[ 原始碼： node-defaults ]
套件：node-defaults（1.0.3-2）
merge single level defaults over a config object
A simple one level options merge utility. This module exports a function that takes 2 arguments: options and defaults. When called, it overrides all of undefined properties in options with the clones of properties defined in defaults. Sidecases: if called with a falsy options value, options will be initialized to a new object before being merged onto.
Node.js is an event-based server-side JavaScript engine.