.eslintrc

{
  "parser": "babel-eslint",
  'env': {
    'es6': true,
    'node': true
  },
  'ecmaFeatures': {
    'arrowFunctions': true,
    'blockBindings': true,
    'classes': true,
    'defaultParams': true,
    'destructuring': false,
    'forOf': true,
    'generators': false,
    'modules': true,
    'objectLiteralComputedProperties': true,
    'objectLiteralDuplicateProperties': false,
    'objectLiteralShorthandMethods': true,
    'objectLiteralShorthandProperties': true,
    'restParams': false,
    'spread': false,
    'superInFunctions': true,
    'templateStrings': true,
    'jsx': true
  },
  'rules': {
    'eqeqeq': 2,
    "indent": [2, 2],
    // disallow modifying variables that are declared using const
    'no-const-assign': 2,
    // require let or const instead of var
    'no-var': 2,
    // suggest using of const declaration for variables that are never modified after declared
    'prefer-const': 1,
    // enforce one true brace style
    'brace-style': [2, '1tbs', {'allowSingleLine': true }],
    // require camel case names
    'camelcase': [2, {'properties': 'never'}],
    // enforce one true comma style
    'comma-style': [2, 'last'],
    // enforce newline at the end of file, with no multiple empty lines
    'eol-last': 2,
    // enforces spacing between keys and values in object literal properties
    'key-spacing': [2, {'beforeColon': false, 'afterColon': true}],
    // require a capital letter for constructors
    'new-cap': [2, {'newIsCap': true}],
    'no-console': 0,
    // disallow mixed spaces and tabs for indentation
    'no-mixed-spaces-and-tabs': 2,
    // disallow trailing whitespace at the end of lines
    'no-trailing-spaces': 2,
    // disallow declaration of variables that are not used in the code
    'no-unused-expressions': 2,
    'no-unused-vars': 1,
    // require all variables to be defined
    'no-undef': "error",
    // specify whether double or single quotes should be used
    'quotes': [2, 'single', 'avoid-escape'],
    'semi': 1,
    // enforce spacing before and after semicolons
    'semi-spacing': [2, {'before': false, 'after': true}],
    // require spaces around operators
    'space-infix-ops': 2,
    // require spaces following keywords
    'keyword-spacing': 2,
    // warn when line length is greater than 80 characters
    'max-len': [1, 100, 2, { 'ignoreComments': true, 'ignoreUrls': true }]
  },
  'globals': {
    'sails': true,
    'describe': true,
    'it': true,
    'before': true,
    'beforeEach': true,
    'after': true,
    'afterEach': true
  },
  'extends': "eslint:recommended",
}