.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": "eslint:recommended",
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "jsx": true,
    "sourceType": "module"
  },
  "plugins": [
  ],
  "rules": {
    "comma-dangle": [1, "always-multiline"],
    "no-cond-assign": 2,
    "no-console": 2,
    "no-constant-condition": 2,
    "no-control-regex": 2,
    "no-debugger": 2,
    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-empty-character-class": 2,
    "no-empty": 2,
    "no-ex-assign": 2,
    "no-extra-boolean-cast": 2,
    "no-extra-parens": 0,
    "no-extra-semi": 2,
    "no-func-assign": 2,
    "no-inner-declarations": 2,
    "no-invalid-regexp": 2,
    "no-irregular-whitespace": 2,
    "no-negated-in-lhs": 2,
    "no-obj-calls": 2,
    "no-regex-spaces": 2,
    "no-sparse-arrays": 2,
    "no-unreachable": 2,
    "use-isnan": 2,
    "valid-jsdoc": 1,
    "valid-typeof": 2,
    "no-unexpected-multiline": 1,
    "dot-notation": 1,
    "eqeqeq": 1,
    "no-alert": 2,
    "no-caller": 2,
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-native-reassign": 2,
    "no-new-func": 2,
    "no-new-wrappers": 2,
    "no-redeclare": 2,
    "no-throw-literal": 2,
    "no-with": 2,
    "radix": 2,
    "no-shadow": 2,
    "no-unused-vars": [2, { "varsIgnorePattern": "^_" }],
    "no-use-before-define": 1,
    "quotes": [2, "single", "avoid-escape"],
    "jsx-quotes": [1, "prefer-single"],
    "no-var": 2,
    "prefer-const": 1
  }
}