JavaScript: Get a list of all paths from root to leaves (rose tree)

RoseTreeToPaths.js

// The rose tree is a data structure that's used to represent hierarchical
// data like XML / HTML documents or filesystems (directory and file structures).
// See this in action on the Ramda REPL: https://goo.gl/XeToZt
// R = Ramda :: http://ramdajs.com/docs/

// much cleaner solution, thanks to @syaiful6 in Ramda's Gitter channel ( https://gitter.im/ramda/ramda )
const listPathsFromRoseTree = 
  tree => 
    !is( Array, tree[ 1 ] )
    || isEmpty( tree[ 1 ] )
      ? [ [ tree[ 0 ] ] ]
      : map( prepend( tree[ 0 ] ) )
           ( chain( listPathsFromRoseTree )
                  ( tree[ 1 ] )
           )

listPathsFromRoseTree( roseTree )