Sourcepath to Nested Object Map

pathconverter.js

//pass in a csv file 
//record looks like this: { item: 'another/test/blank.cpp', org: 'tester', churn: '1' } 
//convert the source path to a tree like this:

/*
{
  "another": {
    "test":{
    "blank.cpp":{}
    }
  }
}

*/

const Papa = require("papaparse");
const fs = require("fs");

let FileMap = {};

SourcePathConverter("paths.csv");

//takes in a file path
function SourcePathConverter(CSVPath) {
	let csv = fs.readFileSync(CSVPath, "utf8");
	Papa.parse(csv, {
		header: true,
		step: function(row) {
			console.log(row.data);
			AddPathToTree(row.data[0]);
		},
		complete: function() {
			console.log("All done!");
		}
	});
	console.log(JSON.stringify(FileMap));
}

function AddPathToTree(record) {
	//add the line to the map as
	let pathElements = record.item.split("/");

	CheckPathRecursively(pathElements, record, FileMap, 0);
}

function CheckPathRecursively(pathElements, fileDetails, CurrentMap, currentIndex) {
	if (currentIndex >= pathElements.length) {
		return;
	}

	let key = pathElements[currentIndex];
	if (key in CurrentMap) {
		CheckPathRecursively(pathElements, fileDetails, CurrentMap[key], currentIndex + 1);
	} else {
		CurrentMap[key] = {
			org: fileDetails.org,
			churn: fileDetails.churn
		};
		CheckPathRecursively(pathElements, fileDetails, CurrentMap[key], currentIndex + 1);
	}
}