#!/usr/bin/env node const yargs = require('yargs'); const { hideBin } = require('yargs/helpers'); yargs(hideBin(process.argv)) .scriptName('calc') .usage('0ドル <cmd> [args]') .command( 'add <numbers..>', 'Add numbers', (yargs) => { yargs.positional('numbers', { type: 'number', description: 'Numbers to add', }); }, (argv) => { const result = argv.numbers.reduce((sum, n) => sum + n, 0); console.log(re