Solution: lb_ls

Here is the commented solution for this project.

Set up the project

Create a file named lb_ls.js.

$ touch lb_ls.js

Implement the command-line parser

The objective of this part is to implement a parser for command-line flags and positional arguments.

Import the parseArgs() function exported by the core Node.js node:util module

const { parseArgs } = require('node:util');

Use the parseArgs() function to define the -r (short for --reverse), -A (short for --all), and -R (short for --recursive) boolean command-line flags and allow for positional arguments.

const { parseArgs } = require('node:util');const { values, positionals } = parseArgs({  options: {    'reverse': {      type: 'boolean',