Ah I see Emilio gave the same feedback here: https://github.com/w3c/long-animation-frames/pull/30#issuecomment-3819162688 can you address this before experimenting?
On Fri, Mar 6, 2026 at 9:02 AM Ian Kilpatrick <[email protected]> wrote: > > > On Fri, Mar 6, 2026 at 8:58 AM Yoav Weiss (@Shopify) < > [email protected]> wrote: > >> *Contact emails* >> [email protected] >> >> *Explainer* >> https://github.com/w3c/long-animation-frames/pull/30#issue-3828859369 >> >> *Specification* >> https://github.com/w3c/long-animation-frames/pull/30 >> >> *Summary* >> Add `styleDuration`, `forcedStyleDuration`, `layoutDuration` and >> `forcedLayoutDuration` information to the Long Animation Frame API, >> enabling developers to distinguish style and layout times. >> >> > Its incorrect to think of style and layout as two separate things now. > They can be interleaved. What's the usecase for separating them out? E.g. > can the API be simplified as a styleLayoutDuration and > forcedStyleLayoutDuration ? > > Ian > > >> *Blink component* >> Blink>PerformanceAPIs >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EPerformanceAPIs%22> >> >> *Web Feature ID* >> Missing feature >> >> *TAG review* >> *Not yet.* >> >> *TAG review status* >> Pending >> >> *Risks* >> >> >> *Interoperability and Compatibility* >> *New attributes, so no compatibility risk. In terms of Interop, this >> doesn't increase the interop risk of LoAF, which is currently only shipped >> in Chromium.* >> >> *Gecko*: No signal >> >> *WebKit*: No signal >> >> *Web developers*: Shopify developers need the data these attributes >> expose in order to better understand CSS performance bottlenecks in the >> wild. >> >> *Other signals*: >> >> *WebView application risks* >> >> Does this intent deprecate or change behavior of existing APIs, such that >> it has potentially high risk for Android WebView-based applications? >> *No.* >> >> >> *Goals for experimentation* >> *See if the API provides the right data that enables developers to >> understand their CSS performance bottlenecks.* >> >> *Ongoing technical constraints* >> *No.* >> >> *Debuggability* >> *Not applicable.* >> >> *Will this feature be supported on all six Blink platforms (Windows, Mac, >> Linux, ChromeOS, Android, and Android WebView)?* >> Yes. >> >> *Is this feature fully tested by web-platform-tests >> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* >> Yes. >> >> >> *Flag name on about://flags* >> *No information provided* >> >> *Finch feature name* >> *LongAnimationFrameStyleDuration* >> >> *Non-finch justification* >> *No information provided* >> >> *Requires code in //chrome?* >> False >> >> *Tracking bug* >> https://issues.chromium.org/issues/476826067 >> >> *Estimated milestones* >> >> M147-M152 >> >> >> *Link to entry on the Chrome Platform Status* >> https://chromestatus.com/feature/5171478175809536?gate=5452953152520192 >> >> *Links to previous Intent discussions* >> Intent to Prototype: >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohSJxRuMp6Ha5RVCjzNfsG0Sj96Y%3Dgy9LnxtM%2Brq-S6DEew%40mail.gmail.com >> >> >> This intent message was generated by Chrome Platform Status >> <https://chromestatus.com/>. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "blink-dev" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohSJ2PJ0dZxYH48PALOSUenSSV7VuZ9CzTHnGd8u_jTKkcg%40mail.gmail.com >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohSJ2PJ0dZxYH48PALOSUenSSV7VuZ9CzTHnGd8u_jTKkcg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJL3UpSONW%3Dz4kbuMC8Kjnc6oEztJ1RjaE-FL2DJ%2BVs9oL-4gw%40mail.gmail.com.
