tunetheweb,
@tunetheweb@webperf.social avatar

We’ve just published a v4 release candidate of web-vitals.js:

https://www.npmjs.com/package/web-vitals/v/4.0.0-rc.0

We’re not planning any further changes so if no issues or bugs are reported then we plan to release v4.0.0 in the next week or so.

This release contains:

  • INP breakdowns (input delay, processing duration, presentation delay) to point you in the direction of the cause.
  • INP Long Animation Frame (LoAF) entry/entries for further help debugging INP with script and timing info of things affecting INP.
tunetheweb,
@tunetheweb@webperf.social avatar

As a pre-Google I/O warm up we've just released web-vitals v4! 🎉

See the above thread for all the improvements, and things you need to know to upgrade.

And, later this week, check out @malchata 's talk for Google I/O where he'll be explaining how to use these new features to improve INP:
https://io.google/2024/explore/ba446093-0036-410b-ba1e-f9016ec21899/

#webperf

tunetheweb,
@tunetheweb@webperf.social avatar

It also contains a number of breaking changes (hence the major version bump), primarily to the INP attribution model, so if not using that yet then should be fine. You can read about all the breaking changes in this handy upgrade doc: https://github.com/GoogleChrome/web-vitals/blob/v4/docs/upgrading-to-v4.md

‪Do drop any feedback (Ship it! Small bug! Major bug) as an issue in the GutHub repo or by replying to this thread.‬

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