         const rootChar = context.isLast ? '└ ' : '├ ';
         console.log(rootChar + tree.name);
-    } else {
+        if (tree.items) {
+            for (let i = 0; i < tree.items.length; ++i) {
+                const subtree = tree.items[i];
+                const lastIndex = tree.items.length - 1;
+                const ctx = new Context(context.level + 1, (i === lastIndex));
 
+                treeLogger(subtree, ctx);
+            }
+        }
+    } else {
+        let print = ''
+        while (--context.level) {
+            print += '|'
+        }
+
+        print += (context.isLast ? '└ ' : '├ ');
+        console.log(print + tree.name);
     }
 };