JSON to CSV string

JSONToCSV.js

 /**
    * Return a CSV string from an array of json object
    *
    * @method JSONtoCSV
    * @param {Object} jsonArray an array of json object
    * @param {String} [delimiter=;] delimiter
    * @param {String} [dateFormat=ISO] dateFormat if a date is detected
    * @return {String} Returns the CSV string
    **/
    function _JSONtoCSV(jsonArray, delimiter, dateFormat) {
        dateFormat = dateFormat || 'YYYY-MM-DDTHH:mm:ss Z'; // ISO
        delimiter = delimiter || ',';
        console.log(jsonArray);
        var body = '';
        // En tete
        var keys = _.map(jsonArray[0], function (num, key) { return key; });
        body += keys.join(delimiter) + '\r\n';
        // Data
        for (var i = 0; i < jsonArray.length; i++) {
            var item = jsonArray[i];
            for (var j = 0; j < keys.length; j++) {
                var obj = item[keys[j]];
                if (_.isDate(obj)) {
                    body += moment(obj).format(dateFormat);
                } else {
                    body += obj;
                }

                if (j < keys.length - 1) {
                    body += delimiter;
                }
            }
            body += '\r\n';
        }

        return body;
    }