How to convert csv to json with simple javascript / convert csv to json without npm package

How to convert csv to json with simple javascript / convert csv to json without npm package

Code:
Program:
const fs = require('fs')
var jsonObject = [];
var headers = arr[0].split(',')
var data = arr[i].split(',');
var object = {};
object[headers[j].trim()] = data[j].trim();
}
}

CSV File:
fname,lname,sno,phone,address
a,b,1,234,india
c,d,2,456,india
e,f,3,789,india

Chapters:
0:00 - Introduction of the video
0:53 - Program for converting csv to json with simple javascript
7:30 - Execution of the program
8:03 - End Tags and subscription to channel

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[Laxami]

It show error '' cannot read properties of undefined (reading 'trim')''