.eslintrc

{
  "parser": "babel-eslint",
  "env": {

    # You can change environment depending on the project you are working on
    "browser": true,
    "node": true,
    "commonjs": true,
    "es6": true
  },
  "parserOptions": {

    # If you are using ES5 change ecmaVersion to 5 and comment last block of rules (ECMAScript 6 block)
    "ecmaVersion": 6,
    "ecmaFeatures": {
      "arrowFunctions": true,
      "blockBindings": true,
      "classes": true,
      "defaultParams": true,
      "destructuring": true,
      "forOf": true,
      "generators": false,
      "modules": true,
      "objectLiteralComputedProperties": true,
      "objectLiteralDuplicateProperties": false,
      "objectLiteralShorthandMethods": true,
      "objectLiteralShorthandProperties": true,
      "spread": true,
      "superInFunctions": true,
      "templateStrings": true,
      "jsx": false
    }
  },
  "rules": {

    /**
    * Possible errors
    */

    "comma-dangle": [1, "never"],
    "no-cond-assign": [2, "always"],
    "no-console": 1,
    "no-constant-condition": 1,
    "no-control-regex": 1,
    "no-debugger": 1,
    "no-dupe-args": 1,
    "no-dupe-keys": 1,
    "no-duplicate-case": 2,
    "no-empty": 1,
    "no-empty-character-class": 1,
    "no-ex-assign": 2,
    "no-extra-boolean-cast": 1,
    "no-extra-parens": [2, "functions"],
    "no-extra-semi": 2,
    "no-func-assign": 2,
    "no-inner-declarations": 2,
    "no-invalid-regexp": 2,
    "no-irregular-whitespace": 2,
    "no-negated-in-lhs": 1,
    "no-obj-calls": 2,
    "no-regex-spaces": 2,
    "no-sparse-arrays": 2,
    "no-unexpected-multiline": 2,
    "no-unreachable": 2,
    "use-isnan": 2,
    "valid-jsdoc": 1,
    "valid-typeof": 1,

    /**
    * Best practices
    */

    "accessor-pairs": 1,
    "array-callback-return": 2,
    "block-scoped-var": 2,
    "complexity": 0,
    "consistent-return": 1,
    "curly": [2, "all"],
    "default-case": 2,
    "dot-location": [1, "property"],
    "dot-notation": [2, {
      "allowKeywords": true,
      "allowPattern": "^[a-z]+(_[a-z]+)+$" //
    }],
    "eqeqeq": 2,
    "guard-for-in": 2,
    "no-alert": 1,
    "no-caller": 2,
    "no-case-declarations": 2,
    "no-div-regex": 2,
    "no-else-return": 2,
    "no-empty-function": 1,
    "no-empty-pattern": 2,
    "no-eq-null": 2,
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-extra-label": 0,
    "no-fallthrough": 1,
    "no-floating-decimal": 2,
    "no-implicit-coercion": [2, {
      "number": true,
      "boolean": false
    }],
    "no-implicit-globals": 0,
    "no-implied-eval": 2,
    "no-invalid-this": 0,
    "no-iterator": 2,
    "no-labels": 2,
    "no-lone-blocks": 2,
    "no-loop-func": 2,
    "no-magic-numbers": 0,
    "no-multi-spaces": 2,
    "no-multi-str": 2,
    "no-native-reassign": 2,
    "no-new": 2,
    "no-new-func": 2,
    "no-new-wrappers": 2,
    "no-octal": 2,
    "no-octal-escape": 2,
    "no-param-reassign": [2, {"props": false}],
    "no-proto": 2,
    "no-redeclare": 2,
    "no-return-assign": 2,
    "no-script-url": 2,
    "no-self-assign": 2,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-throw-literal": 2,
    "no-unmodified-loop-condition": 1,
    "no-unused-expressions": 2,
    "no-unused-labels": 2,
    "no-useless-call": 2,
    "no-useless-concat": 1,
    "no-void": 2,
    "no-warning-comments": 0,
    "no-with": 2,
    "radix": 2,
    "vars-on-top": 0,
    "wrap-iife": [2, "inside"],
    "yoda": 2,

    /**
    * Strict Mode
    */

    "strict": 1,

    /**
    * Variables
    */

    "init-declarations": 0,
    "no-catch-shadow": 2,
    "no-delete-var": 2,
    "no-label-var": 0,
    "no-restricted-globals": 0,
    "no-shadow": [1, { "hoist": "all" }],
    "no-shadow-restricted-names": 2,
    "no-undef": 2,
    "no-undef-init": 2,
    "no-undefined": 2,
    "no-unused-vars": [1, {
      "vars": "local",
      "args": "after-used"
    }],
    "no-use-before-define": 2,

    /**
    * Stylistic Issues
    */

    "array-bracket-spacing": [2, "never"],
    "block-spacing": 2,
    "brace-style": [2,
      "1tbs", {
      "allowSingleLine": false
    }],
    "camelcase": [2, {"properties": "always"}],
    "comma-spacing": [2, {"before": false, "after": true}],
    "comma-style": 2,
    "computed-property-spacing": [2, "never"],
    "consistent-this": [1, "self"],
    "eol-last": 2,
    "func-names": 0,
    "func-style": 0,
    "id-blacklist": 0,
    "id-length": 0,
    "id-match": 0,
    "indent": [2, 2],
    "jsx-quotes": 0,
    "key-spacing": [2, {"beforeColon": false, "afterColon": true}],
    "keyword-spacing": 2,
    "linebreak-style": 0,
    "lines-around-comment": [2, { "beforeBlockComment": true, "beforeLineComment": true }],
    "max-depth": 0,
    "max-len": 0,
    "max-nested-callbacks": 0,
    "max-params": 0,
    "max-statements": 0,
    "new-cap": [2, {
      "newIsCap": true
    }],
    "new-parens": 2,
    "newline-after-var": 0,
    "newline-before-return": 0,
    "newline-per-chained-call": 0,
    "no-array-constructor": 2,
    "no-bitwise": 2,
    "no-continue": 0,
    "no-inline-comments": 0,
    "no-lonely-if": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multiple-empty-lines": 0,
    "no-negated-condition": 0,
    "no-nested-ternary": 2,
    "no-new-object": 2,
    "no-plusplus": 0,
    "no-restricted-syntax": 0,
    "no-spaced-func": 2,
    "no-ternary": 0,
    "no-trailing-spaces": [2, {
      "skipBlankLines": true
    }],
    "no-underscore-dangle": 0,
    "no-unneeded-ternary": 2,
    "no-whitespace-before-property": 2,
    "object-curly-spacing": [2, "never"],
    "one-var": [2, "never"],
    "one-var-declaration-per-line": 0,
    "operator-assignment": [2, "always"],
    "operator-linebreak": [2, "before"],
    "padded-blocks": 0,
    "quote-props": [2, "as-needed"],
    "quotes": [2, "single"],
    "require-jsdoc": 0,
    "semi": [2, "always"],
    "semi-spacing": [2, {"before": false, "after": true}],
    "sort-imports": 0,
    "sort-vars": 0,
    "space-before-blocks": 2,
    "space-before-function-paren": [2, "never"],
    "space-in-parens": [2, "never"],
    "space-infix-ops": [2, {"int32Hint": false}],
    "space-unary-ops": 1,
    "spaced-comment": [2, "always"],
    "wrap-regex": 2,

    /**
    * ECMAScript 6
    */

    "arrow-body-style": [2, "as-needed"],
    "arrow-parens": [2, "always"],
    "arrow-spacing": [2, { "before": true, "after": true }],
    "constructor-super": 1,
    "generator-star-spacing": 0,
    "no-class-assign": 2,
    "no-confusing-arrow": 1,
    "no-const-assign": 2,
    "no-dupe-class-members": 2,
    "no-new-symbol": 2,
    "no-this-before-super": 2,
    "no-useless-constructor": 1,
    "no-var": 1,
    "object-shorthand": 1,
    "prefer-arrow-callback": 0,
    "prefer-const": 1,
    "prefer-reflect": 0,
    "prefer-rest-params": 1,
    "prefer-spread": 2,
    "prefer-template": 1,
    "require-yield": 1,
    "template-curly-spacing": [1, "never"],
    "yield-star-spacing": [1, "before"]
  }
}