LGTM to experiment On Mon, Mar 30, 2026 at 4:33 PM Chromestatus < [email protected]> wrote:
> *Contact emails* > [email protected] > > *Explainer* > > https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/ShadowDOM/explainer.md > > *Specification* > https://github.com/whatwg/html/pull/11687 > > *Design docs* > > > https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/ShadowDOM/explainer.md > > *Summary* > Declarative CSS Modules Scripts are an extension of the existing > script-based CSS Module Scripts. They allow for developers to share > declarative stylesheets with shadow roots, including declarative shadow > roots. Developers can define inline style modules with <style type="module" > specifier="foo"> and apply a declarative module to a declarative shadow DOM > by referencing specifier or a URL, such as <template shadowrootmode="open" > shadowrootadoptedstylesheets="foo">. > > *Blink component* > Blink>HTML > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EHTML%22> > > *Web Feature ID* > Missing feature > > *TAG review* > https://github.com/w3ctag/design-reviews/issues/1000. A second issue was > brought up to the TAG and has been addressed by the current design: > https://github.com/w3ctag/design-reviews/issues/1195 > > *TAG review status* > Issues addressed > > *Goals for experimentation* > We would like feedback on the API shape from developers, as well as > real-life performance benefits from using this API. > > *Risks* > > > *Interoperability and Compatibility* > *No information provided* > > *Gecko*: No signal ( > https://github.com/mozilla/standards-positions/issues/1081) > > *WebKit*: No signal ( > https://github.com/WebKit/standards-positions/issues/407) > > *Web developers*: Positive ( > https://github.com/WICG/webcomponents/issues/939) "Styling and > Customization" is listed as the #1 pain point for Web Components in > https://2023.stateofhtml.com/en-US/features/web_components/#using_web_components_pain_points, > which this proposal addresses. > > *Other signals*: > > *WebView application risks* > > Does this intent deprecate or change behavior of existing APIs, such that > it has potentially high risk for Android WebView-based applications? > *No information provided* > > > *Ongoing technical constraints* > None > > *Debuggability* > Applied styles are reflected in developer tools. Adopted stylesheets are > reflected in the DOM. Error conditions are logged to the console. > > *Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)?* > Yes > > *Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* > Yes > > https://wpt.fyi/results/shadow-dom/declarative/tentative/shadowrootadoptedstylesheets > https://wpt.fyi/results/html/semantics/document-metadata/the-style-element/tentative > > *Flag name on about://flags* > None yet > > *Finch feature name* > DeclarativeCSSModules > > *Requires code in //chrome?* > False > > *Tracking bug* > https://issues.chromium.org/issues/448174611 > > *Estimated milestones* > Origin trial desktop first 148 > Origin trial desktop last 153 > Origin trial Android first 148 > Origin trial Android last 153 > Origin trial WebView first 148 > Origin trial WebView last 153 > > *Link to entry on the Chrome Platform Status* > https://chromestatus.com/feature/4790543041298432?gate=5195795808780288 > > *Links to previous Intent discussions* > Intent to Prototype: > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/68dab832.050a0220.1ba43a.01ee.GAE%40google.com > > > This intent message was generated by Chrome Platform Status > <https://chromestatus.com>. > > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/69caddf0.050a0220.219f27.0666.GAE%40google.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/69caddf0.050a0220.219f27.0666.GAE%40google.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAFUtAY_87cspC6dusR5eTPzRZdXPGUO_CG1f6O5sJ3SPtP%2Bo1Q%40mail.gmail.com.
