jest.config.js

const reactNativeJestPreset = require('react-native/jest-preset')
const { defaults: tsjPreset } = require('ts-jest/presets')

module.exports = {
  ...tsjPreset,
  globals: {
    navigator: true,
    'ts-jest': {
      babelConfig: true,
      // Disables type-check when running tests as it takes valuable time
      // and is redundant with the tsc build step
      isolatedModules: true,
      tsconfig: 'tsconfig.test.json',
    },
    window: true,
  },
  haste: {
    ...reactNativeJestPreset.haste,
    defaultPlatform: 'android',
  },
  moduleNameMapper: {
    // Jest isn't able to use the react-native field of package.json and tries to use the main field
    // which then causes other import errors
    'react-native-bip39': '<rootDir>/node_modules/react-native-bip39/src',
    'react-native-svg': '<rootDir>/node_modules/react-native-svg-mock',
    // For some reason jest doesn't pick it up automatically from the __mocks__ folder
    // like the other modules, adding it here fixes it
    'secrets.json': '<rootDir>/__mocks__/secrets.json',
  },
  modulePathIgnorePatterns: ['<rootDir>/node_modules/(.*)/node_modules/react-native'],
  preset: 'react-native',
  setupFilesAfterEnv: [
    '<rootDir>/jest_setup.ts',
    '<rootDir>/node_modules/react-native-gesture-handler/jestSetup.js',
    '@testing-library/jest-native/extend-expect',
  ],
  testPathIgnorePatterns: ['/node_modules/', '<rootDir>/e2e'],
  transform: {
    ...tsjPreset.transform,
    '\\.js$': './node_modules/react-native/jest/preprocessor.js',
    '^.+\\.(txt)$': require.resolve('./node_modules/react-native/jest/assetFileTransformer.js'),
  },
  transformIgnorePatterns: [
    'node_modules/(?!(@celo/)?@?react-native|@react-navigation|@react-native-community|@react-native-firebase|react-navigation|redux-persist|date-fns|victory-*)',
  ],
}