jest.config.json

{
  "transform": {
    "^.+\\.ts$": "ts-jest"
  },
  "collectCoverage": false,
  "collectCoverageFrom": ["src/**/*.ts", "!src/**/*.spec.ts"],
  "notify": true,
  "testEnvironment": "node",
  "testRegex": "/src/.+\\.spec\\.ts$",
  "roots": ["<rootDir>/src"]
}