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Yargs be a node.js library fer hearties tryin' ter parse optstrings.
Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. It gives you:
my-program.js serve --port=5000).bash
npm i yargs --save
````javascript
const argv = require('yargs').argv
if (argv.ships > 3 && argv.distance < 53.5) { console.log('Plunder more riffiwobbles!') } else { console.log('Retreat from the xupptumblers!') } ````
```bash $ ./plunder.js --ships=4 --distance=22 Plunder more riffiwobbles!
$ ./plunder.js --ships 12 --distance 98.7 Retreat from the xupptumblers! ```
```js
require('yargs') // eslint-disable-line
.command('serve [port]', 'start the server', (yargs) => {
yargs
.positional('port', {
describe: 'port to bind on',
default: 5000
})
}, (argv) => {
if (argv.verbose) console.info(start server on :${argv.port})
serve(argv.port)
})
.option('verbose', {
alias: 'v',
default: false
})
.argv
```
Run the example above with --help to see the help for the application.
