jestconfig.json

{
  "moduleDirectories": [
    "node_modules",
    "src"
  ],
  "moduleFileExtensions": [
    "ts",
    "tsx",
    "js"
  ],
  "moduleNameMapper": {
    "\\.(css|scss)$": "identity-obj-proxy"
  },
  "transform": {
    ".(ts|tsx)": "<rootDir>/node_modules/ts-jest/preprocessor.js"
  },
  "testResultsProcessor": "<rootDir>/node_modules/ts-jest/coverageprocessor.js",
  "coveragePathIgnorePatterns": ["node_modules", "__tests__"],
  "collectCoverageFrom": ["src/**/*.{ts,tsx}", "!src/**/*.d.ts"],
  "snapshotSerializers": [
    "enzyme-to-json/serializer"
  ],
  "testRegex": "__tests__/.*\\.test\\.(ts|tsx|js)$",
  "setupTestFrameworkScriptFile": "<rootDir>/enzyme-react-16-config.js",
  "globals": {
    "__TS_CONFIG__": "<rootDir>/tsconfig.json"
  }
}