node-optimist /

node-optimist

optimist is a node.js library for option parsing for people who hate option parsing. More specifically, this module is for people who like all the --bells and -whistlz of program usage but think optstrings are a waste of time.

With optimist, option parsing doesn't have to suck (as much).

var argv = require('optimist').argv;



if (argv.rif - 5 * argv.xup > 7.138) {

    console.log('Buy more riffiwobbles');

}

else {

    console.log('Sell the xupptumblers');

}

$ ./xup.js --rif=55 --xup=9.52

Buy more riffiwobbles



$ ./xup.js --rif 12 --xup 8.1

Sell the xupptumblers

And non-hypenated options too! Just use argv._!

var argv = require('optimist').argv;

console.log('(%d,%d)', argv.x, argv.y);

console.log(argv._);

$ ./nonopt.js -x 6.82 -y 3.35 moo

(6.82,3.35)

[ 'moo' ]



$ ./nonopt.js foo -x 0.54 bar -y 1.12 baz

(0.54,1.12)

[ 'foo', 'bar', 'baz' ]

example: https://github.com/substack/node-browserify/blob/master/bin/cli.js

var argv = require('optimist').usage('Usage: $0 [entry files] {OPTIONS}').wrap(80).option('outfile', {

    alias: 'o',

    desc: 'Write the browserify bundle to this file.\n' + 'If unspecified, browserify prints to stdout.',

}).option('require', {

    alias: 'r',

    desc: 'A module name or file to bundle.require()\n' + 'Optionally use a colon separator to set the target.',

}).option('entry', {

    alias: 'e',

    desc: 'An entry point of your app'

}).option('alias', {

    alias: 'a',

    desc: 'Register an alias with a colon separator: "to:from"\n' + "Example: --alias 'jquery:jquery-browserify'",

}).option('plugin', {

    alias: 'p',

    desc: 'Use a plugin. Use a colon separator to specify additional ' + 'plugin arguments as a JSON string.\n' + 'Example: --plugin \'fileify:["files","."]\''

}).option('help', {

    alias: 'h',

    desc: 'Show this message'

}).check(function (argv) {

    if (argv.help) throw ''

    if (process.argv.length <= 2) throw 'Specify a parameter.'

}).argv;