I am implementing the Element.isVisible method in Chromium, and I would like to hear WebKit's position on the feature.

Chromestatus entry: https://chromestatus.com/feature/5163102852087808

Spec: https://drafts.csswg.org/cssom-view/#dom-element-isvisible

Explainer: https://github.com/WICG/display-locking/blob/main/explainers/isvisible.md

CSSWG issue: https://github.com/w3c/csswg-drafts/issues/6850

Element.isVisible() returns true if the element is visible, and false if it is not. It checks a variety of factors that would make an element invisible, including display:none, visibility, content-visibility, and opacity.