Enforce document structure restrictions in node constructors

Right now there are a few different constraints on the document structure that we enforce in the schema…

• Children of the document must be blocks.
• Children of other nodes can either be all blocks or all inlines and texts.
• etc.

But when created a new node via Block.create or similar, there’s no schema validation. And there’s no indication if you initialize it with an invalid structure. This leads to hard to debug edge cases.

I don’t have a great solution in mind. It seems like we’d need to run the same sorts of checks for the schema on every node creation. If anyone has ideas I’d love to hear them!

[oyeanuj]

@ianstormtaylor +1 to that, would really also help with the developer experience (even if that check was turned off in production mode, sort of like React?)

[ianstormtaylor]

Sorry for not being clear—I think the logic is too much magic, since there are cases where you don’t want it to normalize for you.