Hi, We intend to turn on the preference of the Animation timelines this week. * dom.animations-api.timelines.enabled
This preference enables Animation.timeline getter, Document.timeline, and DocumentTimeline and AnimationTimeline interfaces. This feature has been implemented in WebKit and Blink in their nightly version, but they haven't shipped this to their release channels yet. We expect this will happen soon in the next version of Safari and shortly after in Chrome. We implemented and enabled this (together with mutable Animation.timeline) at least 3 years ago, and recently we added a build flag to enable mutable Animation.timeline only on Nightly version, so we can easily ship read-only Animation.timeline and others by the pref. WebKit and Blink are ready to ship this feature recently, so we would like to ship it too in Firefox 75. Bug to turn this on by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1619178 There is no specific intent to prototype these features. They have been implemented as part of the ongoing work on the Web Animations API. There are various web-platform-tests which use the getter of Animation.timeline, Document.timeline in web-an <https://searchfox.org/mozilla-central/source/testing/web-platform/tests/web-animations/timing-model/timelines> imations/timing-model/timelines <https://searchfox.org/mozilla-central/source/testing/web-platform/tests/web-animations/timing-model/timelines> and a lot of places in web-an <https://searchfox.org/mozilla-central/source/testing/web-platform/tests/web-animations/interfaces> imations/interfaces/ <https://searchfox.org/mozilla-central/source/testing/web-platform/tests/web-animations/interfaces> . And there are some web-platform-tests for AnimationTImeline/DocumentTimeline in web-animations/interfaces/DocumentTimeline. <https://searchfox.org/mozilla-central/source/testing/web-platform/tests/web-animations/interfaces/DocumentTimeline> Please let me know if you have any concerns. Best regards, Boris _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform