Convert array with flat objects to comma separated CSV. Also works with objects where prop(s) is an array with same length in all the objects.

javascriptObjectToCSV.js

var fs = require('fs');
function arrayToProps(o){
    let props = Object.keys(o).forEach(p => {
        if(o[p] instanceof Array){
            var a = o[p];
            delete o[p];
            a.forEach((e, i) => (o[p + "_" + i] = e));
        }
    });
    return o;
}
function convertToCsv(array, name) {
    var hSplit = '","';

    var stream = fs.createWriteStream('CSV/' + name + '_' + (new Date()).toDateString() + '_' + (Math.floor(Date.now() / (1000 * 60))) + '_pt.csv', { flags: 'a' });
    array = array.map(e => arrayToProps(e));
    var props = Object.keys(array[0]);
    var header = '"' + props.join(hSplit) + '"\r\n'
    stream.write(header);

    array.forEach(e => stream.write('"' + props.map(p => e[p]).join(hSplit) + '"\r\n'));
    stream.end();
}

let array = [
  {name: 'test1', points: [3, 5, 6, 8, 9, 23, 44] },
  {name: 'test2', points: [32, 51, 36, 18, 9, 23, 44] },
  ];
convertToCsv(array, "test"); // => "name","points_0","points_1","points_2","points_3","points_4","points_5","points_6"
                            //      "test1","3","5","6","8","9","23","44"
                            //      "test2","32","51","36","18","9","23","44"