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
varextend=require("xtend")// extend returns a new object. Does not mutate argumentsvarcombination=extend({a:"a",b:'c'},{b:"b"})// { a: "a", b: "b" }