Precommit hook with husky + lint-staged

prettier-husky-lint-staged-example-package.json

{
  "devDependencies": {
    "husky": "^1.3.1",
    "prettier": "^1.16.4",
  },
  "husky": {
    "hooks": {
      "pre-commit": "lint-staged"
    }
  },
  "lint-staged": {
    "*.{ts,tsx,css,js,scss,html,yml,md,json}": [
      "yarn run prettier --write",
      "git add"
    ]
  },
}