feat: Show files in one line if -1 option is not used

Author: AFatmaa

implement-shell-tools/ls/ls.js

@@ -18,7 +18,11 @@ const files = await fs.readdir(directory);
 
 const visibleFiles = options.a ? files : files.filter(file => !file.startsWith("."));
 
-for (const file of visibleFiles) {
-  console.log(file);
+if (options["1"]) {
+  for (const file of visibleFiles) {
+    console.log(file);
+  }
+} else {
+  console.log(visibleFiles.join("       "));
 }