Runtime Error: "fields" Property Access on Undefined IJsonSchema

Effect seems to think everything is fine, but during the runtime I get some errors. Can anyone spot or help me figure out why I'm getting them?
TypeError: can't access property "fields", shared_js_1.IJsonSchema is undefined

https://effect.website/play#ab30aaa0c3c3
My initial gut instinct is that I'm creating an import loop, but I feel like TypeScript would have caught that earlier if that was the issue.
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