.eslintrc.json

{
  "root": true,
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": ["eslint:recommended", "plugin:react/recommended"],
  "parserOptions": {
    "ecmaVersion": "latest",
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "globals": {
    "process": false
  },
  "settings": {
    "react": { "version": "detect" }
  },
  "plugins": ["react"],
  "ignorePatterns": ["dist/**/*", "lib/**/*", "storybook-static/**/*", "public/**/*"],
  "rules": {
    "arrow-parens": 2,
    "arrow-spacing": 2,
    "brace-style": [2, "1tbs", { "allowSingleLine": false }],
    "callback-return": 2,
    "camelcase": 1,
    "comma-spacing": 1,
    "curly": [2, "multi-line"],
    "dot-notation": [2, { "allowKeywords": true }],
    "eol-last": 2,
    "eqeqeq": 2,
    "handle-callback-err": 2,
    "key-spacing": [1, { "beforeColon": false, "afterColon": true }],
    "keyword-spacing": 1,
    "new-cap": 2,
    "new-parens": 1,
    "no-alert": 2,
    "no-array-constructor": 2,
    "no-caller": 2,
    "no-catch-shadow": 2,
    "no-console": 2,
    "no-duplicate-imports": 1,
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-extra-parens": [1, "functions"],
    "no-implied-eval": 2,
    "no-iterator": 2,
    "no-label-var": 2,
    "no-labels": 2,
    "no-lone-blocks": 2,
    "no-loop-func": 2,
    "no-multi-spaces": 1,
    "no-multi-str": 2,
    "no-multiple-empty-lines": 1,
    "no-native-reassign": 2,
    "no-new": 2,
    "no-new-func": 2,
    "no-new-object": 2,
    "no-new-symbol": 2,
    "no-new-wrappers": 2,
    "no-octal-escape": 2,
    "no-path-concat": 2,
    "no-process-exit": 2,
    "no-proto": 2,
    "no-prototype-builtins": 0,
    "no-return-assign": 2,
    "no-script-url": 2,
    "no-sequences": 2,
    "no-shadow": 2,
    "no-shadow-restricted-names": 2,
    "no-spaced-func": 2,
    "no-trailing-spaces": 1,
    "no-underscore-dangle": 0,
    "no-unused-expressions": 2,
    "no-use-before-define": [2, "nofunc"],
    "no-var": 2,
    "no-with": 2,
    "prefer-arrow-callback": 2,
    "prefer-const": ["error", { "destructuring": "all" }],
    "prefer-template": 1,
    "quotes": [1, "double"],
    "semi": [2, "always"],
    "semi-spacing": [1, { "before": false, "after": true }],
    "sort-imports": ["error", { "ignoreCase": true, "allowSeparatedGroups": true }],
    "space-before-blocks": 1,
    "space-before-function-paren": [1, { "anonymous": "always", "named": "never" }],
    "space-infix-ops": 1,
    "space-unary-ops": [1, { "words": true, "nonwords": false }],
    "strict": [2, "global"],
    "yoda": [1, "never"],
    "react/prop-types": "warn",
    "react/display-name": "warn"
  },
  "overrides": [
    {
      "files": ["./*.js"],
      "env": {
        "node": true
      },
      "globals": { "fetchMock": false, "jest": false },
      "rules": {}
    },
    {
      "files": ["src/**/*.test.js", "src/**/*.test.jsx"],
      "globals": {
        "expect": false,
        "describe": false,
        "it": false,
        "afterEach": false,
        "test": false,
        "beforeAll": false,
        "beforeEach": false,
        "jest": false
      },
      "rules": {}
    }
  ]
}