jest.config.js

module.exports = {
  collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}', '!src/**/*.d.ts', '!src/serviceWorker.js'],
  setupFiles: ['react-app-polyfill/jsdom', '<rootDir>/config/jest.setup.js'],
  setupFilesAfterEnv: ['<rootDir>/config/enzyme.setup.js'],
  testMatch: ['<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}', '<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}'],
  testEnvironment: 'jest-environment-jsdom-fourteen',
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': '<rootDir>/node_modules/babel-jest',
    // '^.+\\.css$': '<rootDir>/config/jest/cssTransform.js',
    // '^(?!.*\\.(js|jsx|ts|tsx|css|json)$)': '<rootDir>/config/jest/fileTransform.js',
  },
  transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$', '^.+\\.module\\.(css|sass|scss)$'],
  modulePaths: [],
  moduleNameMapper: {
    '^react-native$': 'react-native-web',
    '^.+\\.module\\.(css|sass|scss)$': 'identity-obj-proxy',
  },
  moduleFileExtensions: ['web.js', 'js', 'web.ts', 'ts', 'web.tsx', 'tsx', 'json', 'web.jsx', 'jsx', 'node'],
  watchPlugins: ['jest-watch-typeahead/filename', 'jest-watch-typeahead/testname'],
};