Codesandbox-client: Console.time almost always shows 0ms in CodeSandbox console - but real results are available in the browser's console

[Slapbox]

🐛 bug report

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Description of the problem

I'm doing some benchmarking and I noticed that when dealing with times like 24000ms, instead CodeSandbox shows 0ms, or in some cases 1ms.

To Reproduce

Link to sandbox: https://codesandbox.io/s/infallible-tdd-ex27s?file=/src/index.js

Your Environment

| Software | Name/Version |
| ---------------- | ------------ |
| Сodesandbox |
| Browser | Firefox 82
| Operating System | Windows 7

[sannek]

Thanks for your bug report. I can indeed reproduce this. We're going to investigate, and will get back to you.

[SaraVieira]

Seems to be an issue with Console Feed in Firefox, trying to figure this out with Sam that made console-feed

[Slapbox]

@SaraVieira @sannek actually the issue exists in Chrome too. Although the output in Chrome differs from that in Firefox, neither matches the output in the console.

[SaraVieira]

I noticed but honestly also not fully sure how close you can even get when its a console emulation 🤔

[Slapbox]

@SaraVieira what stood out to me was the way the outputs differ.

In Chrome the emulated console shows: merge: 0.3850000211969018ms

But in the real console it shows merge: 25476.956298828125 ms

Maybe it's not at all surprising since Chrome natively includes fractional milliseconds and Firefox does not - but it struck me as odd since I figured whatever logic caused this issue would cause the same issue in Chrome.

[SaraVieira]

Ever since I started working on CodeSandbox I found out a lot of things come from the underlying architecture of the browser and even sometimes how that browser would even interact with the OS underneath.

It is a weird one tho and I will keep you updated