.eslintrc

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

  "ecmaFeatures": {
    "binaryLiterals": false,                    // enable binary literals
    "blockBindings": true,                      // enable let and const (aka block bindings)
    "defaultParams": false,                     // enable default function parameters
    "forOf": true,                              // enable for-of loops
    "generators": false,                        // enable generators
    "objectLiteralComputedProperties": false,   // enable computed object literal property names
    "objectLiteralDuplicateProperties": false,  // enable duplicate object literal properties in strict mode
    "objectLiteralShorthandMethods": false,     // enable object literal shorthand methods
    "objectLiteralShorthandProperties": false,  // enable object literal shorthand properties
    "octalLiterals": false,                     // enable octal literals
    "regexUFlag": false,                        // enable the regular expression u flag
    "regexYFlag": false,                        // enable the regular expression y flag
    "templateStrings": true ,                   // enable template strings
    "unicodeCodePointEscapes": false,           // enable code point escapes
    "jsx": false,                               // enable JSX
    "modules": true
  },

  "env": {
    "browser": true,      // browser global variables.
    "node": true,         // Node.js global variables and Node.js-specific rules.
    "amd": true,          // defines require() and define() as global variables as per the amd spec.
    "es6": true           // EcmaScript 6
  },

  "globals": {
    // e.g. "angular": true
  },

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

  "rules": {
    ////////// Possible Errors //////////

    "valid-typeof": 2,            // Ensure that the results of typeof are compared against a valid string


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

    "eqeqeq": 2,                // require the use of === and !==
    "no-alert": 2,              // disallow the use of alert, confirm, and prompt

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

    "eol-last": 2,                  // enforce newline at the end of file, with no multiple empty lines
    "no-lonely-if": 2,              // disallow if as the only statement in an else block (off by default)
    "no-mixed-spaces-and-tabs": 2,  // disallow mixed spaces and tabs for indentation
    "no-multiple-empty-lines": 2,   // disallow multiple empty lines (off by default)
    "no-trailing-spaces": 2,        // disallow trailing whitespace at the end of lines

    "quotes": [
      2,
      "double"
    ]
  }
}