Declarative Shadow DOM

- UNOFF

Proposal to allow rendering elements with shadow dom (aka web components) using server-side rendering.

Chrome

  1. 4 - 84: Not supported
  2. 85 - 89: Disabled by default
  3. 90 - 116: Supported
  4. 117: Supported
  5. 118 - 120: Supported

Edge

  1. 12 - 89: Not supported
  2. 90 - 116: Supported
  3. 117: Supported

Safari

  1. 3.1 - 16.3: Not supported
  2. 16.4 - 16.6: Supported
  3. 17.0: Supported
  4. 17.1 - TP: Supported

Firefox

  1. 2 - 116: Not supported
  2. 117: Not supported
  3. 118 - 120: Not supported

Opera

  1. 9 - 76: Not supported
  2. 77 - 101: Supported
  3. 102: Supported

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Chrome for Android

  1. 117: Supported

Safari on iOS

  1. 3.2 - 16.3: Not supported
  2. 16.4 - 16.6: Supported
  3. 17.0: Supported
  4. 17.1: Supported

Samsung Internet

  1. 4 - 14.0: Not supported
  2. 15.0 - 21: Supported
  3. 22: Supported

Opera Mini

  1. all: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 73: Supported

UC Browser for Android

  1. 15.5: Supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 117: Supported

Firefox for Android

  1. 117: Not supported

QQ Browser

  1. 13.1: Not supported

Baidu Browser

  1. 13.18: Supported

KaiOS Browser

  1. 2.5: Not supported
  2. 3: Not supported
Resources:
WebKit support bug
Firefox implementation bug
Declarative Shadow DOM - web.dev article
A ponyfill of the Declarative Shadow DOM API