diff --git a/07_trees/js/01_filesystem_dfs.js b/07_trees/js/01_filesystem_dfs.js
new file mode 100644
index 00000000..76670c5e
--- /dev/null
+++ b/07_trees/js/01_filesystem_dfs.js
@@ -0,0 +1,19 @@
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+
+const __filename = fileURLToPath(import.meta.url);
+const __path = path.dirname(__filename);
+
+function printnames(dir) {
+  for (const file of fs.readdirSync(dir).sort()) {
+    const fullPath = path.join(dir, file);
+    if (fs.statSync(fullPath).isFile()) {
+      console.log(file);
+    } else {
+      printnames(fullPath);
+    }
+  }
+}
+
+printnames(path.join(__path, "pics"));