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You want your script to accept --output and --verbose, so you start writing your own loop over process.argv.
What you'll have at the end
A script that reads named flags with util.parseArgs instead of a hand-rolled process.argv loop
You need
A Node script that already reads its own flags by looping over process.argv by hand, checking each element against a string like --output or --verbose.
Not covered
Building a full help screen or a git-style subcommand structure, which parseArgs does not generate for you and a dedicated CLI framework handles far better.
Load secrets from a .env file without installing anything
if your script also needs a secret like an API key instead of a flag, that recipe covers the .env side of the same command line tool.
Write your first tests with Node's built-in test runner
once the parseArgs version is working, that recipe covers writing an automated test for it instead of re-running it by hand every time.
Checked 25 Aug 2026
Part of the Node.js cookbook