test: add browser-only component example

Author: hi-ogawa

packages/plugin-rsc/examples/basic/vite.config.ts

@@ -23,6 +23,7 @@ export default defineConfig({
     tailwindcss(),
     react(),
     vitePluginUseCache(),
+    vitePluginBrowserOnly(),
     rsc({
       entries: {
         client: './src/client.tsx',
@@ -176,3 +177,18 @@ function vitePluginUseCache(): Plugin[] {
     },
   ]
 }
+
+function vitePluginBrowserOnly(): Plugin[] {
+  return [
+    {
+      name: 'browser-only-component',
+      load(id: string) {
+        if (id.endsWith('?browser-only')) {
+          this.environment.name === 'ssr'
+          this.environment.name === 'rsc'
+          this.environment.name === 'client'
+        }
+      },
+    },
+  ]
+}