Provides a generic tree data structure.
A tree has a root node, which may contain any number of child nodes, which may themselves contain child nodes, ad infinitum.
Child nodes are lightweight function instances which delegate to the tree for all significant functionality, so trees remain performant and memory-efficient even with thousands and thousands of nodes.
Y.Tree class doesn’t expose any UI, but the following gallery modules are
examples of components that extend
Y.Tree and provide a UI: