diff --git a/src/types.test.ts b/src/types.test.ts
new file mode 100644
index 0000000..51d8034
--- /dev/null
+++ b/src/types.test.ts
@@ -0,0 +1,29 @@
+import type { ChoicesOptions, ObjectOptions } from "./types";
+
+const objectOptions = {
+  fields: [],
+  helpText: "Optional help text.",
+} satisfies ObjectOptions;
+
+const choicesOptions = {
+  choices: ["One", "Two"],
+  multiple: true,
+} satisfies ChoicesOptions;
+
+void objectOptions;
+void choicesOptions;
+
+const unsupportedObjectOptions = {
+  fields: [],
+  // @ts-expect-error Unsupported object UI state is not part of the public options type.
+  collapsed: true,
+} satisfies ObjectOptions;
+
+const unsupportedChoicesOptions = {
+  choices: ["One", "Two"],
+  // @ts-expect-error Unsupported choices presentation UI is not part of the public options type.
+  presentation: "toggle",
+} satisfies ChoicesOptions;
+
+void unsupportedObjectOptions;
+void unsupportedChoicesOptions;
diff --git a/src/types.ts b/src/types.ts
index 7a6c6c7..f542d2d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -28,7 +28,6 @@ export type FieldsSubField = {
 
 export type ObjectOptions = {
   fields: FieldsSubField[];
-  collapsed?: boolean;
   helpText?: string;
 };
 
@@ -68,7 +67,6 @@ export type ChoicesOptions = {
   choices?: FieldsChoice[] | string[];
   options?: FieldsChoice[] | string[];
   multiple?: boolean;
-  presentation?: "radio" | "checkbox" | "toggle";
   orientation?: "vertical" | "horizontal";
   columns?: number;
   helpText?: string;