While using performance.measure(...) the detail fields isn't passed on to the PerformanceObserver since Node V20

[mishaled]

Version

20

Platform

Mac

Subsystem

perf_hooks

What steps will reproduce the bug?

const { performance, PerformanceObserver } = require('perf_hooks');

const perfObserver = new PerformanceObserver((items) => {
  const entries = items.getEntries();
  entries.forEach((entry) => console.log(entry));
});

perfObserver.observe({ entryTypes: ['measure'] });

performance.mark(`sample-start`);
console.log('doing some work...');
performance.mark('sample-end');

performance.measure('sample', {
  start: 'sample-start',
  end: 'sample-end',
  detail: { some: 'data' },
});

How often does it reproduce? Is there a required condition?

Reproduces consistently

What is the expected behavior? Why is that the expected behavior?

The expected output-

doing some work...
PerformanceMeasure {
  name: 'sample',
  entryType: 'measure',
  startTime: 8.93499899105882,
  duration: 6.525000999999975,
  detail: { some: 'data' }
}

What do you see instead?

doing some work...
PerformanceMeasure {
  name: 'sample',
  entryType: 'measure',
  startTime: 8.93499899105882,
  duration: 6.525000999999975,
}

Additional information

Works well when using Node V18

[RedYetiDev]

Thanks for the report! If you don't mind, could you edit your issue to use markdown code blocks? That way it'll be easier for viewers to see code vs text.

[MeCode50]

@RedYetiDev I would like to work on this issue. I will start investigating the problem and will post updates here. Thank you!

[theanarkh]

You can use entry.detail or submit a PR to add toJSON function for PerformanceMeasure class .