.eslintrc.json

{
  "extends": [
    "plugin:flowtype/recommended",
    "plugin:react/recommended",
    "prettier",
    "prettier/flowtype",
    "prettier/react",
    "prettier/standard",
    "standard"
  ],
  "plugins": [
    "flowtype",
    "prettier",
    "react-native",
    "react",
    "standard"
  ],
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "env": {
    "es6": true,
    "node": true,
    "react-native/react-native": true
  },
  "rules": {
    "no-return-assign": 2,
    "consistent-return": 2,
    "comma-dangle": [2, "always-multiline"],
    "no-extra-semi": 0,
    "semi": 0,
    "space-before-function-paren": 0,
    "prettier/prettier": [
      "error",
      {
        "singleQuote": true,
        "parser": "flow",
        "trailingComma": "all"
      }
    ],
    "import/no-duplicates": 2,
    "import/imports-first": 2,
    "import/newline-after-import": 0,
    "import/first": 0,
    "react-native/no-unused-styles": 2,
    "react-native/split-platform-components": 2,
    "flowtype/require-return-type": [
      1,
      "always",
      {
        "annotateUndefined": "never",
        "excludeArrowFunctions": "expressionsOnly"
      }
    ]
  },
  "settings": {
    "flowtype": {
      "onlyFilesWithFlowAnnotation": true
    },
    "react": {
      "pragma": "React",
      "version": "16.5",
      "flowVersion": "0.78"
    }
  }
}