Solution 1: dotenv
Setup dotenv.
Edit env.development.
BUILD_DIR=.nuxt-devEdit env.production.
BUILD_DIR=.nuxtEdit nuxt.config.js.
export default { ... buildDir: process.env.BUILD_DIR, ...}Solution 2: process.env.NODE_ENV
export default { ... buildDir: process.env.NODE_ENV == 'production' ? '.nuxt' : '.nuxt-dev', ...}NOTE: When npm run dev is run, process.env.NODE_ENV == 'development'. When npm run build is run, process.env.NODE_ENV == 'production'
Solution 3: custom environment variables
export default { ... buildDir: process.env.BUILD_DIR ...}Edit package.json
{ ... "scripts": { "dev": "env BUILD_DIR=.nuxt-dev nuxt", "build": "env BUILD_DIR=.nuxt nuxt build", ... } ...}NOTE: If you are using dotenv with the same environment variable specified, dotenv will overwrite the environment variable.