fix(expo): Load SSO deps via require() to fix Metro async-chunk failure

Author: wobsoriano

.changeset/expo-sso-sync-require.md

@@ -0,0 +1,5 @@
+---
+'@clerk/expo': patch
+---
+
+Load `expo-auth-session` and `expo-web-browser` in `useSSO` via synchronous `require()` instead of dynamic `import()`, which fails to resolve under Metro when `@expo/metro-runtime` is not set up at the app entry.

packages/expo/src/hooks/useSSO.ts

@@ -47,17 +47,22 @@ export function useSSO() {
       };
     }
 
-    // Dynamically import expo-auth-session and expo-web-browser only when needed
-    // eslint-disable-next-line @typescript-eslint/consistent-type-imports -- dynamic import of optional dependency
+    // Load via synchronous require() instead of import(): Metro inlines require() into the main
+    // bundle, while import() emits an async chunk that fails to resolve without @expo/metro-runtime.
+    // eslint-disable-next-line @typescript-eslint/consistent-type-imports -- type-only annotation for optional dependency
     let AuthSession: typeof import('expo-auth-session');
-    // eslint-disable-next-line @typescript-eslint/consistent-type-imports -- dynamic import of optional dependency
+    // eslint-disable-next-line @typescript-eslint/consistent-type-imports -- type-only annotation for optional dependency
     let WebBrowserModule: typeof import('expo-web-browser');
     try {
-      [AuthSession, WebBrowserModule] = await Promise.all([import('expo-auth-session'), import('expo-web-browser')]);
-    } catch {
+      // eslint-disable-next-line @typescript-eslint/no-require-imports
+      AuthSession = require('expo-auth-session');
+      // eslint-disable-next-line @typescript-eslint/no-require-imports
+      WebBrowserModule = require('expo-web-browser');
+    } catch (err) {
       return errorThrower.throw(
-        'expo-auth-session and expo-web-browser are required for SSO. ' +
-          'Install them: npx expo install expo-auth-session expo-web-browser',
+        'Unable to load expo-auth-session and expo-web-browser, which are required for SSO. ' +
+          'If they are not installed, run: npx expo install expo-auth-session expo-web-browser. ' +
+          `Original error: ${err instanceof Error ? err.message : String(err)}`,
       );
     }