fix: export the type

Author: amanabiy

src/test-pages-util/index.ts

@@ -2,6 +2,6 @@
 // SPDX-License-Identifier: Apache-2.0
 
 import PermutationsView from "./permutations-view";
-import createPermutations from "./permutations";
+import { createPermutations, ComponentPermutations } from "./permutations";
 
-export { createPermutations, PermutationsView };
+export { createPermutations, PermutationsView, ComponentPermutations };

src/test-pages-util/permutations.tsx

@@ -6,7 +6,7 @@ export type ComponentPermutations<Props> = {
   [prop in keyof Props]: ReadonlyArray<Props[prop]>;
 };
 
-export default function createPermutations<Props>(permutations: Array<ComponentPermutations<Props>>) {
+export function createPermutations<Props>(permutations: Array<ComponentPermutations<Props>>) {
   return flatten(permutations.map(set => doCreatePermutations(set)));
 }