Cannot read properties of undefined (reading 'requestStart') on navigation with bfcache

[meskill]

I'm getting the error from the title on this line when testing bfcache in chrome browser.

Reproduction

1. Open Chrome DevTools -> Application -> Back/Forward Cache
2. Click Test Back/Forward cache

[SuperOleg39]

Initial problem from web-vitals package - https://github.com/GoogleChrome/web-vitals/issues/313

[SuperOleg39]

Following the discussion in web-vitals repo, we can still report 0 values and add just fix for BFCache case - https://github.com/Zizzamia/perfume.js/pull/221

[scamden]

i believe we are hitting this error as well fwiw

undefined is not an object (evaluating 'e.entries[0].requestStart')

[Zizzamia]

@scamden what version are you using?

[scamden]

8.4.0, should i try an upgrade?

[scamden]

I'm upgrading to 9.4 and will let you know if we see again

[Zizzamia]

Also, curios, what version of web-vitals are you resolving, maybe we need to upgrade from Perfume side as well.

[scamden]

Also, curios, what version of web-vitals are you resolving, maybe we need to upgrade from Perfume side as well.

@Zizzamia we have 3.5.2 for web vitals

[scamden]

prior to the upgrade 3.4.0 fwiw

[Zizzamia]

@scamden do you still see the issue after upgrade?

[scamden]

Haven't seen it since to my knowledge (although we had only seen it once so sample size is pretty low for this data :P )

Thanks for the tip on upgrading! Perfume is a great package :)

[Zizzamia]

Ok, so I think it's safe to close this for now.

I will reopen this if this issue happens again.