Dotenv-expand adds variable expansion on top of dotenv. If you find yourself needing to expand environment variables already existing on your machine, then dotenv-expand is your tool.

Install

npm install dotenv --save
npm install dotenv-expand --save

Usage

As early as possible in your application, require dotenv and dotenv-expand, and wrap dotenv-expand around dotenv.

var dotenv = require('dotenv')
var dotenvExpand = require('dotenv-expand')

var myEnv = dotenv.config()
dotenvExpand(myEnv)

See test/.env for examples of variable expansion in your .env file.