diff --git "a/docs/\343\200\212\351\233\205\346\200\235\350\200\203\350\257\225\345\256\230\346\226\271\346\214\207\345\215\227\343\200\213\357\274\210\347\254\2542\347\211\210\357\274\211tree.md" "b/docs/\343\200\212\351\233\205\346\200\235\350\200\203\350\257\225\345\256\230\346\226\271\346\214\207\345\215\227\343\200\213\357\274\210\347\254\2542\347\211\210\357\274\211tree.md"
index d73a340..d93d345 100644
--- "a/docs/\343\200\212\351\233\205\346\200\235\350\200\203\350\257\225\345\256\230\346\226\271\346\214\207\345\215\227\343\200\213\357\274\210\347\254\2542\347\211\210\357\274\211tree.md"
+++ "b/docs/\343\200\212\351\233\205\346\200\235\350\200\203\350\257\225\345\256\230\346\226\271\346\214\207\345\215\227\343\200\213\357\274\210\347\254\2542\347\211\210\357\274\211tree.md"
@@ -1,14 +1,10 @@
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%9B%BE%E4%B9%A6%E4%BB%8B%E7%BB%8D.mp4" target="_blank">《雅思考试官方指南》（第2版）/图书介绍.mp4</a><br />
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 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E3%80%8A%E9%9B%85%E6%80%9D%E6%89%8B%E5%86%8C%E3%80%8B%E7%9B%B8%E5%85%B3%E8%A7%86%E9%A2%91%2F%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E6%9C%BA%E8%80%83%E5%90%AC%E5%8A%9B%E9%83%A8%E5%88%86%E6%93%8D%E4%BD%9C%E6%8C%87%E5%8D%97.mp4" target="_blank">《雅思考试官方指南》（第2版）/《雅思手册》相关视频/雅思考试机考听力部分操作指南.mp4</a><br />
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-<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%86%99%E4%BD%9CTask%202%E7%AD%94%E9%A2%98%E5%AE%9E%E4%BE%8B%2F05%20Comments%20on%20Writing%20Samples.pdf" target="_blank">《雅思考试官方指南》（第2版）/写作Task 2答题实例/05 Comments on Writing Samples.pdf</a><br />
-<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%8F%A3%E8%AF%AD%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F01%20IELTS%20Speaking%20Sample%20-%20Part%201.mp3" target="_blank">《雅思考试官方指南》（第2版）/口语练习音频/01 IELTS Speaking Sample - Part 1.mp3</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E3%80%8A%E9%9B%85%E6%80%9D%E6%89%8B%E5%86%8C%E3%80%8B%E7%9B%B8%E5%85%B3%E8%A7%86%E9%A2%91%2F%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E6%9C%BA%E8%80%83%E5%86%99%E4%BD%9C%E9%83%A8%E5%88%86%E6%93%8D%E4%BD%9C%E6%8C%87%E5%8D%97.mp4" target="_blank">《雅思考试官方指南》（第2版）/《雅思手册》相关视频/雅思考试机考写作部分操作指南.mp4</a><br />
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E3%80%8A%E9%9B%85%E6%80%9D%E6%89%8B%E5%86%8C%E3%80%8B%E7%9B%B8%E5%85%B3%E8%A7%86%E9%A2%91%2F%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E6%9C%BA%E8%80%83%E9%98%85%E8%AF%BB%E9%83%A8%E5%88%86%E6%93%8D%E4%BD%9C%E6%8C%87%E5%8D%97.mp4" target="_blank">《雅思考试官方指南》（第2版）/《雅思手册》相关视频/雅思考试机考阅读部分操作指南.mp4</a><br />
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-<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%8F%A3%E8%AF%AD%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F03%20IELTS%20Speaking%20Sample%20-%20Part%203.mp3" target="_blank">《雅思考试官方指南》（第2版）/口语练习音频/03 IELTS Speaking Sample - Part 3.mp3</a><br />
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%8F%A3%E8%AF%AD%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F02%20IELTS%20Speaking%20Sample%20-%20Part%202.mp3" target="_blank">《雅思考试官方指南》（第2版）/口语练习音频/02 IELTS Speaking Sample - Part 2.mp3</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%8F%A3%E8%AF%AD%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F03%20IELTS%20Speaking%20Sample%20-%20Part%203.mp3" target="_blank">《雅思考试官方指南》（第2版）/口语练习音频/03 IELTS Speaking Sample - Part 3.mp3</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%8F%A3%E8%AF%AD%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F04%20IELTS%20Speaking%20Sample%20-%20Full.mp3" target="_blank">《雅思考试官方指南》（第2版）/口语练习音频/04 IELTS Speaking Sample - Full.mp3</a><br />
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%90%AC%E5%8A%9B%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F01%20Letters%20of%20the%20Alphabet.mp3" target="_blank">《雅思考试官方指南》（第2版）/听力练习音频/01 Letters of the Alphabet.mp3</a><br />
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 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%90%AC%E5%8A%9B%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F03%20Spelling.mp3" target="_blank">《雅思考试官方指南》（第2版）/听力练习音频/03 Spelling.mp3</a><br />
@@ -17,33 +13,37 @@
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%90%AC%E5%8A%9B%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F06%20Test%20Practice%20-%20Section%201.mp3" target="_blank">《雅思考试官方指南》（第2版）/听力练习音频/06 Test Practice - Section 1.mp3</a><br />
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 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%90%AC%E5%8A%9B%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F08%20Multiple%20Choice.mp3" target="_blank">《雅思考试官方指南》（第2版）/听力练习音频/08 Multiple Choice.mp3</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%8F%A3%E8%AF%AD%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F01%20IELTS%20Speaking%20Sample%20-%20Part%201.mp3" target="_blank">《雅思考试官方指南》（第2版）/口语练习音频/01 IELTS Speaking Sample - Part 1.mp3</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E3%80%8A%E9%9B%85%E6%80%9D%E6%89%8B%E5%86%8C%E3%80%8B%E7%9B%B8%E5%85%B3%E8%A7%86%E9%A2%91%2F%E9%9B%85%E6%80%9D%E8%A7%86%E9%A2%91%E9%80%9A%E8%AF%9D%E5%8F%A3%E8%AF%AD%E8%80%83%E8%AF%95%E6%B5%81%E7%A8%8B.mp4" target="_blank">《雅思考试官方指南》（第2版）/《雅思手册》相关视频/雅思视频通话口语考试流程.mp4</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E3%80%8A%E9%9B%85%E6%80%9D%E6%89%8B%E5%86%8C%E3%80%8B%E7%9B%B8%E5%85%B3%E8%A7%86%E9%A2%91%2F%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E6%9C%BA%E8%80%83%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%AE%80%E4%BB%8B.mp4" target="_blank">《雅思考试官方指南》（第2版）/《雅思手册》相关视频/雅思考试机考操作系统简介.mp4</a><br />
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%90%AC%E5%8A%9B%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F09%20Test%20Practice%20-%20Section%202.mp3" target="_blank">《雅思考试官方指南》（第2版）/听力练习音频/09 Test Practice - Section 2.mp3</a><br />
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 <a href="https://www.bilibili.com/video/BV1hVeueRE42/" target="_blank">《雅思考试官方指南》（第2版）/视频：口语考试实况录像/04 Speaking Sample 4.mp4</a><br />
+<a href="https://www.bilibili.com/video/BV1PbeueyEuE/" target="_blank">《雅思考试官方指南》（第2版）/视频：口语考试实况录像/03 Speaking Sample 3.mp4</a><br />
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E8%A7%86%E9%A2%91%EF%BC%9A%E5%8F%A3%E8%AF%AD%E8%80%83%E8%AF%95%E5%AE%9E%E5%86%B5%E5%BD%95%E5%83%8F%2F05%20Comments%20on%20Speaking%20Samples.pdf" target="_blank">《雅思考试官方指南》（第2版）/视频：口语考试实况录像/05 Comments on Speaking Samples.pdf</a><br />
 <a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E8%A7%86%E9%A2%91%EF%BC%9A%E9%9B%85%E6%80%9D%E5%86%99%E4%BD%9C%E6%8C%87%E5%AF%BC%2F07%20Video%20-%20POWER%20Writing.mp4" target="_blank">《雅思考试官方指南》（第2版）/视频：雅思写作指导/07 Video - POWER Writing.mp4</a><br />
-<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E8%A7%86%E9%A2%91%EF%BC%9AIELTS%E8%AF%84%E5%88%86%E6%A0%87%E5%87%86%2F03%20Writing%20Band%20Descriptor%201%20-%20Task%20Response.mp4" target="_blank">《雅思考试官方指南》（第2版）/视频：IELTS评分标准/03 Writing Band Descriptor 1 - Task Response.mp4</a><br />
-<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E5%90%AC%E5%8A%9B%E7%BB%83%E4%B9%A0%E9%9F%B3%E9%A2%91%2F11%20Map%202.mp3" target="_blank">《雅思考试官方指南》（第2版）/听力练习音频/11 Map 2.mp3</a><br />
-<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E8%A7%86%E9%A2%91%EF%BC%9AIELTS%E8%AF%84%E5%88%86%E6%A0%87%E5%87%86%2F01%20Listening%20Band%20Descriptor.mp4" target="_blank">《雅思考试官方指南》（第2版）/视频：IELTS评分标准/01 Listening Band Descriptor.mp4</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E6%A8%A1%E6%8B%9F%E8%AF%95%E9%A2%98%E5%90%AC%E5%8A%9B%E5%BD%95%E9%9F%B3%2F03%20Academic%20Test%203.mp3" target="_blank">《雅思考试官方指南》（第2版）/模拟试题听力录音/03 Academic Test 3.mp3</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E6%A8%A1%E6%8B%9F%E8%AF%95%E9%A2%98%E5%90%AC%E5%8A%9B%E5%BD%95%E9%9F%B3%2F04%20Academic%20Test%204.mp3" target="_blank">《雅思考试官方指南》（第2版）/模拟试题听力录音/04 Academic Test 4.mp3</a><br />
+<a href="https://ielts-guide-2nd.xgqfrms.xyz/%E3%80%8A%E9%9B%85%E6%80%9D%E8%80%83%E8%AF%95%E5%AE%98%E6%96%B9%E6%8C%87%E5%8D%97%E3%80%8B%EF%BC%88%E7%AC%AC2%E7%89%88%EF%BC%89%2F%E8%A7%86%E9%A2%91%EF%BC%9AIELTS%E8%AF%84%E5%88%86%E6%A0%87%E5%87%86%2F10%20Speaking%20Band%20Descriptor%204%20-%20Pronunciation.mp4" target="_blank">《雅思考试官方指南》（第2版）/视频：IELTS评分标准/10 Speaking Band Descriptor 4 - Pronunciation.mp4</a><br />
diff --git a/server.js b/server.js
index fa954fb..6f523ba 100644
--- a/server.js
+++ b/server.js
@@ -1,4 +1,3 @@
-// import fs, {stat} from 'node:fs';
 import fs from 'node:fs';
 import path from 'node:path';
 
@@ -7,73 +6,27 @@ const rootFolder = '/Users/xgqfrms-mm/Documents/github/IELTS-Guide-2th/docs/《
 try {
   let treeFilePath = rootFolder + `tree.md`;
   if (!fs.existsSync(treeFilePath)) {
-    fs.writeFileSync(treeFilePath, ``, err => {
-      // init
-    });
-  } else {
-    fs.writeFileSync(treeFilePath, ``, err => {
-      // clear
-    });
+    // do nothing
   }
-  // await fs.appendFile(rootFolder + `tree.md`, content);
-  // fs.writeFile(rootFolder + `tree.md`, content, err => {
-  //   if (err) {
-  //     console.error(err);
-  //   } else {
-  //     // file written successfully
-  //   }
-  // });
+  fs.writeFileSync(treeFilePath, ``, err => {
+    // init & clear
+  });
 } catch (err) {
   console.error(err);
 }
 
-
-// const isFile = fileName => {
-//   return fs.lstatSync(fileName).isFile() || false;
-// };
-// const isFolder = fileName => {
-//   return fs.lstatSync(fileName).isDirectory() || false;
-// };
-
-const results = [];
-
-const treeGenerator = async (results = [], folderName = rootFolder) => {
-  // 读取文件夹
-  console.log(`🚀 folderName =`, folderName);
+const treeFlatRecursiveTraversal = async (folderName = rootFolder) => {
+  // console.log(`🚀 folderName =`, folderName);
   await fs.readdirSync(folderName).map(fileName => {
     // console.log(`❓ fileName =`, fileName);
-    // path
     const pathName = path.join(folderName, fileName);
-    // stat(pathName, (err, stats) => {
     fs.stat(pathName, async (err, stats) => {
       // console.log(stats);
-      // Stats {
-      //   dev: 16777220,
-      //   mode: 16877,
-      //   nlink: 12,
-      //   uid: 501,
-      //   gid: 20,
-      //   rdev: 0,
-      //   blksize: 4096,
-      //   ino: 64334171,
-      //   size: 384,
-      //   blocks: 0,
-      //   atimeMs: 1723572008018.5503,
-      //   mtimeMs: 1723572008013.725,
-      //   ctimeMs: 1723572008013.725,
-      //   birthtimeMs: 1723570190954.7646,
-      //   atime: 2024-08-13T18:00:08.019Z,
-      //   mtime: 2024-08-13T18:00:08.014Z,
-      //   ctime: 2024-08-13T18:00:08.014Z,
-      //   birthtime: 2024-08-13T17:29:50.955Z
-      // }
-      // console.log(stats.isDirectory());
       if(stats.isDirectory()) {
         // console.log(`🗂️ folderName =`, fileName);
-        await treeGenerator(results, pathName)
+        await treeFlatRecursiveTraversal(pathName)
       } else {
         // console.log(`📂 fileName =`, fileName)
-        // const relativePath = encodeURIComponent(pathName.replace(`/Users/xgqfrms-mm/Documents/github/IELTS-Guide-2th/docs/`, ``));
         const relativePath = pathName.replace(`/Users/xgqfrms-mm/Documents/github/IELTS-Guide-2th/docs/`, ``);
         let url = `https://ielts-guide-2nd.xgqfrms.xyz/${encodeURIComponent(relativePath)}`;
         switch (relativePath) {
@@ -89,62 +42,22 @@ const treeGenerator = async (results = [], folderName = rootFolder) => {
           case `《雅思考试官方指南》（第2版）/视频：口语考试实况录像/04 Speaking Sample 4.mp4`:
             url = `https://www.bilibili.com/video/BV1hVeueRE42/`;
             break;
-          // default:
-          //   break;
+          default:
+            // do nothing
+            break;
         }
         const aLink = `<a href="${url}" target="_blank">${relativePath}</a><br />\n`;
-        //
         await fs.appendFile(rootFolder + `tree.md`, aLink, err => {
-          //
+          err && console.log(`err =`, err)
         });
-        // await fs.appendFile(rootFolder + `tree.md`, pathName + `\n`, err => {
-        //   //
-        // });
-        results.push(pathName);
       }
     });
-    // if(isFolder(fileName)) {
-    //   console.log(`🗂️ folderName =`, fileName)
-    // } else {
-    //   console.log(`📂 fileName =`, fileName)
-    // }
-    // if(isFile(fileName)) {
-    //   console.log(`📂 fileName =`, fileName)
-    // } else {
-    //   console.log(`🗂️ folderName =`, fileName)
-    // }
-    // let temp = path.join(folderPath, fileName);
   });
 }
 
 try {
-  await treeGenerator(results, rootFolder);
-  // console.log(`results =`, results);
+  await treeFlatRecursiveTraversal(rootFolder);
+  console.log(`treeFlatRecursiveTraversal ✅`)
 } catch (err) {
   console.error(`error ❌ =`, err);
 }
-
-
-
-
-
-
-
-/*
-
-https://nodejs.org/api/fs.html#fslstatsyncpath-options
-
-http://man7.org/linux/man-pages/man2/lstat.2.html
-
-stat, fstat, lstat, fstatat (get file status)
-
-
-
-https://nodejs.org/api/fs.html#fsstatpath-options-callback
-
-
-// __dirname
-
-https://stackoverflow.com/questions/46745014/alternative-for-dirname-in-node-js-when-using-es6-modules
-
-*/