What happened?

Since you introduced async transformers, transform now actually returns a MaybePromise<RenderableTreeNodes> from what i can tell.

Meanwhile, the exported transform function defines its return type as RenderableTreeNode (or RenderableTreeNode[])

We should probably update the exported function to match, otherwise we can't await the result without casting.

To reproduce

In a typescript project, try await Markdoc.transform(...) with an async transformer in your config. it'll work at runtime but will fail to build

Version

latest

Additional context

No response