How to use the cson.createCSONString function in cson

function save(callback) {
    const csonString = CSON.createCSONString(config);

    fs.writeFile('./config.cson', csonString, (error) => {
        if (error) {
            console.log(chalk.red(error));
            console.log(''); // Empty line
            callback(error);
            return false;
        }

        callback();
    });
}

Details: err,
            Errors: [{
                Message: err,
                FileName: sourceFileName
            }]
        }));
        writer.end();
        return;
    }

    writer.write(JSON.stringify({
        Success: true,
        SourceFileName: sourceFileName,
        TargetFileName: targetFileName,
        Remarks: "Successful!",
        Content: CSON.createCSONString(data)
    }));
    writer.end();
};
//#endregion