xtend is a basic utility library which allows you to extend an object by appending all of the properties from each object in a list. When there are identical properties, the right-most property takes precedence.
Examples
var extend =require("xtend")// extend returns a new object. Does not mutate argumentsvar combination =extend({ a:"a", b:"c"}, { b:"b"})// { a: "a", b: "b" }