lint-staged-example.js

// package.json
{

  "devDependencies": {
    "eslint": "4.9.0",
    "eslint-config-airbnb-base": "9.0.0",
    "eslint-plugin-import": "2.0.1",
    "git-validate": "2.2.4",
    "lint-staged": "^8.1.7",
    "prettier-eslint-cli": "^4.7.1"
  },
  "scripts": {
    "test:unit": "mocha app/**/*.js",
    "lint-staged": "lint-staged" // se fosse o husky não precisaria disso, dava pra chamar o cli direto
  },
  "pre-commit": [
    "lint-staged"
  ],
  "pre-push": [
    "test:unit"
  ]
}

// .lintstagedrc
{
  "*.js": [
    "eslint --fix",
    "prettier-eslint --write",
    "git add"
  ]
}