fix workaround by @hi-ogawa

README.md

@@ -1,7 +1,14 @@
+__FIXED__ : workaround in `vite.config.js` by @hi-ogawa 
+
 This repo shows an error while testing SWR on Preact with Vitest
 
 TypeError: Cannot read properties of null (reading 'useContext')
 
 `pnpm dev` working site
 
-`pnpm vitest` not working test
+`pnpm vitest` not working test
+
+Issues follow up :  
+[Issue in Vitest repo](https://github.com/vitest-dev/vitest/issues/5915)  
+[Issue in Preact repo](https://github.com/preactjs/preset-vite/issues/124)  
+[Issue in SWR repo](https://github.com/vercel/swr/issues/2981)

src/comp.test.jsx

@@ -1,4 +1,4 @@
-import { render, screen } from '@testing-library/preact';
+import { render, screen, waitFor } from '@testing-library/preact';
 import { Comp } from './comp';
 import { describe, it, expect, afterAll, beforeAll, afterEach } from 'vitest';
 import { SWRConfig } from 'swr';
@@ -16,7 +16,7 @@ describe('Comp', () => {
   afterAll(() => server.close())
   afterEach(() => server.resetHandlers())
 
-  it('should render', () => {
+  it('should render', async () => {
     render(
       <SWRConfig value={{
         dedupingInterval: 2000,
@@ -25,6 +25,9 @@ describe('Comp', () => {
         <Comp />
       </SWRConfig>
     );
-    expect(screen.getByText('working')).toBeTruthy();
+
+    await waitFor(() => {
+      expect(screen.getByText('working')).toBeTruthy();
+    })
   });
 });

vite.config.js

@@ -7,5 +7,13 @@ export default defineConfig({
   test: {
     globals: true,
     environment: 'jsdom',
+    deps: {
+      optimizer: {
+        web: {
+          enabled: true,
+          include: ['swr', 'use-sync-external-store'],
+        },
+      },
+    },
   }
 });