D3 CSV read function inside action

[xTMNTxRaphaelx]

I am trying to parse a CSV inside my vorpal js command but it returning undefined always. Same function is working on browser.

Any suggestions on how to acheive it?

[dthree]

Can you give some sample code that isn't working?

[xTMNTxRaphaelx]

Alright, this is a sample code i wrote right now..

'use strict';

const vopral= require('vorpal')().show();
const d3= require('d3');

function readCSV(csv_name, cb) {
      // read file
        d3.csv("cities.csv", function(data) {
              cb(data);
    });
}

vopral.command('read [csv_file_name]')
    .action(function(args, cb) {
        var self= this;
        let str= args.csv_file_name;
        // read csv
        readCSV(str, function(data) {
            // finish cb with another callback function
            self.log(data);
            cb();
        });
    })
    // desperate try wishing something happen
    .parse(process.argv);

/**
 There is a big error showing right now. Saying
  [ { 'Error: connect ECONNREFUSED 127.0.0.1:80': '    at Object.exports._errnoException (util.js:873:11)' },
  { 'Error: connect ECONNREFUSED 127.0.0.1:80': '    at exports._exceptionWithHostPort (util.js:896:20)' },
  { 'Error: connect ECONNREFUSED 127.0.0.1:80': '    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1077:14)' },
  columns: [ 'Error: connect ECONNREFUSED 127.0.0.1:80' ] ]

  I think its because it cannot find such port. 
  CSV file is in same directory of it.

  Also, when i tried such code at work, there wasnt even any error. I didnt understood what happened.
 */

Any help is fine.

[dthree]

Thanks.

This isn't really a Vorpal-related error. If you remove Vorpal from the picture and just run this d3.csv method in Node, you'll come up with the same error, so I would focus on that end of it to reduce complexity.

What you were guessing on it trying to connect to and read the CSV is probably correct!