Default values should be serialized and sent across Block Renderer to the front end.

[mrpritchett]

Is your feature request related to a problem? Please describe.
Creating defaults is something that I love about the Gutenberg attribute definitions. Declaring them with a block that uses serversiderender allows those defaults to be seen in the editor, but not on the front end. Why wouldn't we want to use custom-built defaults on the front end?

Describe the solution you'd like
Let default values be serialized and sent to the front end for server-side rendered blocks.

[jorgefilipecosta]

This issue gets solved as soon as Server-side awareness of block types is implemented #2751. The implementation will allow the front end to know the default values of the attributes.

[skorasaurus]

Is this now unblocked because of #21065 ?

[jorgefilipecosta]

Closing this issue, as now we have a mechanism for server-side awareness of blocks and API's to retrieve metadata like default attributes on the server.