const commandLineArgs = require('command-line-args')
const optionDefinitions = [
  { name: 'dev', type: Boolean, defaultValue: true },
  { name: 'no-dev', type: Boolean }
]
const options = commandLineArgs(optionDefinitions)
const dev = options.dev && !options['no-dev']
console.log(`dev: ${dev}`)

const commandLineArgs = require('command-line-args')
const optionDefinitions = [
  {
    name: 'dev',
    type: Boolean,
    defaultValue: true,
    description: 'Set to enable dev mode. If already enabled, set --no-dev to disable.'
  },
  { name: 'no-dev', type: Boolean },
  {
    name: 'help',
    type: Boolean,
    description: 'Display a usage guide.'
  }
]
const options = commandLineArgs(optionDefinitions)
const dev = options.dev && !options['no-dev']
if (options.help) {
  const commandLineUsage = require('command-line-usage')
  const usage = commandLineUsage([
    {
      header: 'Options',
      optionList: optionDefinitions,
      hide: ['no-dev']
    }
  ])
  console.log(usage)
}