.eslintrc

{
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "env": {
    "node": true,
    "browser" : true,
    "es6": true,
    "mongo": true,
    "jquery": true,
    "mocha": true
  },
  "globals": {
    "assert": true,
    "__DEV__" : true,
    "object": true,
    "app": true,
    "iod": true,
    "React": true,
    "__insp": true,
    "c3": true,
    "mixpanel": true,
    "translate": true,
    "ReactBootstrap": true,
    "d3": true,
    "Bloodhound": true,
    "server": true,
    "reactPage": true,
    "FastClick": true,
    "Headroom": true,
    "Chart": true
  },
  "plugins": [
    "babel",
    "react"
  ],
  "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": true
  },
  "rules": {
    // treat var statements as if they were block scoped
    "block-scoped-var": 1,
    // require default case in switch statements
    "default-case": 1,
    // encourages use of dot notation whenever possible
    "dot-notation": [1, { "allowKeywords": true}],
    // require the use of === and !==
    "eqeqeq": 1,
    // make sure for-in loops have an if statement
    "guard-for-in": 1,
    // disallow the use of alert, confirm, and prompt
    "no-alert": 1,
    // disallow use of arguments.caller or arguments.callee
    "no-caller": 1,
    // disallow else after a return in an if
    "no-else-return": 1,
    // disallow comparisons to null without a type-checking operator
    "no-eq-null": 1,
    // disallow use of eval()
    "no-eval": 1,
    // disallow adding to native types
    "no-extend-native": 1,
    // disallow unnecessary function binding
    "no-extra-bind": 1,
    // disallow fallthrough of case statements
    "no-fallthrough": 1,
    // disallow the use of leading or trailing decimal points in numeric literals
    "no-floating-decimal": 1,
    // disallow the type conversions with shorter notations
    "no-implicit-coercion": [2, {
        "boolean": false,
        "number": true,
        "string": true
    }],
    // disallow use of eval()-like methods
    "no-implied-eval": 1,
    // disallow this keywords outside of classes or class-like objects
    "no-invalid-this": 1,
    // disallow usage of __iterator__ property
    "no-iterator": 1,
    // disallow use of labeled statements
    "no-labels": 1,
    // disallow unnecessary nested blocks
    "no-lone-blocks": 1,
    // disallow creation of functions within loops
    "no-loop-func": 1,
    // disallow use of multiple spaces
    "no-multi-spaces": 1,
    // disallow use of multiline strings
    "no-multi-str": 1,
    // disallow reassignments of native objects
    "no-native-reassign": 1,
    // disallow use of new operator when not part of the assignment or comparison
    "no-new": 1,
    // disallow use of new operator for Function object
    "no-new-func": 1,
    // disallows creating new instances of String,Number, and Boolean
    "no-new-wrappers": 1,
    // disallow use of (old style) octal literals
    "no-octal": 1,
    // disallow use of octal escape sequences in string literals, such as
    // var foo = "Copyright \151";
    "no-octal-escape": 1,
    // disallow reassignment of function parameters
    "no-param-reassign": 1,
    // disallow use of process.env
    "no-process-env": 0,
    // disallow usage of __proto__ property
    "no-proto": 1,
    // disallow declaring the same variable more then once
    "no-redeclare": 1,
    // disallow use of assignment in return statement
    "no-return-assign": 1,
    // disallow use of `javascript:` urls.
    "no-script-url": 1,
    // disallow comparisons where both sides are exactly the same
    "no-self-compare": 1,
    // disallow use of comma operator
    "no-sequences": 1,
    // restrict what can be thrown as an exception
    "no-throw-literal": 1,
    // disallow usage of expressions in statement position
    "no-unused-expressions": 1,
    // disallow unnecessary .call() and .apply()
    "no-useless-call": 1,
    // disallow use of void operator
    "no-void": 1,
    // disallow use of the with statement
    "no-with": 1,
    // require use of the second argument for parseInt()
    "radix": 1,
    // requires to declare all vars on top of their containing scope
    "vars-on-top": 1,
    // require immediate function invocation to be wrapped in parentheses
    "wrap-iife": [1, "any"],
    // require or disallow Yoda conditions
    "yoda": 1,

    // es6 specific rules
    // require space before/after arrow function"s arrow
    "arrow-spacing": 1,
    // verify super() callings in constructors
    "constructor-super": 1,
    // enforce the spacing around the * in generator functions
    "generator-star-spacing": 1,
    // disallow modifying variables of class declarations
    "no-class-assign": 1,
    // disallow modifying variables that are declared using const
    "no-const-assign": 1,
    // disallow to use this/super before super() calling in constructors.
    "no-this-before-super": 1,
    // require let or const instead of var
    "no-var": 1,
    // suggest using of const declaration for variables that are never modified after declared
    "prefer-const": 1,
    // suggest using the spread operator instead of .apply()
    "prefer-spread": 1,
    // disallow generator functions that do not have yield
    "require-yield": 1,

    // node specific rules
    // enforce return after a callback
    "callback-return": 1,
    // enforces error handling in callbacks (node environment)
    "handle-callback-err": 1,
    // disallow mixing regular variable and require declarations
    "no-mixed-requires": [1, false],
    // disallow use of new operator with the require function
    "no-new-require": 1,
    // disallow process.exit()
    "no-process-exit": 1,
    // restrict usage of specified node modules
    "no-restricted-modules": 1,
    // disallow use of synchronous methods (off by default)
    "no-sync": 1,

    // react rules
    // Prevent missing displayName in a React component definition
    // react does this by default but sometimes
    // it messes up (error in Component, which component?)
    "react/display-name": 1,
    // Enforce boolean attributes notation in JSX
    "react/jsx-boolean-value": 1,
    // Enforce or disallow spaces inside of curly braces in JSX attributes
    "react/jsx-curly-spacing": 0,
    // Prevent duplicate props in JSX
    "react/jsx-no-duplicate-props": 1,
    // Disallow undeclared variables in JSX
    "react/jsx-no-undef": 1,
    // Enforce quote style for JSX attributes
    "jsx-quotes": [1, "prefer-single"],
    // Prevent React to be incorrectly marked as unused
    "react/jsx-uses-react": 1,
    // Prevent variables used in JSX to be incorrectly marked as unused
    "react/jsx-uses-vars": 1,
    // Prevent usage of setState in componentDidMount
    "react/no-did-mount-set-state": 1,
    // Prevent usage of setState in componentDidUpdate
    "react/no-did-update-set-state": 1,
    // Prevent multiple component definition per file
    "react/no-multi-comp": 0,
    // Prevent usage of unknown DOM property
    "react/no-unknown-property": 1,
    // Restrict file extensions that may be required
    "react/jsx-filename-extension": 1,
    // Prevent extra closing tags for components without children
    "react/self-closing-comp": 1,
    // Prevent missing parentheses around multilines JSX
    "react/jsx-wrap-multilines": 1,

    // style-centric rules below
    // enforce spacing inside array brackets
    "array-bracket-spacing": [1, "never"],
    // enforce one true brace style
    // this is off because i prefer stroustrup
    // but we haven't been writing code that way
    "brace-style": [1,
    "stroustrup", {
      "allowSingleLine": true
      }
    ],
    // enforce spacing before and after comma
    "comma-spacing": [1, {
      "before": false,
      "after": true
    }],
    // enforce one true comma style
    "comma-style": [1, "last"],
    // require or disallow padding inside computed properties
    "computed-property-spacing": [1, "never"],
    // enforces consistent naming when capturing the current execution context
    "consistent-this": 1,
    // enforce newline at the end of file, with no multiple empty lines
    "eol-last": 1,
    // require function expressions to have a name
    // "func-names": 1,
    // enforces use of function declarations or expressions
    "func-style": 1,
    // this option enforces minimum and maximum identifier lengths (variable names, property names etc.)
    "id-length": [1, {
      "min": 1,
      "max": 30,
      "properties": "never"
    }],
    // this option sets a specific tab width for your code
    "indent": [1, 2],
    // enforces spacing between keys and values in object literal properties
    "key-spacing": [1, {
      "beforeColon": false,
      "afterColon": true
    }],
    // disallow mixed "LF" and "CRLF" as linebreaks
    "linebreak-style": 1,
    // disallow the omission of parentheses when invoking a constructor with no arguments
    "new-parens": 1,
    // disallow use of the Array constructor
    "no-array-constructor": 1,
    // disallow use of the continue statement
    "no-continue": 1,
    "no-inline-comments": 1,
    // disallow mixed spaces and tabs for indentation
    "no-mixed-spaces-and-tabs": 1,
    // disallow multiple empty lines
    "no-multiple-empty-lines": [1, {"max": 2}],
    // disallow nested ternary expressions
    // don't allow this madness!
    "no-nested-ternary": 1,
    // disallow use of the Object constructor
    "no-new-object": 1,
    // disallow space between function identifier and application
    "no-spaced-func": 1,
    // disallow the use of ternary operators
    "no-ternary": 0,
    // disallow trailing whitespace at the end of lines
    "no-trailing-spaces": 1,
    // disallow the use of Boolean literals in conditional expressions
    "no-unneeded-ternary": 1,
    // allow just one var statement per function (never means we don't allow this)
    "one-var": [1, "never"],
    // enforce padding within blocks
    "padded-blocks": [0, "never"],
    // specify whether double or single quotes should be used
    "quotes": [0, "single", "avoid-escape"],
    // enforce spacing before and after semicolons
    "semi-spacing": [1, {"before": false, "after": true}],
    // require or disallow use of semicolons instead of ASI
    "semi": [1, "never"],
    // sort variables within the same declaration block
    "sort-vars": 1,
    // require a space after certain keywords
    "keyword-spacing": [1, {
        "before": true,
        "after": true,
        "overrides": {}
    }],
    // require or disallow space before blocks
    "space-before-blocks": 1,
    // require or disallow space before function opening parenthesis
    "space-before-function-paren": [1, "always"],
    // require or disallow spaces inside parentheses
    "space-in-parens": [1, "never"],
    // require spaces around operators
    "space-infix-ops": 1,
    // Require or disallow spaces before/after unary operators
    "space-unary-ops": [1, {
      "words": true,
      "nonwords": false
    }],
    // require or disallow a space immediately following the // or /* in a comment
    "spaced-comment": [1, "always", {
      "exceptions": ["-", "+", "*"],
      "markers": ["=", "!"]
    }],
    "camelcase": 1,
    "no-dupe-keys": 1,
    "no-extra-semi": 1,
    "no-extra-boolean-cast": 1,
    "no-unused-vars": [1, {
      "vars": "all",
      "args": "after-used",
      "varsIgnorePattern": "React"
    }],
    // document your work!
    "valid-jsdoc": 1,
    // Disallow undeclared variables in general
    "no-undef": 1
  }
}