fp-rosetree (npm): - [Motivation](#motivation)  - [Concepts](#concepts)  - [Key contracts](#key-contracts)  - [API](#api)    * [breadthFirstTraverseTree :: Lenses -> TraverseSpecs -> Tree -> A](#breadthfirsttraversetree--lenses---traversespecs---tree---a)    * [preorderTrav
Keywords: data-structures|functional|javascript|lenses|library|rose-tree|tree