.eslintrc.json

{
  "extends": [
    "@react-native-community"
  ],
  "root": true,
  "settings": {
    "react": { "version": "16" },
    "flowtype": {
      "onlyFilesWithFlowAnnotation": true
    }
  },
  "env": { "browser": true, "node": true, "es6": true, "jest": false },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2016,
    "sourceType": "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "impliedStrict": true,
      "globalReturn": false,
      "jsx": true
    }
  },
  "globals": {
    "beforeEach": false,
    "jasmine": false,
    "afterAll": false,
    "beforeAll": false,
    "device": false,
    "element": false,
    "by": false,
    "jest": false,
    "fetch": false,
    "alert": false,
    "describe": false,
    "expect": false,
    "it": false,
    "XMLHttpRequest": false,
    "__DEV__": false
  },
  "rules": {
    "no-var": "error",
    "no-console": "warn",
    "strict": "error",
    "comma-dangle": "off",
    "no-alert": "warn",
    "no-unused-vars": "warn",
    "flowtype/no-types-missing-file-annotation": "off",
    "@typescript-eslint/no-unused-vars": "warn"
  }
}