ls.js

import process from "node:process";
import { promises as fs } from "node:fs";

const args = process.argv.slice(2);

let showAll = false;
let path = ".";


for (const arg of args) {
  if (arg === "-a") {
    showAll = true;
  } else if (arg === "-1") {
    // do nothing: already printing one file per line
    path = arg;
  }
}


const files = await fs.readdir(path);

for (const file of files) {

  if (!showAll && file.startsWith(".")) {
    continue;
  }

  console.log(file);
}

// We already print one file per line because 
// console.log(file) automatically puts each file on its own line.