JavaScript Functional Double-linked List

javascript_functional_double_linked_list.js

function prev(prev){return (self)=>(next)=>prev};
function self(prev){return (self)=>(next)=>self};
function next(prev){return (self)=>(next)=>next};

function node(self){return (next)=>(prev)=>(select)=>select(prev)(self)(next?next(node(self)(next)(prev)):next)};

function array2doublelist(array, index){
  return index<array.length?
    node(array[index])(array2doublelist(array,index+1))
    :null;
}

list = node(1)(node(2)(node(3)(null)))(null);

list2 = array2doublelist([1,2,3,4,5],0)(null);

console.log(list(self), list2(self), list(next)(next)(self), list2(next)(next)(next)(prev)(prev)(self));