Pull request Compare This branch is 94 commits behind canary.


Deploy to now

With universal configuration

How to use

Using create-next-app

Execute create-next-app with Yarn or npx to bootstrap the example:

npx create-next-app --example with-universal-configuration with-universal-configuration-app
# or
yarn create next-app --example with-universal-configuration with-universal-configuration-app

Download manually

Download the example or clone the repo:

curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/with-universal-configuration
cd with-universal-configuration

Install it and run:

npm install
npm run dev
# or
yarn dev

Deploy it to the cloud with now (download)


The idea behind the example

This example show how to set custom environment variables for your application based on NODE_ENV using transform-define.


  • Because a babel plugin is used the output is cached in node_modules/.cache by babel-loader. When modifying the configuration you will have to manually clear this cache to make changes visible. Alternately, you may skip caching for babel-loader as shown here.
  • This example sets the environment configuration at build time, meaning the same build might not be used in e.g. both staging and production. For a solution which sets the environment at runtime, see here.