.eslintrc.json

{

  // Make this configuration file as the root one
  "root": true,

  "parserOptions": {
    "ecmaFeatures": {

      // Give ESLint the ability to read let and const variables
      "blockBindings": true

    }
  },

  // Extends eslint recommended rules
  "extends": [
    "eslint:recommended",
    "plugin:node/recommended"
  ],
  "env": {

    // Add node.js environment globals
    "node": true,

    // Enable ECMAScript 6 features
    "es6": true

  },
  "rules": {

    // Disallow unused vars but not unused arguments
    "no-unused-vars": [2, {"vars": "local", "args": "none"}],

    // Treat var as block scoped
    "block-scoped-var": 2,

    // Require default case in switch statements
    "default-case": 2,

    // Disallow use of alert
    "no-alert": 2,

    // Disallow use of caller/callee
    "no-caller": 2,

    // Disallow null comparisons
    "no-eq-null": 2,

    // Disallow eval()
    "no-eval": 2,

    // Disallow adding to native types
    "no-extend-native": 2,

    // Disallow unnecessary function binding
    "no-extra-bind": 2,

    // Disallow floating decimals
    "no-floating-decimal": 2,

    // Disallow the type conversion with shorter notations
    "no-implicit-coercion": 2,

    // Disallow implied eval
    "no-implied-eval": 2,

    // Disallow Iterator
    "no-iterator": 2,

    // Disallow labeled statements
    "no-labels": 2,

    // Disallow unnecessary nested blocks
    "no-lone-blocks": 2,

    // Disallow multiple spaces
    "no-multi-spaces": 2,

    // Disallow multiline strings
    "no-multi-str": 2,

    // Disallow assignment to native objects or read-only global variables
    "no-global-assign": 2,

    // Disallow function constructor
    "no-new-func": 2,

    // Disallow octal escapes
    "no-octal-escape": 2,

    // Disallow octal literals
    "no-octal": 2,

    // Disallow use of __proto__
    "no-proto": 2,

    // Disallow script URLs
    "no-script-url": 2,

    // Disallow self compare
    "no-self-compare": 2,

    // Restrict what can be thrown as an exception
    "no-throw-literal": 2,

    // Disallow unused expressions
    "no-unused-expressions": [2, {"allowShortCircuit": true, "allowTernary": true}],

    // Disallow unnecessary .call() and .apply()
    "no-useless-call": 2,

    // Disallow unncessary concatenation of strings
    "no-useless-concat": 2,

    // No with statements
    "no-with": 2,

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

    // Disallow shadowing of variables inside of catch
    "no-catch-shadow": 2,

    // Disallow variables deletion
    "no-delete-var": 2,

    // Disallow shadowing of restricted names
    "no-shadow-restricted-names": 2,

    // Disallow early use
    "no-use-before-define": 2,

    // Disallow spaces inside of brackets
    "array-bracket-spacing": 2,

    // Disallow spaces inside of single line blocks
    "block-spacing": [2, "always"],

    // Require brace style
    "brace-style": [2, "1tbs", { "allowSingleLine": false }],

    // Require camelcase
    "camelcase": [2, {"properties": "always"}],

    // Enforces spacing around commas
    "comma-spacing": [2, {"before": false, "after": true}],

    // Comma style
    "comma-style": [2, "last"],

    // Disallow spaces inside of computed properties
    "computed-property-spacing": [2, "never"],

    // Require consistent this
    "consistent-this": [2, "self"],

    // Require file to end with single newline
    "eol-last" : 2,

    // Validate Indentation
    "indent": [2, 2, {"SwitchCase": 1, "VariableDeclarator": { "var": 1, "let": 1, "const": 1}}],

    // Enforce property spacing
    "key-spacing": [2, {"beforeColon": false, "afterColon": true}],

    // Enforce empty lines around comments
    "lines-around-comment": [2, { "beforeBlockComment": true, "beforeLineComment": true, "allowBlockStart": true, "allowBlockEnd": true }],

    // Require constructors to use initial caps
    "new-cap": [2, {"newIsCap": true, "capIsNew": false}],

    // Require parens for constructors
    "new-parens": 2,

    // Disallow if as the only statement in an else block
    "no-lonely-if": 2,

    // Disallow if as the only statement in an else block
    "no-mixed-spaces-and-tabs": 2,

    // Disallows multiple blank lines
    "no-multiple-empty-lines": [2, {"max": 2}],

    // Disallow spaces in function calls
    "no-spaced-func": 2,

    // Disallow trailing spaces at the end of lines
    "no-trailing-spaces": 2,

    // Disallow spaces inside of curly braces in objects.
    "object-curly-spacing": 2,

    // Operator linebreak
    "operator-linebreak": [2, "after"],

    // Quoting style for property names
    "quote-props": [2, "as-needed"],

    // Enforce quote style
    "quotes": [2, "single"],

    // Require JSDoc comment
    "require-jsdoc": 2,

    // Enforce spacing before and after semicolons
    "semi-spacing": 2,

    // Enforce semicolons
    "semi": 2,

    // Require spaces following keywords
    "keyword-spacing": 2,

    // Require or disallow space before blocks
    "space-before-blocks": 2,

    // Disallow a space before function parenthesis
    "space-before-function-paren": [2, "never"],

    // Disallow spaces inside of parentheses
    "space-in-parens": 2,

    // Require spaces around infix operators
    "space-infix-ops": 2,

    // Require or disallow spaces before/after unary operators
    "space-unary-ops": [2, { "words": true, "nonwords": false }],

    // Requires or disallows a whitespace (space or tab) beginning a comment
    "spaced-comment": [2, "always"],

    // Limit Maximum Length of Line
    "max-len": [2, 120, 2, {"ignoreUrls": true}],

    // Require parens in arrow function arguments
    "arrow-parens": [2, "always"],

    // Require space before and after arrow function's arrow
    "arrow-spacing": 2,

    // Require space before generator star but not after
    "generator-star-spacing": [2, {"before": false, "after": true}],

    // Disallow unnecessary constructor
    "no-useless-constructor": 2,

    // Require let or const instead of var
    "no-var": 2,

    // Require object literal shorthand syntax
    "object-shorthand": 2,

    // Suggest using arrow functions as callbacks
    "prefer-arrow-callback": 2,

    // Suggest using const
    "prefer-const": 2,

    // Suggest using template literals instead of string concatenation
    "prefer-template": 2,

    // Enforce usage of spacing in template strings
    "template-curly-spacing": 2,

    // Enforce spacing after yield stars
    "yield-star-spacing": [2, "after"],

    // Disallow trailing commas
    "comma-dangle": 2,

    // Disallow mixed requires
    "node/no-mixed-requires": 2,

    // Disallow new require
    "node/no-new-require": 2,

    // Disallow string concatenation when using _dirname and _filename
    "node/no-path-concat": 2,

    // Disallow process.exit()
    "node/no-process-exit": 2,

    // Disallow synchronous methods
    "node/no-sync": 2

  }
}