.eslintrc

{
  "plugins": [
    "import"
  ],
  "settings": {
    "import/extensions": [".js"]
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "env": {
    "browser": true,
    "es6": true,
    "mocha": true,
    "node": true
  },
  "rules": {
    "arrow-parens": ["error", "as-needed", { "requireForBlockBody": true }],
    "arrow-spacing": "error",
    "block-spacing": "error",
    "comma-dangle": ["error", "only-multiline"],
    "comma-spacing": ["error", { "before": false, "after": true }],
    "comma-style": ["error", "last"],
    "computed-property-spacing": ["error", "never"],
    "constructor-super": "error",
    "curly": ["error", "multi-line"],
    "dot-location": ["error", "property"],
    "dot-notation": ["error", { "allowKeywords": true }],
    "eol-last": "error",
    "eqeqeq": ["error", "smart"],
    "func-call-spacing": ["error", "never"],
    "import/default": "error",
    "import/export": "error",
    "import/first": "error",
    "import/named": "error",
    "import/namespace": "error",
    "import/newline-after-import": "error",
    "import/no-deprecated": "error",
    "import/no-extraneous-dependencies": ["error", { "peerDependencies": true }],
    "import/no-mutable-exports": "error",
    "import/no-named-as-default": "error",
    "import/no-named-as-default-member": "error",
    "import/no-unresolved": "error",
    "indent": ["error", 2, { "SwitchCase": 1, "MemberExpression": 1 }],
    "key-spacing": ["error", { "beforeColon": false, "afterColon": true }],
    "keyword-spacing": ["error", { "before": true, "after": true }],
    "linebreak-style": "error",
    "lines-around-comment": ["error", { "beforeBlockComment": true, "afterBlockComment": true, "allowBlockStart": true, "allowObjectStart": true, "allowArrayStart": true }],
    "new-parens": "error",
    "no-array-constructor": "error",
    "no-class-assign": "error",
    "no-console": "error",
    "no-const-assign": "error",
    "no-debugger": "error",
    "no-dupe-args": "error",
    "no-dupe-class-members": "error",
    "no-dupe-keys": "error",
    "no-duplicate-case": "error",
    "no-empty": "error",
    "no-empty-character-class": "error",
    "no-empty-pattern": "error",
    "no-ex-assign": "error",
    "no-extend-native": "error",
    "no-extra-boolean-cast": "error",
    "no-func-assign": "error",
    "no-invalid-regexp": "error",
    "no-lonely-if": "error",
    "no-mixed-spaces-and-tabs": ["error", false],
    "no-multi-spaces": "error",
    "no-multiple-empty-lines": ["error", { "max": 2, "maxEOF": 1 }],
    "no-native-reassign": "error",
    "no-negated-in-lhs": "error",
    "no-new-object": "error",
    "no-new-symbol": "error",
    "no-path-concat": "error",
    "no-redeclare": "error",
    "no-regex-spaces": "error",
    "no-sequences": "error",
    "no-shadow": "error",
    "no-shadow-restricted-names": "error",
    "no-spaced-func": "error",
    "no-tabs": "error",
    "no-this-before-super": "error",
    "no-throw-literal": "error",
    "no-trailing-spaces": "error",
    "no-undef": "error",
    "no-unneeded-ternary": "error",
    "no-unreachable": "error",
    "no-unsafe-finally": "error",
    "no-unsafe-negation": "error",
    "no-unused-expressions": "error",
    "no-unused-vars": ["error", { "vars": "all", "args": "none" }],
    "no-useless-call": "error",
    "no-useless-computed-key": "error",
    "no-useless-constructor": "error",
    "no-useless-rename": "error",
    "no-var": "error",
    "no-void": "error",
    "no-whitespace-before-property": "error",
    "no-with": "error",
    "object-curly-spacing": ["error", "always", { "objectsInObjects": false }],
    "object-property-newline": ["error", { "allowMultiplePropertiesPerLine": true }],
    "object-shorthand": ["error", "always"],
    "operator-linebreak": ["error", "after", { "overrides": { "?": "ignore", ":": "ignore" }}],
    "padded-blocks": ["error", { "blocks": "never", "classes": "always" }],
    "prefer-arrow-callback": "error",
    "prefer-const": ["error", { "destructuring": "all", "ignoreReadBeforeAssign": true }],
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
    "radix": "error",
    "rest-spread-spacing": ["error", "never"],
    "semi": ["error", "never"],
    "space-before-blocks": "error",
    "space-before-function-paren": ["error", { "anonymous": "always", "named": "never" }],
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "space-unary-ops": ["error", { "words": true, "nonwords": false }],
    "spaced-comment": ["error", "always", { "exceptions": ["-"]}],
    "template-curly-spacing": "error",
    "template-tag-spacing": ["error", "never"],
    "unicode-bom": ["error", "never"],
    "use-isnan": "error",
    "valid-jsdoc": ["error", { "prefer": { "return": "returns" }, "requireReturn": false }],
    "valid-typeof": "error",
    "yield-star-spacing": ["error", "after"],
    "yoda": ["error", "never"]
  }
}