foo.json

{
  "scripts": {
    "test": "jest"
  },
  "lint-staged": {
    "*.js": [
      "prettier --write",
      "git add"
    ]
  },
  "husky": {
    "hooks": {
      "pre-commit": "lint-staged",
      "pre-push": "npm run test"
    }
  },
  "devDependencies": {
    "husky": "^3.0.4",
    "jest": "^24.9.0",
    "lint-staged": "^9.2.5",
    "prettier": "^1.18.2"
  }
}