Reading excel file in Reactjs

I am trying and banging my head already while trying to read excel file in Reactjs.

I have tried multiple libraries out there like, Sheetjs , excel-parser, exceljs and so on (like 8-9) libraries.

I am getting weird and different errors in every library.

For example i am using excel-parser and getting following error

Module not found: 'child_process'

That is because it is a node module and won’t work in browser.

Anyone know some good and easy library that can work with reactjs in browser?

Answer

I have successfully read excel file using Sheetjs‘s npm version xlsx.

Here is code:

import * as XLSX from 'xlsx';
//f = file
var name = f.name;
const reader = new FileReader();
reader.onload = (evt) => { // evt = on_file_select event
    /* Parse data */
    const bstr = evt.target.result;
    const wb = XLSX.read(bstr, {type:'binary'});
    /* Get first worksheet */
    const wsname = wb.SheetNames[0];
    const ws = wb.Sheets[wsname];
    /* Convert array of arrays */
    const data = XLSX.utils.sheet_to_csv(ws, {header:1});
    /* Update state */
    console.log("Data>>>"+data);
};
reader.readAsBinaryString(f);