attempts to add some additional testing

App.tsx

@@ -12,7 +12,7 @@ import useAuth from './src/hooks/useAuth'
 /**
  * Determines visibility of features based on user authentication.
  */
-function AppNavigation(): ReactElement {
+export function AppNavigation(): ReactElement {
   const { session } = useAuth()
   return ( session && session.user ? <AppStack /> : <AuthStack /> )
 }

__mocks__/@react-native-async-storage/async-storage.js

@@ -0,0 +1,11 @@
+// __mocks__/@react-native-async-storage/async-storage.js
+import { jest } from '@jest/globals'
+
+const mockAsyncStorage = {
+  getItem: jest.fn( () => Promise.resolve( null ) ),
+  setItem: jest.fn( () => Promise.resolve() ),
+  removeItem: jest.fn( () => Promise.resolve() ),
+  clear: jest.fn( () => Promise.resolve() ),
+}
+
+export default mockAsyncStorage

babel.config.js

@@ -1,11 +1,13 @@
-function config( api ) {
+module.exports = ( api ) => {
   api.cache( true )
   return {
     presets: [
       'babel-preset-expo',
       '@babel/preset-typescript',
+      '@babel/preset-react',
+    ],
+    plugins: [
+      '@babel/plugin-transform-runtime',
     ],
   }
 }
-
-module.exports = config

jest.config.js

@@ -1,18 +1,9 @@
 module.exports = {
   preset: 'jest-expo',
-  setupFilesAfterEnv: ['@testing-library/jest-native/extend-expect'],
   transform: {
-    '^.+\\.tsx?$': [ 'ts-jest', {
-      jsx: 'react',
-      module: 'commonjs',
-      target: 'es6',
-      strict: true,
-      esModuleInterop: true,
-      skipLibCheck: true,
-      forceConsistentCasingInFileNames: true,
-      types: [ 'jest', 'node' ],
-    } ],
+    '^.+\\.tsx?$': ['babel-jest'],
   },
   testPathIgnorePatterns: [ '/node_modules/', '/android/', '/ios/' ],
-  testEnvironment: 'node',
+  testEnvironment: 'jsdom',
+  moduleFileExtensions: [ 'js', 'jsx', 'ts', 'tsx' ],
 }