bin-cli.js

#!/usr/bin/env node
'use strict'

require('yargs')
  .command('hello <name>', 'say hello to <name>', {}, yargs => {
    console.log(`hello, ${yargs.name}!`)
  })
  .demandCommand(1)
  .help()
  .argv

package.json

{
  "bin": {
    "hello": "bin/hello.js"
  },
  "scripts": {
    "lint": "eslint *.js **/*.js | snazzy"
  },
  "eslintConfig": {
    "extends": "standard",
    "overrides": [
      {
        "files": ["bin/*.js"],
        "rules": {
          "no-unused-expressions": 0
        }
      }
    ]
  },
  "devDependencies": {
    "eslint": "^4",
    "eslint-config-standard": "^10",
    "eslint-plugin-import": "^2",
    "eslint-plugin-node": "^5",
    "eslint-plugin-promise": "^3",
    "eslint-plugin-standard": "^3",
    "snazzy": "^7"
  },
  "dependencies": {
    "yargs": "^8"
  }
}