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