It looks like all of the usage numbers are negligible (less than 1 in 2 million page loads, i.e., less than 0.00005%) except for TransitionEvent, which is around 0.01% of page loads (1 in ten thousand). Do you know anything about the usage of TransitionEvent? Is it for feature detection?
-David On Fri, Feb 20, 2026 at 7:25 AM Yoav Weiss (@Shopify) < [email protected]> wrote: > I believe we'd need some more information about the compatibility and > interoperability risks with this. > > On Fri, Feb 20, 2026 at 10:50 AM Chromestatus < > [email protected]> wrote: > >> *Contact emails* >> [email protected], [email protected] >> >> *Explainer* >> *No information provided* >> >> *Specification* >> https://dom.spec.whatwg.org/#dom-document-createevent >> >> *Summary* >> Remove support for creating non-allowlisted event interfaces from >> document.createEvent(). After this change, these will throw >> NOT_SUPPORTED_ERR as required by the specification. >> >> *Blink component* >> Blink>DOM >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EDOM%22> >> >> *Web Feature ID* >> *No information provided* >> >> *Motivation* >> The DOM spec defines an allow-list for createEvent(), but Chrome also >> supports interfaces not on this list: - AnimationEvent - Usage : 0( >> https://chromestatus.com/metrics/feature/timeline/popularity/1162) - >> CloseEvent - Usage : 0( >> https://chromestatus.com/metrics/feature/timeline/popularity/1227) - >> ErrorEvent - Usage : 0( >> https://chromestatus.com/metrics/feature/timeline/popularity/1170) - >> IDBVersionChangeEvent - Usage : 0( >> https://chromestatus.com/metrics/feature/timeline/popularity/1201) - >> KeyboardEvents - Usage : 0.00003( >> https://chromestatus.com/metrics/feature/timeline/popularity/1228) - >> PageTransitionEvent - Usage : 0( >> https://chromestatus.com/metrics/feature/timeline/popularity/1174) - >> PopStateEvent - Usage : 0.000007( >> https://chromestatus.com/metrics/feature/timeline/popularity/1176) - >> TrackEvent - Usage : 0( >> https://chromestatus.com/metrics/feature/timeline/popularity/1186) - >> TransitionEvent - Usage : 0.012334( >> https://chromestatus.com/metrics/feature/timeline/popularity/1183) - >> WebGLContextEvent - Usage : 0( >> https://chromestatus.com/metrics/feature/timeline/popularity/1224) - >> WheelEvent - Usage : 0.000011( >> https://chromestatus.com/metrics/feature/timeline/popularity/1184) These >> interfaces lack init*Event() methods, making the created events unusable. >> Event constructors can be used instead (e.g., new AnimationEvent()). >> >> *Initial public proposal* >> *No information provided* >> >> *Debuggability* >> *No information provided* >> >> *Requires code in //chrome?* >> False >> >> *Tracking bug* >> https://issues.chromium.org/issues/41228793 >> >> *Estimated milestones* >> DevTrial on desktop 146 >> DevTrial on Android 146 >> >> *Link to entry on the Chrome Platform Status* >> https://chromestatus.com/feature/5095987863486464?gate=6283297569243136 >> >> 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/69982e7e.710a0220.1e5fb2.0081.GAE%40google.com >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/69982e7e.710a0220.1e5fb2.0081.GAE%40google.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/CAOmohSJJXuX1tYg%2BBs%2BzxWqGT-bEasBab3d2fKcXn80F35q8pg%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohSJJXuX1tYg%2BBs%2BzxWqGT-bEasBab3d2fKcXn80F35q8pg%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/CAG0MU3gSO%2BonKvPc_8bKOhQfRDCAWD0QG2_9k2QPMdzM1Xs4mw%40mail.gmail.com.
