[Intersection Observer] Accept a Document as an explicit root

# Frédéric Wang (3 days ago)


This email is to announce that Igalia has started to implement a recent enhancement to Intersection Observer, that allows users to specify a Document as an explicit root. The typical use case is when such a Document is the one of an iframe. Below is some documentation:

WebKit bug: bugs.webkit.org/show_bug.cgi?id=208047 W3C issue: w3c/IntersectionObserver#372 Gecko bug: bugzilla.mozilla.org/show_bug.cgi?id=1617154 (intent-to will follow) Chromium bug: chromium-review.googlesource.com/c/chromium/src/+/2003750

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