jest.config.js

module.exports = {
  roots: ['<rootDir>/src'],
  collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}', '!src/**/*.d.ts'],
  setupFiles: ['react-app-polyfill/jsdom'],
  setupFilesAfterEnv: ['<rootDir>/src/setupTests.ts'],
  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)$': '<rootDir>/node_modules/babel-jest',
    '^.+\\.(scss|css)$': '<rootDir>/config/jest/cssTransform.js',
    '^(?!.*\\.(js|jsx|ts|tsx|css|scss|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)$': 'identity-obj-proxy',
    '^@actions(.*)$': '<rootDir>/src/actions$1',
    '^@apis(.*)$': '<rootDir>/src/apis$1',
    '^@assets(.*)$': '<rootDir>/src/assets$1',
    '^@components(.*)$': '<rootDir>/src/components$1',
    '^@constants(.*)$': '<rootDir>/src/constants$1',
    '^@hocs(.*)$': '<rootDir>/src/hocs$1',
    '^@hooks(.*)$': '<rootDir>/src/hooks$1',
    '^@layouts(.*)$': '<rootDir>/src/layouts$1',
    '^@models(.*)$': '<rootDir>/src/models$1',
    '^@pages(.*)$': '<rootDir>/src/pages$1',
    '^@reducers(.*)$': '<rootDir>/src/reducers$1',
    '^@sagas(.*)$': '<rootDir>/src/sagas$1',
    '^@stores(.*)$': '<rootDir>/src/stores$1',
    '^@styles(.*)$': '<rootDir>/src/styles$1',
    '^@utils(.*)$': '<rootDir>/src/utils$1',
  },
  moduleFileExtensions: [
    'web.js',
    'js',
    'web.ts',
    'ts',
    'web.tsx',
    'tsx',
    'json',
    'web.jsx',
    'jsx',
    'node',
  ],
  watchPlugins: [
    'jest-watch-typeahead/filename',
    'jest-watch-typeahead/testname',
  ],
};