Eslint + Prettier

.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es6: true,
    node: true,
    "react-native/react-native": true
  },
  extends: ["plugin:react/recommended"],
  parserOptions: {
    ecmaFeatures: {
      experimentalObjectRestSpread: true,
      jsx: true
    },
    sourceType: "module"
  },
  plugins: ["react", "react-native"],
  rules: {
    indent: ["error", "tab"],
    "linebreak-style": ["error", "unix"],
    quotes: ["error", "double"],
    semi: ["error", "never"],
    "react-native/no-unused-styles": 2,
    "react-native/split-platform-components": 2,
    "react-native/no-inline-styles": 2
  }
};

package.json

{
  "name": "template",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "react": "16.3.1",
    "react-native": "0.55.4"
  },
  "devDependencies": {
    "babel-jest": "23.0.1",
    "babel-preset-react-native": "4.0.0",
    "eslint": "^4.19.1",
    "eslint-plugin-import": "^2.12.0",
    "eslint-plugin-jsx-a11y": "^6.0.3",
    "eslint-plugin-react": "^7.9.1",
    "eslint-plugin-react-native": "^3.2.1",
    "jest": "23.1.0",
    "prettier": "1.13.5",
    "react-test-renderer": "16.3.1"
  },
  "jest": {
    "preset": "react-native"
  }
}