Web developers can specify node-to-slot assignments imperatively in Shadow DOM slotting. Please see the spec discussion  and the explainer . -  https://github.com/whatwg/html/issues/3534 -  https://github.com/w3c/webcomponents/blob/gh-pages/proposals/Imperative-Shadow-DOM-Distribution-API.md
Allow node-to-slot assignments without needing to add slot attribute in markup. And enabled dynamic slotting behavior based on input conditions.
Unknown standards status - check spec link for status
Status in Chromium
Enabled by default
Consensus & Standardization
Intent to Prototype urlIntent to Prototype thread
Last updated on 2021-12-13