The async-tree JavaScript library lets you work with any kind hierarchical data as a consistent type of abstract tree. Each node of the tree is either a standard JavaScript Map or an asynchronous variation called AsyncMap.
This library is an implementation of the Map Tree pattern. It provides helper classes like ObjectMap and FileMap that can treat a range of data sources as maps. The library also includes helper functions for common tree operations.
The async-tree library lets you create applications in plain JavaScript like those possible in the Origami expression language. For an example of a basic blog created directly with the library, see the sample async-tree blog site.