jestSetup.js

// Use with React Native <= 0.63
// jest.mock('react-native/Libraries/Animated/src/NativeAnimatedHelper');

// Use this instead with React Native >= 0.64
jest.mock('react-native/Libraries/Animated/NativeAnimatedHelper');

jest.mock('react-native-reanimated', () => {
  const Reanimated = require('react-native-reanimated/mock');

  // The mock for `call` immediately calls the callback which is incorrect
  // So we override it with a no-op
  Reanimated.default.call = () => {};

  return Reanimated;
});

// With this done, you'll have fetch and fetchMock available on the global scope.
// Fetch will be used as usual by your code and you'll use fetchMock in your tests.
require('jest-fetch-mock').enableMocks();
require('jest-fetch-mock').enableFetchMocks();

import mockAsyncStorage from '@react-native-async-storage/async-storage/jest/async-storage-mock';
jest.mock('@react-native-async-storage/async-storage', () => mockAsyncStorage);