.eslintrc

{
  "env": {
    "browser": false,
    "es6": true,
    "node": true
  },
  "rules": {
    "accessor-pairs": "error",
    "array-bracket-spacing": [
      "error",
      "never"
    ],
    "array-callback-return": "error",
    "array-bracket-newline": [
      "error",
      {
        "multiline": true
      }
    ],
    "array-element-newline": [
      "error",
      "always"
    ],
    "arrow-body-style": [
      "error",
      "always"
    ],
    "arrow-parens": [
      "error",
      "always"
    ],
    "arrow-spacing": "error",
    "block-scoped-var": "error",
    "block-spacing": "error",
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "callback-return": [
      "error",
      [
        "callback",
        "cb",
        "next"
      ]
    ],
    "camelcase": "off",
    "capitalized-comments": [
      "error",
      "never",
      {
        "ignorePattern": "TODO"
      }
    ],
    "class-methods-use-this": "error",
    "comma-dangle": [
      "error",
      "never"
    ],
    "comma-spacing": "error",
    "comma-style": [
      "error",
      "last"
    ],
    "complexity": [
      "error",
      11
    ],
    "computed-property-spacing": [
      "error",
      "never"
    ],
    "consistent-return": "error",
    "consistent-this": [
      "error",
      "self"
    ],
    "constructor-super": "error",
    "curly": [
      "error",
      "all"
    ],
    "default-case": "error",
    "dot-location": [
      "error",
      "property"
    ],
    "dot-notation": [
      "error",
      {
        "allowKeywords": true
      }
    ],
    "eol-last": "error",
    "eqeqeq": [
      "error",
      "always"
    ],
    "for-direction": "error",
    "func-call-spacing": [
      "error",
      "never"
    ],
    "func-name-matching": [
      "error",
      {
        "includeCommonJSModuleExports": true
      }
    ],
    "func-names": "error",
    "func-style": [
      "error",
      "declaration"
    ],
    "function-paren-newline": "error",
    "generator-star-spacing": "error",
    "getter-return": "error",
    "global-require": "error",
    "guard-for-in": "error",
    "handle-callback-err": "error",
    "id-blacklist": [
      "error",
      "err",
      "e",
      "req",
      "res",
      "cb",
      "callback"
    ],
    "id-length": [
      "error",
      {
        "min": 2
      }
    ],
    "id-match": [
      "off",
      "^[a-z]+([A-Z][a-z]+)*$",
      {
        "properties": true
      }
    ],
    "implicit-arrow-linebreak": [
      "error",
      "beside"
    ],
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1
      }
    ],
    "init-declarations": [
      "error",
      "always"
    ],
    "jsx-quotes": [
      "error",
      "prefer-single"
    ],
    "key-spacing": [
      "error",
      {
        "beforeColon": false,
        "afterColon": true
      }
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "line-comment-position": [
      "error",
      {
        "position": "above"
      }
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "lines-around-comment": [
      "error",
      {
        "beforeBlockComment": true,
        "afterBlockComment": false,
        "beforeLineComment": false,
        "afterLineComment": false,
        "allowBlockStart": true,
        "allowBlockEnd": false,
        "allowObjectStart": true,
        "allowObjectEnd": false,
        "allowArrayStart": true,
        "allowArrayEnd": false
      }
    ],
    "lines-around-directive": [
      "error",
      "always"
    ],
    "lines-between-class-members": [
      "error",
      "always"
    ],
    "max-classes-per-file": ["error", 1],
    "max-depth": [
      "error",
      4
    ],
    "max-len": [
      "error",
      130,
      2,
      {
        "ignoreComments": true,
        "ignoreTrailingComments": true,
        "ignoreUrls": true,
        "ignoreStrings": true,
        "ignoreTemplateLiterals": true,
        "ignoreRegExpLiterals": true
      }
    ],
    "max-lines": [
      "error",
      130
    ],
    "max-lines-per-function": ["error", 20],
    "max-nested-callbacks": [
      "error",
      3
    ],
    "max-params": [
      "error",
      4
    ],
    "max-statements": [
      "error",
      15
    ],
    "max-statements-per-line": [
      "error",
      {
        "max": 1
      }
    ],
    "multiline-comment-style": [
      "error",
      "separate-lines"
    ],
    "new-cap": [
      "error",
      {
        "newIsCap": true,
        "newIsCapExceptions": [],
        "capIsNew": true,
        "capIsNewExceptions": []
      }
    ],
    "new-parens": "error",
    "newline-after-var": [
      "off",
      "always"
    ],
    "newline-before-return": "off",
    "newline-per-chained-call": "error",
    "no-alert": "error",
    "no-array-constructor": "error",
    "no-await-in-loop": "error",
    "no-bitwise": "error",
    "no-buffer-constructor": "error",
    "no-caller": "error",
    "no-case-declarations": "error",
    "no-catch-shadow": "error",
    "no-class-assign": "error",
    "no-compare-neg-zero": "error",
    "no-cond-assign": [
      "error",
      "always"
    ],
    "no-confusing-arrow": [
      "error",
      {
        "allowParens": true
      }
    ],
    "no-console": "error",
    "no-const-assign": "error",
    "no-constant-condition": "error",
    "no-continue": "error",
    "no-control-regex": "error",
    "no-debugger": "error",
    "no-delete-var": "error",
    "no-div-regex": "error",
    "no-dupe-args": "error",
    "no-dupe-class-members": "error",
    "no-dupe-keys": "error",
    "no-duplicate-case": "error",
    "no-duplicate-imports": [
      "error",
      {
        "includeExports": true
      }
    ],
    "no-else-return": "error",
    "no-empty": [
      "error",
      {
        "allowEmptyCatch": true
      }
    ],
    "no-empty-character-class": "error",
    "no-empty-function": "error",
    "no-empty-pattern": "error",
    "no-eq-null": "error",
    "no-eval": "error",
    "no-ex-assign": "error",
    "no-extend-native": "error",
    "no-extra-bind": "error",
    "no-extra-boolean-cast": "error",
    "no-extra-label": "error",
    "no-extra-parens": "error",
    "no-extra-semi": "error",
    "no-fallthrough": "error",
    "no-floating-decimal": "error",
    "no-func-assign": "error",
    "no-global-assign": "error",
    "no-implicit-coercion": [
      "error",
      {
        "allow": [
          "!!"
        ]
      }
    ],
    "no-implicit-globals": "error",
    "no-implied-eval": "error",
    "no-inline-comments": "error",
    "no-inner-declarations": [
      "error",
      "functions"
    ],
    "no-invalid-regexp": "error",
    "no-invalid-this": "error",
    "no-irregular-whitespace": "error",
    "no-iterator": "error",
    "no-label-var": "error",
    "no-labels": [
      "error",
      {
        "allowLoop": true,
        "allowSwitch": true
      }
    ],
    "no-lone-blocks": "error",
    "no-lonely-if": "error",
    "no-loop-func": "error",
    "no-magic-numbers": [
      "off",
      {
        "enforceConst": true,
        "ignoreArrayIndexes": true,
        "ignore": []
      }
    ],
    "no-mixed-operators": "off",
    "no-mixed-requires": [
      "error",
      false
    ],
    "no-mixed-spaces-and-tabs": [
      "error",
      false
    ],
    "no-multi-assign": "error",
    "no-multi-spaces": "error",
    "no-multi-str": "error",
    "no-multiple-empty-lines": [
      "error",
      {
        "max": 1
      }
    ],
    "no-native-reassign": "error",
    "no-negated-condition": "error",
    "no-negated-in-lhs": "error",
    "no-nested-ternary": "error",
    "no-new": "error",
    "no-new-func": "error",
    "no-new-object": "error",
    "no-new-require": "error",
    "no-new-symbol": "error",
    "no-new-wrappers": "error",
    "no-obj-calls": "error",
    "no-octal": "error",
    "no-octal-escape": "error",
    "no-param-reassign": "error",
    "no-path-concat": "error",
    "no-plusplus": [
      "error",
      {
        "allowForLoopAfterthoughts": true
      }
    ],
    "no-process-env": "error",
    "no-process-exit": "error",
    "no-proto": "error",
    "no-redeclare": "error",
    "no-regex-spaces": "error",
    "no-restricted-globals": [
      "error",
      "event"
    ],
    "no-restricted-imports": "off",
    "no-restricted-modules": "error",
    "no-restricted-properties": "error",
    "no-restricted-syntax": "error",
    "no-return-assign": [
      "error",
      "always"
    ],
    "no-return-await": "error",
    "no-script-url": "error",
    "no-self-assign": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-shadow": "error",
    "no-shadow-restricted-names": "error",
    "no-spaced-func": "error",
    "no-sparse-arrays": "error",
    "no-sync": "error",
    "no-tabs": "error",
    "no-template-curly-in-string": "off",
    "no-ternary": "off",
    "no-this-before-super": "error",
    "no-throw-literal": "error",
    "no-trailing-spaces": "error",
    "no-undef": [
      "error",
      {
        "typeof": true
      }
    ],
    "no-undef-init": "error",
    "no-undefined": "error",
    "no-underscore-dangle": "off",
    "no-unexpected-multiline": "error",
    "no-unmodified-loop-condition": "error",
    "no-unneeded-ternary": "error",
    "no-unreachable": "error",
    "no-unsafe-finally": "error",
    "no-unsafe-negation": "error",
    "no-unused-expressions": "error",
    "no-unused-labels": "error",
    "no-unused-vars": [
      "error",
      {
        "vars": "all",
        "args": "after-used"
      }
    ],
    "no-use-before-define": [
      "error",
      "nofunc"
    ],
    "no-useless-call": "error",
    "no-useless-computed-key": "error",
    "no-useless-concat": "error",
    "no-useless-constructor": "error",
    "no-useless-escape": "error",
    "no-useless-rename": "error",
    "no-var": "error",
    "no-void": "error",
    "no-warning-comments": [
      "warn",
      {
        "terms": [
          "todo",
          "fixme",
          "xxx"
        ],
        "location": "anywhere"
      }
    ],
    "no-whitespace-before-property": "error",
    "no-with": "error",
    "nonblock-statement-body-position": "off",
    "object-curly-newline": [
      "off",
      "always"
    ],
    "object-curly-spacing": [
      "error",
      "never"
    ],
    "object-property-newline": "error",
    "object-shorthand": "error",
    "one-var": [
      "error",
      "never"
    ],
    "one-var-declaration-per-line": [
      "error",
      "always"
    ],
    "operator-assignment": [
      "error",
      "always"
    ],
    "operator-linebreak": [
      "error",
      "after"
    ],
    "padded-blocks": [
      "error",
      "never"
    ],
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-destructuring": [
      "off",
      {
        "array": true,
        "object": true
      },
      {
        "enforceForRenamedProperties": false
      }
    ],
    "prefer-numeric-literals": "error",
    "prefer-object-spread": "error",
    "prefer-promise-reject-errors": [
      "error",
      {
        "allowEmptyReject": true
      }
    ],
    "prefer-reflect": "off",
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "quote-props": [
      "error",
      "as-needed"
    ],
    "quotes": [
      "error",
      "single",
      {
        "avoidEscape": true,
        "allowTemplateLiterals": true
      }
    ],
    "radix": [
      "error",
      "as-needed"
    ],
    "require-await": "error",
    "require-jsdoc": "off",
    "require-yield": "error",
    "rest-spread-spacing": [
      "error",
      "never"
    ],
    "semi": [
      "error",
      "always"
    ],
    "semi-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "semi-style": [
      "error",
      "last"
    ],
    "sort-imports": "off",
    "sort-keys": "off",
    "sort-vars": "off",
    "space-before-blocks": [
      "error",
      "always"
    ],
    "space-before-function-paren": [
      "error",
      {
        "anonymous": "always",
        "named": "never",
        "asyncArrow": "always"
      }
    ],
    "space-in-parens": [
      "error",
      "never"
    ],
    "space-infix-ops": "error",
    "space-unary-ops": [
      "error",
      {
        "words": true,
        "nonwords": false
      }
    ],
    "spaced-comment": [
      "error",
      "always"
    ],
    "strict": [
      "error",
      "safe"
    ],
    "switch-colon-spacing": [
      "error",
      {
        "after": true,
        "before": false
      }
    ],
    "symbol-description": "error",
    "template-curly-spacing": [
      "error",
      "never"
    ],
    "template-tag-spacing": [
      "error",
      "never"
    ],
    "unicode-bom": [
      "error",
      "never"
    ],
    "use-isnan": "error",
    "valid-jsdoc": "off",
    "valid-typeof": "error",
    "vars-on-top": "off",
    "wrap-iife": [
      "error",
      "outside"
    ],
    "wrap-regex": "error",
    "yield-star-spacing": "error",
    "yoda": [
      "error",
      "never"
    ]
  }
}