Is it possible to serialize extensions or schema?

[wernst]

Is it possible to define the schema or used extensions away from the client and have the client consume those?

For example, say I would like to build an app where a user may customize their editor with additional extensions. The JSON representation of their document and their extensions/schema is saved on a server and when requesting their document, the current schema for the document is also sent (so the editor can properly parse the document).

It looks like the editor's schema is determined by the provided extensions (so I cant just plug in the schema directly). Is there a way to serialize the extensions so they can sent from the server and be passed to the editor's constructor?