Window is not defined error when using worker

Hi,

I am currently using Papa Parse with npm, which I then import into my React file using:

import * as Papa from 'papaparse';

I’m using an upload button on the front-end to pass the file to React and using Papa Parse to parse CSV files. All works fine with small files but I realized with large ones, I’d need to use a worker or else the browser crashes. However adding the worker parameter is causing an error in the console. See below for reference:

Papa.parse( file, {
			worker        : true,
			header        : false,
			skipEmptyLines: 'greedy',
			step          : function( results ) {
				console.log( 'Result:', results.data );
			},
			complete      : function( results ) {
				console.log('Complete', results);
			}
		} );

Without the worker, the error goes away - any idea how to troubleshoot this? Is it my local environment or the way Papa Parse is set up in my project? Thanks!

If it helps, the CSV file I’m testing with is the “large file” from Papa Parse’s “local file” demo here: https://www.papaparse.com/demo

[pokoli]

Probably you need to set the PAPA_SCRIPT path variable as explained on the Can Papa Parse be loaded asynchronously (after the page loads)? section of our faq

[jjech]

I’m now successfully using worker with PapaParse.

Here are the final steps that worked for me.

1. Copied papaparse.js from node_modules/papaparse/ to my main app directory.
2. Added the following lines to both App.js and index.js

var Papa = require(“papaparse”); Papa.SCRIPT_PATH = “./papaparse.js”;