Generating a JSON Schema for this schema requires a "jsonSchema" annotation

$ bun src/program.ts --watch
295 |   if (Option.isSome(surrogate)) {
296 |     return go(surrogate.value, $defs, handleIdentifier, path, options);
297 |   }
298 |   switch (ast._tag) {
299 |     case "Declaration":
300 |       throw new Error(errors_.getJSONSchemaMissingAnnotationErrorMessage(path, ast));

error: Missing annotation
at path: ["created_at"]
details: Generating a JSON Schema for this schema requires a "jsonSchema" annotation
schema (Declaration): DateFromSelf