A yargs/commander.js little comparison on how they handle multiple CLI arguments

yargs-commander-compare.js

import yargs from "yargs";
import {hideBin} from "yargs/helpers";
import {inspect} from 'node:util'
import {Command} from "commander";

// Compare yargs and commander.js multiple CLI args array handling
// Run:
//
// node yargs-commander-compare.js --str "a string" --arr "array string 1"
// node yargs-commander-compare.js --str "a string" --str "another string" --arr "array string 1" --arr "array string 2"

{
    console.log('yargs')
    const argv = yargs(hideBin(process.argv))
        .option('str', {type: 'string', array: false})
        .option('arr', {type: 'string', array: true})
        .parse()

    console.log(`args: ${inspect(argv)}`)
}

{
    console.log('commander')
    const program = new Command()
        .option('--str <string>')
        .option('--arr <string...>')

    program.parse(process.argv);
    console.log(`args: ${inspect(program.opts())}`)
}