How to use perf_hooks - 10 common examples

const suggestSync3Test = (word: string): number => {
  let start = performance.now()
  nodehun3.suggestSync(word)
  let end = performance.now()
  return end - start
}

function (url, opts) {
        performance.mark(url + " - begin")
        const { fetch } = abortableFetch(nodeFetch) as any
        return fetch(url, opts).then(_ => {
            performance.mark(url + " - end")
            const measure = () => performance.measure(_.url, url + " - begin", url + " - end")
            performance.clearMarks(url + " - begin")
            if(timeout)
                setTimeout(measure, timeout)
            else
                measure()
            return _
        })
    }

setTimeout(() => {
    performance.mark('B');
    performance.measure('A to B', 'A', 'B');
  }, 1);

setTimeout(() => {
    performance.mark('B');
    performance.measure('A to B', 'A', 'B');
  }, 1);

remoteDataChannel.addEventListener('message', ({ data }) => {
    if (times.length < n) {
      const timestamp = Number.parseFloat(data);
      const time = performance.now() - timestamp;
      times.push(time);
    }
  });

function measure(name: string, fn: () => void) {
  const start = performance.now();
  fn();
  const time = performance.now() - start;
  if (!result[name]) {
    result[name] = [];
  }
  result[name].push(time);
  //console.log(`${name} in: ${time}ms`);
  return name;
}

function measure(name: string, fn: () => void) {
	const start = performance.now();
	fn();
	const time = performance.now() - start;
	if (!result[name]) {
		result[name] = [];
	}
	result[name].push(time);
	//console.log(`${name} in: ${time}ms`);
	return name;
}

function measure(name: string, fn: () => void) {
  const start = performance.now();
  fn();
  const time = performance.now() - start;
  if (!result[name]) {
    result[name] = [];
  }
  result[name].push(time);
  //console.log(`${name} in: ${time}ms`);
  return name;
}

function measure(name: string, fn: () => void) {
  const start = performance.now();
  fn();
  const time = performance.now() - start;
  if (!result[name]) {
    result[name] = [];
  }
  result[name].push(time);
  //console.log(`${name} in: ${time}ms`);
  return name;
}

const perf = name => {
    if (measures.includes(name)) {
        performance.mark(`${name}_end`);
        performance.measure(`${name} start to ${name} end`, name, `${name}_end`);
        //let measure = performance.getEntriesByName(`${name} start to ${name} end`)[0];
        //log(`${name} Done in ${(measure.duration/1000).toFixed(2)}s.`);

        clearPerf(name);
    }

    else {
        performance.mark(name);
        const obs = new PerformanceObserver((list, observer) => {
            console.log(list.getEntries());
            observer.disconnect();
        });
        measures.push(name);
    }
};