How to use chrome-trace-event - 6 common examples

export const createTrace = outputPath => {
  const trace = new Tracer({
    noStream: true,
  })
  const profiler = new Profiler(inspector)
  if (/\/|\\/.test(outputPath)) {
    const dirPath = path.dirname(outputPath)
    mkdirp.sync(dirPath)
  }
  const fsStream = fs.createWriteStream(outputPath)

  let counter = 0

  trace.pipe(fsStream)
  // These are critical events that need to be inserted so that tools like
  // chrome dev tools can load the profile.
  trace.instantEvent({
    name: 'TracingStartedInPage',

const createTrace = outputPath => {
	const trace = new Tracer({
		noStream: true
	});
	const profiler = new Profiler(inspector);
	if (/\/|\\/.test(outputPath)) {
		const dirPath = path.dirname(outputPath);
		mkdirp.sync(dirPath);
	}
	const fsStream = fs.createWriteStream(outputPath);

	let counter = 0;

	trace.pipe(fsStream);
	// These are critical events that need to be inserted so that tools like
	// chrome dev tools can load the profile.
	trace.instantEvent({
		name: "TracingStartedInPage",

const createTrace = outputPath => {
	const trace = new Tracer({
		noStream: true
	});
	const profiler = new Profiler(inspector);
	const fsStream = fs.createWriteStream(outputPath);

	let counter = 0;

	trace.pipe(fsStream);
	// These are critical events that need to be inserted so that tools like
	// chrome dev tools can load the profile.
	trace.instantEvent({
		name: "TracingStartedInPage",
		id: ++counter,
		cat: ["disabled-by-default-devtools.timeline"],
		args: {
			data: {

function createTrace(outputPath) {
	const trace = new Tracer({
		noStream: true
	});
	const profiler = new Profiler(inspector);
	const fsStream = fs.createWriteStream(outputPath);

	let counter = 0;

	trace.pipe(fsStream);
	// These are critical events that need to be inserted so that tools like
	// chrome dev tools can load the profile.
	trace.instantEvent({
		name: "TracingStartedInPage",
		id: ++counter,
		cat: ["disabled-by-default-devtools.timeline"],
		args: {
			data: {

constructor() {
    this.tracer = new Tracer();
    this.tid = 0;
    this.eventId = 0;
    this.init();
  }