jest.config.js

module.exports = {
  roots: ['<rootDir>/src', '<rootDir>/test'],
  collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}','test/**/*.{js,jsx,ts,tsx}', '!src/**/*.d.ts'],
  setupFiles: ['react-app-polyfill/jsdom'],
  setupFilesAfterEnv: ['<rootDir>/test/setup.js'],
  testMatch: [
    '<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}',
    '<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}',
    '<rootDir>/test/**/__tests__/**/*.{js,jsx,ts,tsx}',
    '<rootDir>/test/**/*.{spec,test}.{js,jsx,ts,tsx}',
  ],
  testEnvironment: 'jsdom',
  transform: {
    '^.+\\.(js|jsx|mjs|cjs|ts|tsx)$': '<rootDir>/config/jest/babelTransform.js',
    '^.+\\.css$': '<rootDir>/config/jest/cssTransform.js',
    '^(?!.*\\.(js|jsx|mjs|cjs|ts|tsx|css|json)$)':
      '<rootDir>/config/jest/fileTransform.js',
  },
  transformIgnorePatterns: [
    '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|cjs|ts|tsx)$',
    '^.+\\.module\\.(css|sass|scss)$',
  ],
  modulePaths: [],
  moduleNameMapper: {
    '^react-native$': 'react-native-web',
    '^.+\\.module\\.(css|sass|scss)$': 'identity-obj-proxy',
    '^@/(.*)$': '<rootDir>/src/$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',
  ],
  reporters: [
    'default',
    [
      '<rootDir>/index.js',
      {
        publicPath: './html-report',
        filename: 'report.html',
        enableMergeData: true,
        dataMergeLevel: 2,
        openReport: true,
        inlineSource: true,
        darkTheme: true,
        stripSkippedTest: true,
      },
    ],
  ],
};