.eslintrc.json

{
  "root": true,
  "parser": "espree",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "script",
    "ecmaFeatures": {}
  },
  "plugins": [],
  "env": {
    "node": true
  },
  "globals": {
    "Promise": false
  },
  "rules": {
    // Possible Errors (fully reviewed 2016-07-05)

    "no-cond-assign": 2,
    "no-console": 0,
    "no-constant-condition": 2,
    "no-control-regex": 2,
    "no-debugger": 2,
    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-empty": [2, { "allowEmptyCatch": false }],
    "no-empty-character-class": 2,
    "no-ex-assign": 2,
    "no-extra-boolean-cast": 2,
    "no-extra-parens": [2, "all"],
    "no-extra-semi": 2,
    "no-func-assign": 2,
    "no-inner-declarations": [2, "functions"],
    "no-invalid-regexp": 2,
    "no-irregular-whitespace": [2, { "skipComments": false }],
    "no-negated-in-lhs": 2,
    "no-obj-calls": 2,
    "no-prototype-builtins": 2,
    "no-regex-spaces": 2,
    "no-sparse-arrays": 2,
    "no-unexpected-multiline": 2,
    "no-unreachable": 2,
    "no-unsafe-finally": 2,
    "use-isnan": 2,
    "valid-jsdoc": 0,
    "valid-typeof": 2,

    // Best Practices

    "accessor-pairs": 2,
    "curly": [2, "multi-line"],
    "dot-location": [2, "property"],
    "eqeqeq": 2,
    "no-caller": 2,
    "no-empty-pattern": 0, // for ES6 destructuring
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-fallthrough": 2,
    "no-floating-decimal": 2,
    "no-implied-eval": 2,
    "no-iterator": 2,
    "no-labels": 2,
    "no-lone-blocks": 2,
    "no-magic-numbers": 0,
    "no-multi-spaces": 2,
    "no-multi-str": 2,
    "no-native-reassign": 2,
    "no-new": 2,
    "no-new-func": 2,
    "no-new-wrappers": 2,
    "no-octal": 2,
    "no-octal-escape": 2,
    "no-proto": 2,
    "no-redeclare": 2,
    "no-return-assign": [2, "except-parens"],
    "no-self-assign": 2,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-throw-literal": 2,
    "no-unmodified-loop-condition": 2,
    "no-useless-call": 2,
    "no-useless-escape": 2,
    "no-with": 2,
    "wrap-iife": [2, "inside"],
    "yoda": 2,

    // Strict Mode (fully reviewed 2016-07-05)

    "strict": [2, "safe"],

    // Variables (fully reviewed 2016-07-05)

    "init-declarations": [2, "always"],
    "no-catch-shadow": 0,
    "no-delete-var": 2,
    "no-label-var": 2,
    "no-restricted-globals": 0,
    "no-shadow": [2, { "builtinGlobals": false, "hoist": "all", "allow": [] }],
    "no-shadow-restricted-names": 2,
    "no-undef": [2, { "typeof": true }],
    "no-undef-init": 2,
    "no-undefined": 0,
    "no-unused-vars": [
      2,
      { "vars": "local", "args": "none", "caughtErrors": "none" }
    ],
    "no-use-before-define": [2, { "functions": false, "classes": true }],

    // Node.js and CommonJS (fully reviewed 2016-07-05)

    "callback-return": 0,
    "global-require": 0,
    "handle-callback-err": [2, "^(err|error)$"],
    "no-mixed-requires": 0,
    "no-new-require": 2,
    "no-path-concat": 2,
    "no-process-env": 2,
    "no-process-exit": 2,
    "no-restricted-modules": 0,
    "no-sync": 2,

    // Stylistic Issues

    "block-spacing": 2,
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "camelcase": [2, { "properties": "never" }],
    "comma-dangle": [2, "always"],
    "comma-spacing": 2,
    "comma-style": 2,
    "eol-last": 2,
    "indent": [2, 4, { "SwitchCase": 1 }],
    "jsx-quotes": 0,
    "key-spacing": 2,
    "keyword-spacing": 2,
    "new-cap": 0,
    "new-parens": 2,
    "no-array-constructor": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multiple-empty-lines": [2, { "max": 2, "maxBOF": 0, "maxEOF": 1 }],
    "no-new-object": 2,
    "no-plusplus": [2, { "allowForLoopAfterthoughts": false }],
    "no-spaced-func": 2,
    "no-trailing-spaces": 2,
    "no-unneeded-ternary": [2, { "defaultAssignment": false }],
    "no-whitespace-before-property": 2,
    "one-var": 0,
    "operator-linebreak": [
      2,
      "after",
      { "overrides": { "?": "before", ":": "before" } }
    ],
    "padded-blocks": 0,
    "quotes": [2, "double", "avoid-escape"],
    "semi": [2, "always"],
    "semi-spacing": 2,
    "space-before-blocks": 2,
    "space-before-function-paren": [
      2,
      { "anonymous": "always", "named": "never" }
    ],
    "space-in-parens": 0,
    "space-infix-ops": 0,
    "space-unary-ops": 2,
    "spaced-comment": 0
  }
}