How to convert JSON to XLSX node.js express

I am trying to convert JSON to XLSX in nodejs download that XLSX to the client browser. I used XLSX npm module to convert json to XLSX but Ii cannot see the data in the xslx file and download that file.

const fs = require("fs");
const json2xlsx = require("json2xlsx");
const xlsx = require("xlsx");
const fileName = "data.xlsx";

async function generateExcelFromJSON() {
  try {
    let data = JSON.parse(
      fs.readFileSync("public/data/result.json", {
        encoding: "utf8",
        flag: "r",
      })
    );
    
    let newWS = xlsx.utils.json_to_sheet(data);
    let newWB = xlsx.utils.book_new();
    xlsx.utils.book_append_sheet(newWS, newWB, "data");

    await xlsx.writeFile("./public/data/data.xlsx", newWB);
   // xlsx.writeFile(newWB, "./public/data/data.xlsx");
  } catch (error) {
    console.log(error);
  }
}
module.exports = {
  download(req, res) {
    let jsonFile = req.files.fileJSON;

    jsonFile.mv("public/data/result.json", function (err) {
      if (err) {
        return res.status(500).send(err);
      } else {
        json2xlsx();
      }
    });
    res.redirect("/xlsx");
  },
};