Konfig : Node.js Config Loader

https://github.com/vngrs/konfig

Konfig is a config loader module which allows you to load json and yaml files automatically by environment in node.js applications. You can also define dynamic values which can be used especially for dynamic environment variables on Heroku like services.

Example config file:

default:
    port: 3000
    cache_assets: true
    secret_key: 7EHDWHD9W9UW9FBFB949394BWYFG8WE78F

development:
    cache_assets: false

test:
    port: 3001

staging:
    <<: *production

production: &production
    port: #{process.env.PORT}
    secret_key: 3F8RRJR30UHERGUH8UERHGIUERHG3987GH8