implementation for ls -1 flag.

Author: SaraTahir28

implement-shell-tools/ls/ls.js

@@ -0,0 +1,23 @@
+import { program } from "commander";
+import { promises as fs } from "node:fs";
+
+//configuring 
+program
+  .name("ls")
+  .description("list directory contents")
+  .option("-1, --one", "Outputs are printed one entry per line")
+  .argument("[directory]", "Directory to list", "."); // "." means current directory
+
+//interpret the program
+program.parse();
+const directory = program.args[0] || "."; //get dir arg- 1st arg in program.args array || if no arg default to current dir
+
+
+const files = await fs.readdir(directory); //read the dir to get array of filenames
+
+
+
+//print each file on its own line
+for (const file of files) { // Loop prints each individually on separate lines
+    console.log(file)
+}