jest.config.json

{
  "rootDir": ".",
  "transform": {
    "^.+\\.tsx?$": "ts-jest"
  },
  "testRegex": "src/.*\\.test\\.ts$",
  "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json", "node"],
  "coverageReporters": ["json-summary", "text", "lcov"]
}