Neutrino Environment Middleware

neutrino-middleware-env is Neutrino middleware for injecting environment variable definitions into source code at process.env. You can use this to make a custom environment variable (e.g. an API server backend to use) available inside your project. Always injects process.env.NODE_ENV, unless overridden.

Requirements

• Node.js v6.10+
• Yarn or npm client
• Neutrino v7

Installation

neutrino-middleware-env can be installed via the Yarn or npm clients.

Yarn

❯ yarn add neutrino-middleware-env

npm

❯ npm install --save neutrino-middleware-env

Usage

neutrino-middleware-env can be consumed from the Neutrino API, middleware, or presets. Require this package and plug it into Neutrino:

// Using function middleware format
const env = require('neutrino-middleware-env');
 
// Use with default options
neutrino.use(env);
 
// Usage with additional environment variables
neutrino.use(env, ['SECRET_KEY']);

// Using object or array middleware format
 
// Use with default options
module.exports = {
  use: ['neutrino-middleware-env']
};
 
// Usage with additional environment variables
module.exports = {
  use: [
    ['neutrino-middleware-env', ['SECRET_KEY']]
  ]
};

This middleware optionally accepts an array of environment variables to additionally inject into source code.

Customization

neutrino-middleware-env creates some conventions to make overriding the configuration easier once you are ready to make changes.

Plugins

The following is a list of plugins and their identifiers which can be overridden:

Contributing

This middleware is part of the neutrino-dev repository, a monorepo containing all resources for developing Neutrino and its core presets and middleware. Follow the contributing guide for details.