tasks/datadriver.js
function(result) {

                    // Write result to file if it was opened
                    if (fd && result.slice(0, 3) !== '[D]' && result.match(/\u001b\[/g) === null) {
                        fs.writeSync(fd, result);
                    }

                    // Prevent the original process.stdout.write from executing if quiet was specified
                    if (options.quiet) {
                        return hooker.preempt();
                    }

                }
function(result) {

                    // Write result to file if it was opened
                    if (fd && result.slice(0, 3) !== '[D]' && result.match(/\u001b\[/g) === null) {
                        fs.writeSync(fd, result);
                    }

                    // Prevent the original process.stdout.write from executing if quiet was specified
                    if (options.quiet) {
                        return hooker.preempt();
                    }

                }
This gets executed before the original process.stdout.write