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#!/usr/bin/env nodevar argv = require('yargs/yargs')(process.argv.slice(2))    .count('verbose')    .alias('v', 'verbose')    .argv;
VERBOSE_LEVEL = argv.verbose;
function WARN()  { VERBOSE_LEVEL >= 0 && console.log.apply(console, arguments); }function INFO()  { VERBOSE_LEVEL >= 1 && console.log.apply(console, arguments); }function DEBUG() { VERBOSE_LEVEL >= 2 && console.log.apply(console, arguments); }
WARN("Showing only important stuff");INFO("Showing semi-important stuff too");DEBUG("Extra chatty mode");