Robo 3T array to csv

arrayToCSV.js

//function to print CSV from an array for robomongo
//place this in .robomongorc.js which should be present in your home directory
//inspired by https://github.com/Studio3T/robomongo/wiki/How-to-export-to-CSV
function toCSV(array) {
    let deliminator = ',';
    let textQualifier = '\"';
    let headers = [];
    var data = {};
    var count = -1;

    for (var index in array[0]) {
        if (headers.indexOf(index) == -1) {
            headers.push(index);
        }
    }

    for (var i = 0; i < array.length; i++) {
        count++;
        for (var index in array[i]) {
            data[count + '_' + index] = array[i][index];
        }
    }
    
    var line = '';
    for (var index in headers) {
        line += textQualifier + headers[index] + textQualifier + deliminator;
    }

    line = line.slice(0, -1);
    print(line);

    for (var i = 0; i < count + 1; i++) {
        var line = '';
        var cell = '';
        for (var j = 0; j < headers.length; j++) {
            cell = data[i + '_' + headers[j]];
            if (cell == undefined) cell = '';
            line += textQualifier + cell + textQualifier + deliminator;
        }

        line = line.slice(0, -1);
        print(line);
    }

}