[ 源代码： node-config ]
软件包：node-config（3.3.10-1）
configuration control for production Node deployments
Node-config organizes hierarchical configurations for application deployments.
It allows defining a set of default parameters, and extend them for different deployment environments (development, qa, staging, production, etc.).
Configurations are stored in configuration files within an application, and can be overridden and extended by environment variables, command line parameters, or external sources.