.eslintrc.json

{
  "env": {
    "es6": true,
    "node": true,
    "browser": true,
    "mocha": true
  },
  "extends": "eslint:recommended",
  "parser": "babel-eslint",
  "parserOptions": {
    "sourceType": "module"
  },
  "rules": {
    "array-bracket-spacing": [2, "never"],
    "arrow-parens": [2, "always"],
    "arrow-spacing": [2, { "before": true, "after": true }],
    "block-spacing": [2, "always"],
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "camelcase": [2, { "properties": "always" }],
    "comma-spacing": [2, { "before": false, "after": true }],
    "computed-property-spacing": [2, "never"],
    "constructor-super": [2],
    "func-style": [2, "expression", { "allowArrowFunctions": true }],
    "generator-star-spacing": [2, { "before": false, "after": true }],
    "indent": [2, 2],
    "jsx-quotes": [2, "prefer-double"],
    "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
    "keyword-spacing": [2, { "before": true, "after": true }],
    "linebreak-style": [2, "unix"],
    "max-len": [2, 120, 2],
    "no-array-constructor": [2],
    "no-bitwise": [2],
    "no-class-assign": [2],
    "no-const-assign": [2],
    "no-const-assign": [2],
    "no-constant-condition": [2],
    "no-dupe-class-members": [2],
    "no-lonely-if": [2],
    "no-multiple-empty-lines": [2, { "max": 1, "maxEOF": 1 }],
    "no-negated-condition": [2],
    "no-nested-ternary": [2],
    "no-new-object": [2],
    "no-plusplus": [2],
    "no-restricted-syntax": [2, "WithStatement"],
    "no-spaced-func": [2],
    "no-this-before-super": [2],
    "no-trailing-spaces": [2],
    "no-unused-vars": [2, { "vars": "all", "args": "after-used", "varsIgnorePattern": "React" }],
    "no-var": [2],
    "object-curly-spacing": [2, "always"],
    "object-shorthand": [2],
    "one-var": [2, "never"],
    "operator-assignment": [2, "always"],
    "operator-linebreak": [2, "after"],
    "padded-blocks": [2, "never"],
    "prefer-arrow-callback": [2],
    "prefer-const": [2],
    "prefer-spread": [2],
    "prefer-template": [2],
    "quote-props": [2, "as-needed"],
    "quotes": [2, "double"],
    "require-yield": [2],
    "semi": [2, "never"],
    "space-before-blocks": [2, "always"],
    "space-before-function-paren": [2, "never"],
    "space-in-parens": [2, "never"],
    "space-unary-ops": [2, { "words": true, "nonwords": false }]
  }
}