ESLint config example

eslintrc.js

var MAX_CHARS = 120;
var SPACES_PER_TAB = 4;
var MAX_NESTED_CALLBACKS = 3;
var MAX_PARAMS = 3;
var MAX_STATEMENTS = 10;

module.exports = {

    // http://eslint.org/docs/rules/

    'ecmaFeatures': {
        'arrowFunctions': true,
        'binaryLiterals': true,
        'blockBindings': true,
        'classes': true,
        'defaultParams': true,
        'destructuring': true,
        'forOf': true,
        'generators': true,
        'modules': true,
        'objectLiteralComputedProperties': true,
        'objectLiteralDuplicateProperties': true,
        'objectLiteralShorthandMethods': true,
        'objectLiteralShorthandProperties': true,
        'octalLiterals': true,
        'regexUFlag': true,
        'regexYFlag': true,
        'restParams': true,
        'spread': true,
        'superInFunctions': true,
        'templateStrings': true,
        'unicodeCodePointEscapes': true,
        'globalReturn': true,
        'jsx': true,
    },

    'env': {
        'browser': true,
        'node': true,
        'amd': true,
        'mocha': true,
        'jasmine': true,
        'phantomjs': true,
        'jquery': true,
        'prototypejs': true,
        'shelljs': true,
    },

    'globals': {
        'angular': true,
    },

    'plugins': [
        // e.g. "react" (must run `npm install 'eslint-plugin-react'` first)
    ],

    'rules': {

        ////////// Possible Errors //////////

        'comma-dangle': [2, 'always-multiline'],
        'no-cond-assign': 2,
        'no-console': 0,
        'no-constant-condition': 2,
        'no-control-regex': 2,
        'no-debugger': 2,
        'no-dupe-args': 2,
        'no-dupe-keys': 2,
        'no-duplicate-case': 2,
        'no-empty-character-class': 2,
        'no-empty': 2,
        'no-ex-assign': 2,
        'no-extra-boolean-cast': 2,
        'no-extra-parens': 2,
        'no-extra-semi': 2,
        'no-func-assign': 2,
        'no-inner-declarations': 2,
        'no-invalid-regexp': 2,
        'no-irregular-whitespace': 2,
        'no-negated-in-lhs': 2,
        'no-obj-calls': 2,
        'no-regex-spaces': 2,
        'no-sparse-arrays': 2,
        'no-unreachable': 2,
        'use-isnan': 2,
        'valid-jsdoc': 2,
        'valid-typeof': 2,
        'no-unexpected-multiline': 2,

        ////////// Best Practices //////////

        'accessor-pairs': 0,
        'block-scoped-var': 0,
        'complexity': [2, 2],
        'consistent-return': 2,
        'curly': 2,
        'default-case': 2,
        'dot-location': [2, 'property'],
        'dot-notation': 2,
        'eqeqeq': 2,
        'guard-for-in': 0,
        'no-alert': 2,
        'no-caller': 0,
        'no-div-regex': 0,
        'no-else-return': 2,
        'no-empty-label': 0,
        'no-empty-pattern': 0,
        'no-eq-null': 2,
        'no-eval': 2,
        'no-extend-native': 0,
        'no-extra-bind': 0,
        'no-fallthrough': 2,
        'no-floating-decimal': 0,
        'no-implied-eval': 0,
        'no-iterator': 0,
        'no-labels': 0,
        'no-lone-blocks': 0,
        'no-loop-func': 0,
        'no-magic-numbers': 2,
        'no-multi-spaces': 2,
        'no-multi-str': 0,
        'no-native-reassign': 0,
        'no-new-func': 0,
        'no-new-wrappers': 0,
        'no-new': 0,
        'no-octal-escape': 0,
        'no-octal': 0,
        'no-param-reassign': 0,
        'no-process-env': 0,
        'no-proto': 0,
        'no-redeclare': 0,
        'no-return-assign': 0,
        'no-script-url': 0,
        'no-self-compare': 0,
        'no-sequences': 0,
        'no-throw-literal': 0,
        'no-unused-expressions': 0,
        'no-void': 0,
        'no-warning-comments': 0,
        'no-with': 0,
        'radix': 0,
        'vars-on-top': 0,
        'wrap-iife': 0,
        'yoda': 0,

        ////////// Strict Mode //////////

        'strict': [2, 'global'],

        ////////// Variables //////////

        'no-catch-shadow': 0,
        'no-delete-var': 2,
        'no-label-var': 0,
        'no-shadow': 0,
        'no-shadow-restricted-names': 0,
        'no-undef': 2,
        'no-undef-init': 0,
        'no-undefined': 0,
        'no-unused-vars': 2,
        'no-use-before-define': 0,

        ////////// Node.js //////////

        'global-require': 2,
        'handle-callback-err': [2, '^.*(e|E)rr'],
        'no-mixed-requires': 0,
        'no-new-require': 0,
        'no-path-concat': 0,
        'no-process-exit': 0,
        'no-restricted-modules': 0,
        'no-sync': 0,

        ////////// Stylistic Issues //////////

        'array-bracket-spacing': [2, 'never'],
        'block-spacing': [2, 'never'],
        'brace-style': [2, '1tbs', {'allowSingleLine': true}],
        'camelcase': 2,
        'comma-spacing': [2, {'before': false, 'after': true}],
        'comma-style': [2, 'last'],
        'computed-property-spacing': [2, 'never'],
        'consistent-this': [2, 'self'],
        'eol-last': 2,
        'func-names': 0,
        'func-style': [2, 'declaration'],
        'indent': 2,
        'key-spacing': [2, {'beforeColon': false, 'afterColon': true}],
        'lines-around-comment': [
            2,
            {'beforeBlockComment': true, 'beforeLineComment': true, 'allowBlockStart': true},
        ],
        'linebreak-style': [2, 'unix'],
        'max-nested-callbacks': [2, MAX_NESTED_CALLBACKS],
        'new-cap': 2,
        'new-parens': 2,
        'newline-after-var': [2, 'always'],
        'no-array-constructor': 2,
        'no-continue': 0,
        'no-inline-comments': 2,
        'no-lonely-if': 2,
        'no-mixed-spaces-and-tabs': 2,
        'no-multiple-empty-lines': [2, {max: 1}],
        'no-nested-ternary': 2,
        'no-new-object': 2,
        'no-spaced-func': 2,
        'no-ternary': 0,
        'no-trailing-spaces': 2,
        'no-underscore-dangle': 0,
        'no-unneeded-ternary': 0,
        'object-curly-spacing': [2, 'never'],
        'one-var': [2, 'never'],
        'operator-assignment': 0,
        'operator-linebreak': [2, 'before'],
        'padded-blocks': 0,
        'quote-props': [2, 'as-needed'],
        'quotes': [2, 'single', 'avoid-escape'],
        'semi-spacing': 2,
        'semi': [2, 'always'],
        'sort-vars': 2,
        'space-after-keywords': 2,
        'space-before-keywords': 2,
        'space-before-blocks': 2,
        'space-before-function-paren': [2, 'never'],
        'space-in-parens': [2, 'never'],
        'space-infix-ops': 2,
        'space-return-throw-case': 2,
        'space-unary-ops': [2, {'words': true, 'nonwords': false}],
        'spaced-comment': [2, 'always', {'block': {'exceptions': ['-+*']} }],
        'wrap-regex': 0,

        ////////// ECMAScript 6 //////////

        'constructor-super': 0,
        'generator-star-spacing': 0,
        'no-this-before-super': 0,
        'no-var': 0,
        'object-shorthand': 0,
        'prefer-const': 0,

        ////////// Legacy //////////

        'max-depth': 2,
        'max-len': [2, MAX_CHARS, SPACES_PER_TAB],
        'max-params': [2, MAX_PARAMS],
        'max-statements': [2, MAX_STATEMENTS],
        'no-bitwise': 2,
        'no-plusplus': 0,
    },
};