juliangruber/build.js

## build.js
console.log('BUILD env=%s', process.env.NODE_ENV)

## package.json
{
  "scripts": {
    "dev": "NODE_ENV=dev npm start",
    "start": "npm run build && node start.js",
    "build": "node build.js"
  }
}

## start.js
console.log('START env=%s', process.env.NODE_ENV)
	{
	"scripts": {
	"dev": "NODE_ENV=dev npm start",
	"start": "npm run build && node start.js",
	"build": "node build.js"
	}
	}