How can node.js process large-capacity Excel files separately? - node.js

Question

https://github.com/exceljs/exceljs
There is a problem in creating applications through electron and Exceljs.
I want to read the Excel file and show it to user in the html table. The problem is that it deals with xlsx files with a very large number of rows.
So I want to show the progress to the user as follows.
ex) 5/10000. (Read row / Total number of rows)
Also, if possible, I would like to return the data in the form of json or html whenever I read it. (If this is impossible, I'd like to indicate that it's loading until it's finished)
const filePath = "/Users/caglia/Documents/test.xlsx"
const ExcelJS = require('exceljs')
async function loadExcelFile(filePath) {
let start = new Date();
console.log('start :', Date.now())
const sheetData = []
const workbook = new ExcelJS.Workbook()
await workbook.xlsx.readFile(filePath)
const worksheet = workbook.worksheets[0] // first sheet
const options = {
includeEmpty: true
}
await worksheet.eachRow(options, (row, rowNum) => {
sheetData[rowNum] = []
//console.log('rowNum', rowNum)
row.eachCell(options, (cell, cellNum) => {
sheetData[rowNum][cellNum] = {
value: cell.value
}
})
})
let end = new Date();
console.log('finish ', Date.now(), 'timediff', end - start);
}
loadExcelFile(filePath)