Intent to Extend Origin Trial: isInputPending
Shubhie Panicker
Contact emails
acom...@fb.com, n...@fb.com, pani...@google.com
Explainer
https://github.com/WICG/is-input-pending/
Spec draft
https://wicg.github.io/is-input-pending/
Summary
A method to query whether or not input events of a given type are likely to be dispatched to a document. Intended for use in JS schedulers to improve the responsiveness of pages by yielding when input is pending prior to processing lower priority tasks.
We would like to extend the experiment for two releases: M77, M78. This will allow us to get data from two more partners, we have been engaged with Google Ads, SOASTA analytics, and it took some time. So far we only have data from one partner: Facebook (their results are positive), and want at least one more data source to gain confidence.
Link to Intent to Experiment
https://groups.google.com/a/chromium.org/d/msg/blink-dev/ItkbDBevOrs/yFffQlqTBQAJ
Link to “Intent to Implement” blink-dev discussion
https://groups.google.com/a/chromium.org/d/msg/blink-dev/eLq8t56CbaQ/KdbOY7ZHCwAJ
Goals for experimentation
We’d like to measure the reduction in event dispatch latency in scheduler-driven pages as a result of yielding more intelligently using this API.
We’d also like to know what sort of input events developers are interested in querying for specifically, to determine the level of granularity that should be exposed by this API.
Experimental timeline
M77 - M78.
Any risks when the experiment finishes?
The correctness of intended consumers of the feature (JS schedulers) should be unaffected by the removal of the API.
Ongoing technical constraints
None.
Will this feature be supported on all five Blink platforms supported by Origin Trials (Windows, Mac, Linux, Chrome OS, and Android)?
No, only Windows, Mac, Linux, and Chrome OS. The current implementation requires site-per-process to perform attribution of pending input events, which is not shipped by default on Android. This will be addressed before any intent to ship.
Link to entry on the feature dashboard
https://www.chromestatus.com/feature/5719830432841728
Yoav Weiss
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