jest config for TypeScript

package.json

{
  "jest": {
    "testEnvironment": "node",
    "transform": {
      "^.+\\.ts$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
    },
    "testRegex": "test/.*\\.(ts)$",
    "modulePaths": ["<rootDir>/src"],
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js",
      "json"
    ],
    "collectCoverage": true,
    "collectCoverageFrom": [
       "src/**/*.ts",
       "!src/types/*.ts"
    ],
    "coverageReporters": [
      "html",
      "text",
      "text-summary"
    ],
    "coverageThreshold": {
      "global": {
        "branches": 90,
        "functions": 90,
        "lines": 90,
        "statements": 90
      }
    },
    "mapCoverage": true
  }
}