async cli app boilerplate

index.js

#!/usr/bin/env node
if (process.mainModule === module) setImmediate(() => main(process.argv).catch(e => console.log(e.stack) && process.exit(1)))

async function main(argv) {
  console.log(argv.slice(2))
}

package.json

{"name":"boilerplate", "version":"0.0.0", "bin": "index.js"}