A simple Node.js script to convert CSV to JSON

csv2json.js

//Node.js script to convert CSV to JSON
var fs = require('fs');

//Parameters
var infile = process.argv[2]; //First command line arg
var outfile = process.argv[3] || (infile + ".json"); //Last command line arg or add ".json" extension

//Read CSV file
var content = fs.readFileSync(infile, 'utf8');

//Parse CSV
var table = [ ];
var lines = content.split(/[\r\n]+/g); //New line chars
for (var i = 0; i < lines.length; i++) {
  table.push(lines[i].split(/[\t;]/)); //Separator chars: tab or semicolon
};

//Convert to JSON
var result = { headers: [ ], rows: [ ] };
for (var r = 0; r < table.length; r++) {
  var row = { };
  for (var c = 0; c < table[r].length; c++) {
    var value = (table[r][c] || "").replace(/^"(.*)"$/, "$1"); //Remove double quotes
    if (r == 0) result.headers.push(value);
    else row[result.headers[c] || ("_Column_" + c)] = value;
  }
  if (r > 0) result.rows.push(row);
}

//Write JSON file  
var json = JSON.stringify(result, " ", 2);
fs.writeFileSync(outfile, json);
console.log("Done!");

//Example:
//  Price;Fruit
//  0.80;"Apple"
//  1.20;Banana
//  1.00;Kiwi
//
//  {
//    "headers": { "Price", "Fruit" },
//    "rows": [
//      { "Price": "0.80", "Fruit": "Apple" },
//      { "Price": "1.20", "Fruit": "Banana" },
//      { "Price": "1.00", "Fruit": "Kiwi" }
//    ]
//  }

Run: node csv2json.js file.csv
To change column separator char edit line 15
To change new line char edit line 13

Note: This simple script handles most everyday cases, but does not handle the cases where a row/column value contains a separator char or a new line char. For example, if you have a ';' char as column separator and also ';' char in the text then the columns will be misaligned for that row.