How to create intermediate objects from an object?

Question

JavaScript

Suppose there is:
routes\jsdom\node_modules\array-equal
routes\jsdom\node_modules\asn1
routes\jsdom\node_modules\assert-plus
routes\jsdom\node_modules\async
routes\jsdom\node_modules\ansi-styles
routes\jsdom\node_modules\ aws4
routes={};
I want to get a function

function add_routes(patch){


}

which outputs nested objects

routes.jsdom.node_modules.array-equal
routes.jsdom.node_modules.asn1

Answer 1

Array.reduce поможет

var root = {};
function add_routes(path, root) {
  path.split('\\')
    .reduce(function(currentNode, item){
      return currentNode = currentNode[item] = {};
    }, root)
}