.eslintrc

{
  "extends": ["plugin:react/recommended", "airbnb", "prettier"],
  "env": {
    "node": true,
    "jest": true,
    "browser": true,
    "es6": true
  },
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parser": "@babel/eslint-parser",
  "parserOptions": {
    "requireConfigFile": false,
    "ecmaVersion": 2018,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    },
    "babelOptions": {
      "presets": ["@babel/preset-react"],
      "plugins": ["@babel/plugin-proposal-class-properties"]
    }
  },
  "plugins": ["react", "prettier"],
  "rules": {
    "react/jsx-filename-extension": [1, { "extensions": [".jsx"] }],
    "import/no-extraneous-dependencies": [
      "error",
      { "devDependencies": ["**/*.test.js", "**/*.spec.js", "./src/setupTests.js"] }
    ],
    "react/state-in-constructor": "off",
    "react/prop-types": "off",
    "react/require-default-props": "off",
    "react/jsx-props-no-spreading": "off",
    "prettier/prettier": [
      "error",
      {
        "singleQuote": true,
        "parser": "flow"
      }
    ]
  }
}