Await an act in generateSnapshots to resolve warnings

packages/story-utils/src/generateSnapshots.ts

@@ -2,6 +2,7 @@ import { render, RenderResult } from '@testing-library/react';
 import { getStoriesFromStoryFileExports } from './getStories';
 import type { StoryData, StoryFileExports } from './getStories';
 import prepareStory from './prepareStory';
+import wait from './wait';
 
 type TestOptions<Args> = {
   /**

packages/story-utils/src/index.ts

@@ -1,3 +1,4 @@
 export { default as generateSnapshots } from './generateSnapshots';
 export { default as getStories } from './getStories';
 export { default as prepareStory } from './prepareStory';
+export { default as wait } from './wait';

packages/story-utils/src/wait.ts

@@ -0,0 +1,9 @@
+import { act } from '@testing-library/react';
+
+export default async function wait(ms = 0) {
+  await act(() => {
+    return new Promise((resolve) => {
+      setTimeout(resolve, ms);
+    });
+  });
+}