The feature ships in Chrome 150, and only behind a flag, while some sub-features ship in Chrome 152. Turn on chrome://flags/#enable-experimental-web-platform-features to try it. It is not Baseline, and you shouldn’t ship it to production yet.

The encouraging part is the cross-engine signal. Firefox has given the proposal a positive standards position, and WebKit has signalled support too. It’s rare to see all three engines leaning the same way this early, and it’s a good sign this lands as a real, interoperable feature rather than a Chrome-only experiment.