jest.config.json

{
    "rootDir": "./",
    "globals": {
      "__DEV__": true,
      "__PROD__": false
    },
    "testEnvironment": "node",
    "preset": "ts-jest",
    "verbose": true,
    "bail": false,
    "detectOpenHandles": false,
    "moduleDirectories": [
      "node_modules",
      "src",
      "test"
    ],
    "moduleFileExtensions": [
      "js",
      "json",
      "ts"
    ],
    "testMatch": [
      "**/test/**/*.test.ts?(x)"
    ],
    "testPathIgnorePatterns": [
      "node_modules/",
      "dist/",
      ".json"
    ],
    "transform": {
      "^.+\\.(t|j)s$": [
        "ts-jest",
        {
          "tsconfig": "test/tsconfig.test.json"
        }
      ]
    },
    "collectCoverageFrom": [
      "**/*.(t|j)s"
    ],
    "coverageDirectory": "../coverage",
    "coverageThreshold": {
      "global": {
        "branches": 80,
        "functions": 80,
        "lines": 50,
        "statements": -10
      }
    }
  }