.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:flowtype/recommended",
    "plugin:react/recommended"
  ],
  "globals": {
    "afterAll": true,
    "afterEach": true,
    "beforeAll": true,
    "beforeEach": true,
    "describe": true,
    "document": true,
    "expect": true,
    "global": true,
    "jest": true,
    "module": true,
    "MouseEvent": true,
    "Promise": true,
    "require": true,
    "setTimeout": true,
    "test": true,
    "window": true
  },
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "plugins": [
    "react",
    "flowtype"
  ],
  "rules": {
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1,
        "ignoredNodes": ["ConditionalExpression"] // ternary expression
      }
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "object-curly-spacing": [
      1,
      "always"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
      "error",
      "always"
    ],
    "no-console": 0,
    "react/jsx-uses-vars": "error"
  },
  "settings": {
    "react": {
      "pragma": "React",
      "version": "detect",
      "flowVersion": "0.92"
    }
  }
}