// a fairly complex CLI defined using the yargs 3.0 API:
var argv = require('yargs/yargs')(process.argv.slice(2))
.usage('Usage: $0 <cmd> [options]') // usage string of application.
.command('install', 'install a package (name@version)') // describe commands available.
.command('publish', 'publish the package inside the current working directory')
.option('f', { // document options.
array: true, // even single values will be wrapped in [].
description: 'an array of files',
default: 'test.js',
alias: 'file'
})
.alias('f', 'fil')
.option('h', {
alias: 'help',
description: 'display help message'
})
.string(['user', 'pass'])
.implies('user', 'pass') // if 'user' is set 'pass' must be set.
.help('help')
.demand('q') // fail if 'q' not provided.
.version('1.0.1', 'version', 'display version information') // the version string.
.alias('version', 'v')
// show examples of application in action.
.example('npm install npm@latest -g', 'install the latest version of npm')
// final message to display when successful.
.epilog('for more information visit https://github.com/chevex/yargs')
// disable showing help on failures, provide a final message
// to display for errors.
.showHelpOnFail(false, 'whoops, something went wrong! run with --help')
.argv;
// the parsed data is stored in argv.
console.log(argv);
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