extend2 is a Node.js library that provides a simple function to extend objects, with the key difference being that it overrides arrays as primitive types during deep cloning. It is a fork of node-extend, optimized for scenarios where deep cloning of objects is required, particularly in environments where array handling is critical. This library is ideal for developers working with Node.js applications who need a reliable and efficient way to merge or clone objects, especially when dealing with nested structures.