jest.config.js

module.exports = {
  collectCoverageFrom: ['src/**/*.{js,jsx}'],
  setupFiles: [
    '<rootDir>/config/polyfills.js',
    '<rootDir>/config/animationShim.js',
  ],
  testMatch: [
    '<rootDir>/src/**/__tests__/**/*.js?(x)',
    '<rootDir>/src/**/?(*.)(spec|test).js?(x)',
  ],
  testPathIgnorePatterns: ['/__data__/'],
  testEnvironment: 'node',
  testURL: 'http://localhost',
  transform: {
    '^.+\\.(js|jsx)$': '<rootDir>/node_modules/babel-jest',
    '^.+\\.css$': '<rootDir>/config/jest/cssTransform.js',
    '^(?!.*\\.(js|jsx|css|json)$)': '<rootDir>/config/jest/fileTransform.js',
  },
  transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(js|jsx)$'],
  moduleNameMapper: {
    '^react-native$': 'react-native-web',
  },
  moduleFileExtensions: ['web.js', 'js', 'json', 'web.jsx', 'jsx', 'node'],
}