jest.config.js

module.exports = {
  collectCoverageFrom: ["src/**/*.{js,jsx,ts,tsx}", "!src/**/*.d.ts"],
  resolver: "jest-pnp-resolver",
  setupFiles: ["react-app-polyfill/jsdom"],
  setupTestFrameworkScriptFile: "<rootDir>/src/setupTests.ts",
  testMatch: [
    "<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}",
    "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,ts,tsx}"
  ],
  testEnvironment: "jsdom",
  testURL: "http://localhost",
  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)$"
  ],
  moduleNameMapper: {
    "^react-native$": "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"
  ]
};