diff --git a/bin/common/utils.js b/bin/common/utils.js
new file mode 100644
index 0000000000..63aa89dd3d
--- /dev/null
+++ b/bin/common/utils.js
@@ -0,0 +1,43 @@
+const { Utils } = require('../..')
+const { resolve } = require('path')
+const { existsSync } = require('fs')
+
+const getRootDir = argv => resolve(argv._[0] || '.')
+const getNuxtConfigFile = argv => resolve(getRootDir(argv), argv['config-file'])
+
+exports.nuxtConfigFile = getNuxtConfigFile
+
+exports.loadNuxtConfig = argv => {
+  const rootDir = getRootDir(argv)
+  const nuxtConfigFile = getNuxtConfigFile(argv)
+
+  let options = {}
+
+  if (existsSync(nuxtConfigFile)) {
+    delete require.cache[nuxtConfigFile]
+    options = require(nuxtConfigFile)
+  } else if (argv['config-file'] !== 'nuxt.config.js') {
+    Utils.fatalError('Could not load config file: ' + argv['config-file'])
+  }
+
+  if (typeof options.rootDir !== 'string') {
+    options.rootDir = rootDir
+  }
+
+  // Nuxt Mode
+  options.mode =
+    (argv['spa'] && 'spa') || (argv['universal'] && 'universal') || options.mode
+
+  return options
+}
+
+exports.getLatestHost = argv => {
+  const port =
+    argv.port || process.env.PORT || process.env.npm_package_config_nuxt_port
+  const host =
+    argv.hostname ||
+    process.env.HOST ||
+    process.env.npm_package_config_nuxt_host
+
+  return { port, host }
+}
diff --git a/bin/nuxt b/bin/nuxt
index a1ddd8b065..cd0ec2590a 100755
--- a/bin/nuxt
+++ b/bin/nuxt
@@ -4,9 +4,10 @@
 process.env.DEBUG = process.env.DEBUG || 'nuxt:*'
 
 const { join } = require('path')
-const { name, engines } = require('../package.json')
 const semver = require('semver')
+
 const { Utils } = require('..')
+const { name, engines } = require('../package.json')
 
 // Global error handler
 process.on('unhandledRejection', _error => {
@@ -14,7 +15,11 @@ process.on('unhandledRejection', _error => {
 })
 
 if (!semver.satisfies(process.version, engines.node)) {
-  Utils.fatalError(`The engine "node" is incompatible with ${name}. Expected version "${engines.node}".`)
+  Utils.fatalError(
+    `The engine "node" is incompatible with ${name}. Expected version "${
+      engines.node
+    }".`
+  )
 }
 
 const defaultCommand = 'dev'
diff --git a/bin/nuxt-build b/bin/nuxt-build
index c171ca1ee0..552d2a463b 100755
--- a/bin/nuxt-build
+++ b/bin/nuxt-build
@@ -1,13 +1,13 @@
 #!/usr/bin/env node
 /* eslint-disable no-console */
 
-const fs = require('fs')
 const parseArgs = require('minimist')
-const { Nuxt, Builder, Generator, Utils } = require('..')
-const resolve = require('path').resolve
 const debug = require('debug')('nuxt:build')
 debug.color = 2 // Force green color
 
+const { Nuxt, Builder, Generator, Utils } = require('..')
+const { loadNuxtConfig } = require('./common/utils')
+
 const argv = parseArgs(process.argv.slice(2), {
   alias: {
     h: 'help',
@@ -39,26 +39,11 @@ if (argv.help) {
   process.exit(0)
 }
 
-const rootDir = resolve(argv._[0] || '.')
-const nuxtConfigFile = resolve(rootDir, argv['config-file'])
-
-var options = {}
-if (fs.existsSync(nuxtConfigFile)) {
-  options = require(nuxtConfigFile)
-} else if (argv['config-file'] !== 'nuxt.config.js') {
-  Utils.fatalError(`Could not load config file`, argv['config-file'])
-}
-if (typeof options.rootDir !== 'string') {
-  options.rootDir = rootDir
-}
+const options = loadNuxtConfig(argv)
 
 // Create production build when calling `nuxt build`
 options.dev = false
 
-// Nuxt Mode
-options.mode =
-  (argv['spa'] && 'spa') || (argv['universal'] && 'universal') || options.mode
-
 // Analyze option
 options.build = options.build || {}
 if (argv.analyze) {
@@ -86,9 +71,7 @@ if (options.mode !== 'spa') {
     .build()
     .then(() => debug('Building done'))
     .then(() => close())
-    .catch(err => {
-      Utils.fatalError(err)
-    })
+    .catch(Utils.fatalError)
 } else {
   // -- Build for SPA app --
   const s = Date.now()
diff --git a/bin/nuxt-dev b/bin/nuxt-dev
index 74f365774e..e71811cbed 100755
--- a/bin/nuxt-dev
+++ b/bin/nuxt-dev
@@ -1,16 +1,19 @@
 #!/usr/bin/env node
 /* eslint-disable no-console */
 
-const _ = require('lodash')
+const defaultsDeep = require('lodash/defaultsDeep')
 const debug = require('debug')('nuxt:build')
 debug.color = 2 // force green color
-const fs = require('fs')
 const parseArgs = require('minimist')
-const { Nuxt, Builder, Utils } = require('..')
 const chokidar = require('chokidar')
-const path = require('path')
-const resolve = path.resolve
-const pkg = require(path.join('..', 'package.json'))
+const { version } = require('../package.json')
+
+const { Nuxt, Builder, Utils } = require('..')
+const {
+  loadNuxtConfig,
+  getLatestHost,
+  nuxtConfigFile
+} = require('./common/utils')
 
 const argv = parseArgs(process.argv.slice(2), {
   alias: {
@@ -30,7 +33,7 @@ const argv = parseArgs(process.argv.slice(2), {
 })
 
 if (argv.version) {
-  console.log(pkg.version)
+  console.log(version)
   process.exit(0)
 }
 
@@ -56,39 +59,33 @@ if (argv.help) {
   process.exit(0)
 }
 
-const rootDir = resolve(argv._[0] || '.')
-const nuxtConfigFile = resolve(rootDir, argv['config-file'])
-
 // Load config once for chokidar
-const nuxtConfig = loadNuxtConfig()
-_.defaultsDeep(nuxtConfig, { watchers: { chokidar: { ignoreInitial: true } } })
+const nuxtConfig = loadNuxtConfig(argv)
+defaultsDeep(nuxtConfig, { watchers: { chokidar: { ignoreInitial: true } } })
 
 // Start dev
 let dev = startDev()
 let needToRestart = false
 
 // Start watching for nuxt.config.js changes
-chokidar.watch(nuxtConfigFile, nuxtConfig.watchers.chokidar).on('all', () => {
-  debug('[nuxt.config.js] changed')
-  needToRestart = true
+chokidar
+  .watch(nuxtConfigFile(argv), nuxtConfig.watchers.chokidar)
+  .on('all', () => {
+    debug('[nuxt.config.js] changed')
+    needToRestart = true
 
-  dev = dev.then(instance => {
-    if (needToRestart === false) return instance
-    needToRestart = false
+    dev = dev.then(instance => {
+      if (needToRestart === false) return instance
+      needToRestart = false
 
-    debug('Rebuilding the app...')
-    return startDev(instance)
+      debug('Rebuilding the app...')
+      return startDev(instance)
+    })
   })
-})
 
 function startDev(oldInstance) {
   // Get latest environment variables
-  const port =
-    argv.port || process.env.PORT || process.env.npm_package_config_nuxt_port
-  const host =
-    argv.hostname ||
-    process.env.HOST ||
-    process.env.npm_package_config_nuxt_host
+  const { port, host } = getLatestHost(argv)
 
   // Error handler
   const onError = (err, instance) => {
@@ -99,7 +96,7 @@ function startDev(oldInstance) {
   // Load options
   let options = {}
   try {
-    options = loadNuxtConfig()
+    options = loadAndAugmentNuxtConfig()
   } catch (err) {
     return onError(err, oldInstance)
   }
@@ -111,9 +108,9 @@ function startDev(oldInstance) {
   try {
     nuxt = new Nuxt(options)
     builder = new Builder(nuxt)
-    instance = { nuxt: nuxt, builder: builder }
+    instance = { nuxt, builder }
   } catch (err) {
-    return onError(err, instance || oldInstance)
+    return onError(err, oldInstance)
   }
 
   return (
@@ -142,26 +139,11 @@ function startDev(oldInstance) {
   )
 }
 
-function loadNuxtConfig() {
-  let options = {}
-
-  if (fs.existsSync(nuxtConfigFile)) {
-    delete require.cache[nuxtConfigFile]
-    options = require(nuxtConfigFile)
-  } else if (argv['config-file'] !== 'nuxt.config.js') {
-    Utils.fatalError('Could not load config file: ' + argv['config-file'])
-  }
-
-  if (typeof options.rootDir !== 'string') {
-    options.rootDir = rootDir
-  }
+function loadAndAugmentNuxtConfig() {
+  const options = loadNuxtConfig(argv)
 
   // Force development mode for add hot reloading and watching changes
   options.dev = true
 
-  // Nuxt Mode
-  options.mode =
-    (argv['spa'] && 'spa') || (argv['universal'] && 'universal') || options.mode
-
   return options
 }
diff --git a/bin/nuxt-generate b/bin/nuxt-generate
index 6c21d1fa36..292731a4fa 100755
--- a/bin/nuxt-generate
+++ b/bin/nuxt-generate
@@ -1,12 +1,11 @@
 #!/usr/bin/env node
 /* eslint-disable no-console */
 
-const fs = require('fs')
 const parseArgs = require('minimist')
 const debug = require('debug')('nuxt:generate')
 
 const { Nuxt, Builder, Generator, Utils } = require('..')
-const resolve = require('path').resolve
+const { loadNuxtConfig } = require('./common/utils')
 
 const argv = parseArgs(process.argv.slice(2), {
   alias: {
@@ -39,24 +38,10 @@ if (argv.help) {
   process.exit(0)
 }
 
-const rootDir = resolve(argv._[0] || '.')
-const nuxtConfigFile = resolve(rootDir, argv['config-file'])
+const options = loadNuxtConfig(argv)
 
-var options = {}
-if (fs.existsSync(nuxtConfigFile)) {
-  options = require(nuxtConfigFile)
-} else if (argv['config-file'] !== 'nuxt.config.js') {
-  Utils.fatalError('Could not load config file: ' + argv['config-file'])
-}
-if (typeof options.rootDir !== 'string') {
-  options.rootDir = rootDir
-}
 options.dev = false // Force production mode (no webpack middleware called)
 
-// Nuxt Mode
-options.mode =
-  (argv['spa'] && 'spa') || (argv['universal'] && 'universal') || options.mode
-
 debug('Generating...')
 const nuxt = new Nuxt(options)
 const builder = new Builder(nuxt)
@@ -97,6 +82,4 @@ generator
     debug('Generate done')
     process.exit(0)
   })
-  .catch(err => {
-    Utils.fatalError(err)
-  })
+  .catch(Utils.fatalError)
diff --git a/bin/nuxt-start b/bin/nuxt-start
index 50fd50bf46..7033e1711f 100755
--- a/bin/nuxt-start
+++ b/bin/nuxt-start
@@ -3,9 +3,11 @@
 
 const fs = require('fs')
 const parseArgs = require('minimist')
-const { Nuxt, Utils } = require('..')
 const { resolve } = require('path')
 
+const { Nuxt, Utils } = require('..')
+const { loadNuxtConfig, getLatestHost } = require('./common/utils')
+
 const argv = parseArgs(process.argv.slice(2), {
   alias: {
     h: 'help',
@@ -44,28 +46,11 @@ if (argv.help) {
   process.exit(0)
 }
 
-const rootDir = resolve(argv._[0] || '.')
-const nuxtConfigFile = resolve(rootDir, argv['config-file'])
-
-let options = {}
-
-if (fs.existsSync(nuxtConfigFile)) {
-  options = require(nuxtConfigFile)
-} else if (argv['config-file'] !== 'nuxt.config.js') {
-  Utils.fatalError('Could not load config file: ' + argv['config-file'])
-}
-
-if (typeof options.rootDir !== 'string') {
-  options.rootDir = rootDir
-}
+const options = loadNuxtConfig(argv)
 
 // Force production mode (no webpack middleware called)
 options.dev = false
 
-// Nuxt Mode
-options.mode =
-  (argv['spa'] && 'spa') || (argv['universal'] && 'universal') || options.mode
-
 const nuxt = new Nuxt(options)
 
 // Setup hooks
@@ -93,9 +78,6 @@ if (nuxt.options.render.ssr === true) {
   }
 }
 
-const port =
-  argv.port || process.env.PORT || process.env.npm_package_config_nuxt_port
-const host =
-  argv.hostname || process.env.HOST || process.env.npm_package_config_nuxt_host
+const { port, host } = getLatestHost(argv)
 
 nuxt.listen(port, host)