API: The dev Property

  • Type: Boolean
  • Default: true

Define the development or production mode of Nuxt.js.

This property is overwritten by nuxt commands:

  • dev is forced to true with nuxt
  • dev is forced to false with nuxt build, nuxt start, nuxt export and nuxt generate

This property should be used when using Nuxt.js programmatically:



export default {
  dev: (process.env.NODE_ENV !== 'production')


const { Nuxt, Builder } = require('nuxt')
const app = require('express')()
const port = process.env.PORT || 3000

// We instantiate Nuxt.js with the options
const config = require('./nuxt.config.js')
const nuxt = new Nuxt(config)

// Build only in dev mode
if (config.dev) {
  new Builder(nuxt).build()

// Listen the server
app.listen(port, '').then(() => {
  console.log(`Server is listening on port: ${port}`)

Then in your package.json:

  "scripts": {
    "dev": "node server.js",
    "build": "nuxt build",
    "start": "NODE_ENV=production node server.js"

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