nuxt/bin/nuxt-build

#!/usr/bin/env node

// Show logs
process.env.DEBUG = 'nuxt:*'

var fs = require('fs')
var Nuxt = require('../')
var resolve = require('path').resolve

var rootDir = resolve(process.argv.slice(2)[0] || '.')
var nuxtConfigFile = resolve(rootDir, 'nuxt.config.js')

var options = {}
if (fs.existsSync(nuxtConfigFile)) {
  options = require(nuxtConfigFile)
}
if (typeof options.rootDir !== 'string') {
  options.rootDir = rootDir
}
options.dev = false // Create production build when calling `nuxt build`

console.log('[nuxt] Building...') // eslint-disable-line no-console
var nuxt = new Nuxt(options)
nuxt.build()
.then(() => {
  console.log('[nuxt] Building done') // eslint-disable-line no-console
})
.catch((err) => {
  console.error(err) // eslint-disable-line no-console
  process.exit(1)
})