.eslintrc

{
  //   ╔═╗╔═╗╦  ╦╔╗╔╔╦╗┬─┐┌─┐
  //   ║╣ ╚═╗║  ║║║║ ║ ├┬┘│
  //  o╚═╝╚═╝╩═╝╩╝╚╝ ╩ ┴└─└─┘
  // A set of basic conventions (similar to .jshintrc) for use within any
  // arbitrary JavaScript / Node.js package -- inside or outside Sails.js.
  // For the master copy of this file, see the `.eslintrc` template file in
  // the `sails-generate` package (https://www.npmjs.com/package/sails-generate.)
  // Designed for ESLint v4.
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  // For more information about any of the rules below, check out the relevant
  // reference page on eslint.org.  For example, to get details on "no-sequences",
  // you would visit `http://eslint.org/docs/rules/no-sequences`.  If you're unsure
  // or could use some advice, come by https://sailsjs.com/support.
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  "env": {
    "node": true
  },

  "parserOptions": {
    "ecmaVersion": 8
  },

  "globals": {
    "Promise": true,
    "Symbol": true,
    // ^^Available since Node v4
  },

  "rules": {
    "callback-return":              ["error", ["done", "proceed", "next", "onwards", "callback", "cb"]],
    "camelcase":                    ["warn", {"properties": "always"}],
    "comma-style":                  ["warn", "last"],
    "curly":                        ["error"],
    "eqeqeq":                       ["error", "always"],
    "eol-last":                     ["warn"],
    "handle-callback-err":          ["error"],
    "indent":                       ["warn", 2, {
      "SwitchCase": 1,
      "MemberExpression": "off",
      "FunctionDeclaration": {"body":1, "parameters": "off"},
      "FunctionExpression": {"body":1, "parameters": "off"},
      "CallExpression": {"arguments":"off"},
      "ArrayExpression": 1,
      "ObjectExpression": 1,
      "ignoredNodes": ["ConditionalExpression"]
    }],
    "linebreak-style":              ["error", "unix"],
    "no-dupe-keys":                 ["error"],
    "no-duplicate-case":            ["error"],
    "no-extra-semi":                ["warn"],
    "no-labels":                    ["error"],
    "no-mixed-spaces-and-tabs":     ["error", "smart-tabs"],
    "no-redeclare":                 ["warn"],
    "no-return-assign":             ["error", "always"],
    "no-sequences":                 ["error"],
    "no-trailing-spaces":           ["warn"],
    "no-undef":                     ["error"],
    "no-unexpected-multiline":      ["warn"],
    "no-unreachable":               ["warn"],
    "no-unused-vars":               ["warn", {"caughtErrors":"all", "caughtErrorsIgnorePattern": "^unused($|[A-Z].*$)", "argsIgnorePattern": "^unused($|[A-Z].*$)", "varsIgnorePattern": "^unused($|[A-Z].*$)" }],
    "no-use-before-define":         ["error", {"functions":false}],
    "one-var":                      ["warn", "never"],
    "quotes":                       ["warn", "single", {"avoidEscape":false, "allowTemplateLiterals":true}],
    "semi":                         ["error", "always"],
    "semi-spacing":                 ["warn", {"before":false, "after":true}],
    "semi-style":                   ["warn", "last"]
  }

}