To play devil's advocate, note that Google is trying to propose something to make the shadow root contents deserializable without relying on JavaScript [1][2].

To play devil's advocate, note that Google is trying to propose something to make the shadow root contents deserializable without relying on JavaScript [1][2]. [1] https://github.com/mfreed7/declarative-shadow-dom/blob/master/README.md https://github.com/mfreed7/declarative-shadow-dom/blob/maste... [2] https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/nJDc-1s3R9U/uCJKsEqpAwAJ https://groups.google.com/a/chromium.org/forum/#!msg/blink-d...