.eslintrc

{
  "env": {
    "node": true,
    "es6": true
  },
  "plugins": [
    "react"
  ],
  "ecmaFeatures": {
    "arrowFunctions": true,
    "blockBindings": true,
    "classes": true,
    "defaultParams": true,
    "destructuring": true,
    "forOf": true,
    "generators": true,
    "modules": true,
    "objectLiteralComputedProperties": true,
    "objectLiteralDuplicateProperties": false,
    "objectLiteralShorthandMethods": true,
    "objectLiteralShorthandProperties": true,
    "superInFunctions": true,
    "templateStrings": true,
    "unicodeCodePointEscapes": true,
    "globalReturn": false,
    "jsx": true
  },
  "rules": {

    // possible errors
    // @todo turn on
    "comma-dangle": [ 0, "always" ],
    "no-console": [ 1, "always" ],

    // best practices
    "consistent-return": [ 2 ], // @todo remove (should be error)
    "default-case": [ 2 ],
    "guard-for-in": [ 2 ],
    "no-eq-null": [ 2 ],
    "no-fallthrough": [ 2 ],
    "no-floating-decimal": [ 2 ],
    "no-self-compare": [ 2 ],
    "no-throw-literal": [ 2 ],
    "no-warning-comments": [ 1, { "terms": [ "todo", "fixme" ], "location": "start" } ],
    "radix": [ 1 ],
    "wrap-iife": [ 2 ],

    // strict mode
    "strict": [ 2 ],

    // variables
    "no-catch-shadow": [ 2 ],
    "no-undefined": [ 2 ], // @todo change to error
    "no-unused-vars": [ 2, {"args": "none"} ], // @todo remove (change to error)

    // node environment
    "no-mixed-requires": [ 2 ],
    "no-new-require": [ 2 ],
    "no-path-concat": [ 2 ],
    "no-restricted-modules": [ 2 ],

    // style
    "indent": [ 2, 2, { "indentSwitchCase" : true } ],
    "brace-style": [ 2, "1tbs" ],
    "camelcase": [ 2 ], // @todo change to error
    "comma-spacing": [ 2, { "before": false, "after": true } ],
    "consistent-this": [ 2, "self" ],
    "eol-last": [ 2 ],
    "key-spacing": false,
    "max-nested-callbacks": [ 2, 3 ],
    "new-cap": 0, // @todo discuss ( immutable :( )
    "no-inline-comments": [ 0 ],
    "no-lonely-if": [ 2 ],
    "no-multiple-empty-lines": [ 2 ],
    "no-nested-ternary": [ 2 ],
    "no-underscore-dangle": [ 0 ], // @todo discuss
    "quote-props": [ 2, "as-needed" ],
    "quotes": [ 2, "single", "avoid-escape" ],
    "semi": [ 2, "always" ],
    "space-after-keywords": [ 2, "always" ],
    "space-before-blocks": [ 2, "always" ],
    "space-before-function-parentheses": [ 2, "never" ],
    // @todo "space-in-brackets": [ 1, "always" ],
    "space-in-brackets": [ 0 ],
    "space-infix-ops": [ 2 ],
    "space-return-throw-case": [ 2 ],
    "space-unary-ops": true,
    "spaced-line-comment": [ 2 ],

    // es6
    // @TODO "no-var": [ 0 ],
    "generator-star": [ 2 ],

    // legacy
    "max-depth": [ 2, 2 ],
    "max-len": [ 2, 100 ],
    "max-params": [ 2, 4 ],
    "max-statements": [ 1, 15 ],
    "no-bitwise": [ 2 ],

    // eslint-plugin-react
    "react/jsx-uses-react": [ 2 ],
    "react/no-did-mount-set-state": [ 2 ],
    "react/no-did-update-set-state": [ 2 ],
    "react/prop-types": [ 1 ],
    "react/wrap-multilines": [ 2 ],
  }
}