.eslintrc

{
  "parserOptions": {
    "ecmaVersion": 8,
    "ecmaFeatures": {
      "impliedStrict": true
    }
  },
  "extends": [
    "eslint:recommended",
    "google"
  ],
  "env": {
    "es6": true,
    "browser": true,
    "node": true,
    "commonjs": true,
    "shared-node-browser": true,
    "mocha": true
  },
  "rules": {
    "array-callback-return": [
      "error"
    ],
    "arrow-body-style": [
      "error",
      "as-needed"
    ],
    "arrow-parens": [
      "error",
      "as-needed"
    ],
    "arrow-spacing": [
      "error",
      {
        "before": true,
        "after": true
      }
    ],
    "camelcase": [
      "error",
      {
        "properties": "always"
      }
    ],
    "curly": [
      "error",
      "all"
    ],
    "dot-location": [
      "error",
      "property"
    ],
    "dot-notation": [
      "error"
    ],
    "eqeqeq": [
      "error",
      "always"
    ],
    "func-names": [
      "error",
      "as-needed"
    ],
    "func-style": [
      "error",
      "expression"
    ],
    "global-require": [
      "error"
    ],
    "handle-callback-err": [
      "error"
    ],
    "id-length": [
      "error",
      {
        "min": 2,
        "exceptions": ["i", "j"]
      }
    ],
    "indent": [
      "error",
      4,
      {
        "SwitchCase": 1
      }
    ],
    "max-depth": [
      "error",
      4
    ],
    "max-len": [
      "error",
      120,
      4,
      {
        "ignoreComments": true,
        "ignoreUrls": true,
        "ignoreTrailingComments": true,
        "ignoreStrings": true,
        "ignoreRegExpLiterals": true,
        "ignorePattern": "true"
      }
    ],
    "max-nested-callbacks": [
      "error",
      2
    ],
    "max-params": [
      "error",
      5
    ],
    "multiline-ternary": [
      "error",
      "always-multiline"
    ],
    "new-parens": [
      "error"
    ],
    "newline-per-chained-call": [
      "error",
      {
        "ignoreChainWithDepth": 3
      }
    ],
    "no-alert": [
      "error"
    ],
    "no-cond-assign": [
      "error"
    ],
    "no-confusing-arrow": [
      "error",
      {
        "allowParens": true
      }
    ],
    "no-duplicate-imports": [
      "error"
    ],
    "no-else-return": [
      "error"
    ],
    "no-empty-function": [
      "error"
    ],
    "no-eq-null": [
      "error"
    ],
    "no-eval": [
      "error"
    ],
    "no-extra-label": [
      "error"
    ],
    "no-floating-decimal": [
      "error"
    ],
    "no-implicit-coercion": [
      "error",
      {
        "boolean": false,
        "number": false,
        "string": false
      }
    ],
    "no-inline-comments": [
      "error"
    ],
    "no-iterator": [
      "error"
    ],
    "no-label-var": [
      "error"
    ],
    "no-lone-blocks": [
      "error"
    ],
    "no-lonely-if": [
      "error"
    ],
    "no-loop-func": [
      "error"
    ],
    "no-multi-assign": [
      "error"
    ],
    "no-negated-condition": [
      "error"
    ],
    "no-nested-ternary": [
      "error"
    ],
    "no-new": [
      "error"
    ],
    "no-new-func": [
      "error"
    ],
    "no-new-require": [
      "error"
    ],
    "no-prototype-builtins": [
      "error"
    ],
    "no-restricted-syntax": [
      "error"
    ],
    "no-proto": [
      "error"
    ],
    "no-return-assign": [
      "error"
    ],
    "no-return-await": [
      "error"
    ],
    "no-script-url": [
      "error"
    ],
    "no-self-compare": [
      "error"
    ],
    "no-sequences": [
      "error"
    ],
    "no-shadow-restricted-names": [
      "error"
    ],
    "no-template-curly-in-string": [
      "off"
    ],
    "no-throw-literal": [
      "off"
    ],
    "no-undef-init": [
      "error"
    ],
    "no-undefined": [
      "error"
    ],
    "no-unmodified-loop-condition": [
      "error"
    ],
    "no-unneeded-ternary": [
      "error"
    ],
    "no-unused-expressions": [
      "error",
      {
        "allowShortCircuit": true,
        "allowTernary": true,
        "allowTaggedTemplates": true
      }
    ],
    "no-use-before-define": [
      "error"
    ],
    "no-useless-call": [
      "error"
    ],
    "no-useless-computed-key": [
      "error"
    ],
    "no-useless-concat": [
      "error"
    ],
    "no-useless-constructor": [
      "error"
    ],
    "no-useless-escape": [
      "off"
    ],
    "no-useless-rename": [
      "error"
    ],
    "no-useless-return": [
      "error"
    ],
    "no-void": [
      "error"
    ],
    "no-whitespace-before-property": [
      "error"
    ],
    "object-shorthand": [
      "error",
      "always"
    ],
    "prefer-arrow-callback": [
      "error",
      {
        "allowNamedFunctions": false,
        "allowUnboundThis": false
      }
    ],
    "prefer-const": [
      "error",
      {
        "ignoreReadBeforeAssign": false
      }
    ],
    "prefer-destructuring": [
      "error",
      {
        "VariableDeclarator": {
          "array": false,
          "object": true
        },
        "AssignmentExpression": {
          "array": true,
          "object": false
        }
      },
      {
        "enforceForRenamedProperties": false
      }
    ],
    "prefer-template": [
      "error"
    ],
    "radix": [
      "error"
    ],
    "require-await": [
      "error"
    ],
    "require-jsdoc": [
      "error",
      {
        "require": {
          "FunctionDeclaration": true,
          "MethodDefinition": true,
          "ClassDeclaration": true,
          "ArrowFunctionExpression": false
        }
      }
    ],
    "semi-style": [
      "error",
      "last"
    ],
    "spaced-comment": [
      "error",
      "always",
      {
        "exceptions": [
          "-",
          "+",
          "=",
          "*"
        ]
      }
    ],
    "space-in-parens": [
      "error",
      "never"
    ],
    "space-infix-ops": [
      "error"
    ],
    "symbol-description": [
      "warn"
    ],
    "template-curly-spacing": [
      "error",
      "never"
    ],
    "template-tag-spacing": [
      "error"
    ],
    "valid-jsdoc": [
      "error",
      {
        "requireReturn": false
      }
    ],
    "wrap-iife": [
      "error",
      "outside",
      {
        "functionPrototypeMethods": true
      }
    ]
  }
}