.eslintrc.json

{
  "root":   true,
  "env": {
    "node": true,
    "es6":  true
  },
  "parserOptions": {
    "ecmaVersion": 8,
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true
    }
  },
  "extends": "eslint:recommended",
  "rules": {
    "array-bracket-spacing":        ["error", "always", { "objectsInArrays": false }],
    "arrow-parens":                 ["error", "as-needed"],
    "arrow-spacing":                2,
    "block-spacing":                2,
    "brace-style":                  2,
    "camelcase":                    2,
    "comma-dangle":                 ["error", "never"],
    "comma-spacing":                [2, { "before": false, "after": true }],
    "comma-style":                  [2, "last"],
    "consistent-return":            2,
    "consistent-this":              [2, "self"],
    "curly":                        [2, "multi-or-nest"],
    "default-case":                 2,
    "dot-location":                 [2, "property"],
    "dot-notation":                 2,
    "eol-last":                     2,
    "eqeqeq":                       [2, "smart"],
    "func-style":                   [2, "declaration"],
    "global-require":               2,
    "handle-callback-err":          [2, "error"],
    "indent":                       [2, 2, { "SwitchCase": 1 }],
    "key-spacing":                  [2, { "beforeColon": false, "afterColon": true, "mode": "minimum", "align": "value" }],
    "keyword-spacing":              2,
    "max-depth":                    [2, 3],
    "max-nested-callbacks":         [2, 3],
    "max-params":                   [2, 3],
    "max-statements":               [2, 30],
    "new-cap":                      [2, { "newIsCap": true, "capIsNew": false }],
    "new-parens":                   2,
    "no-caller":                    2,
    "no-catch-shadow":              2,
    "no-confusing-arrow":          [2, { "allowParens": true }],
    "no-const-assign":              2,
    "no-constant-condition":        2,
    "no-dupe-class-members":        2,
    "no-console":                   2,
    "no-eval":                      2,
    "no-extra-bind":                2,
    "no-fallthrough":               2,
    "no-labels":                    2,
    "no-lonely-if":                 2,
    "no-loop-func":                 2,
    "no-magic-numbers":             0,
    "no-negated-condition":         2,
    "no-nested-ternary":            2,
    "no-new":                       2,
    "no-octal-escape":              2,
    "no-octal":                     2,
    "no-param-reassign":            [2, { "props": true }],
    "no-process-exit":              2,
    "no-proto":                     2,
    "no-return-assign":             2,
    "no-self-compare":              2,
    "no-sequences":                 2,
    "no-shadow":                    [2, { "builtinGlobals": true, "allow": [ "URL" ] }],
    "no-spaced-func":               2,
    "no-this-before-super":         2,
    "no-throw-literal":             2,
    "no-trailing-spaces":           2,
    "no-unneeded-ternary":          2,
    "no-unused-expressions":        2,
    "no-use-before-define":         [2, "nofunc"],
    "no-var":                       2,
    "no-void":                      2,
    "no-with":                      2,
    "object-curly-newline":         ["error", { "multiline": true, "consistent": true }],
    "object-curly-spacing":         [2, "always"],
    "object-property-newline":      ["error", { "allowAllPropertiesOnSameLine": true }],
    "object-shorthand":             ["error", "always"],
    "one-var":                      [2, "never"],
    "operator-linebreak":           [2, "after"],
    "quote-props":                  [2, "consistent-as-needed"],
    "quotes":                       [2, "single", "avoid-escape"],
    "prefer-const":                 2,
    "prefer-spread":                2,
    "prefer-template":              2,
    "radix":                        2,
    "rest-spread-spacing":          [2, "never"],
    "require-yield":                2,
    "semi":                         [2, "always"],
    "semi-spacing":                 2,
    "sort-vars":                    2,
    "space-before-blocks":          [2, "always"],
    "space-before-function-paren":  [2, "never"],
    "space-in-parens":              ["error", "never"],
    "space-infix-ops":              2,
    "space-unary-ops":              2,
    "spaced-comment":               [2, "always"],
    "wrap-iife":                    2,
    "valid-jsdoc":                  1,
    "yoda":                         2
  }
}