.eslintrc.js

module.exports = {
  extends: ["eslint:recommended"],
  env: {
    node: true,
    es6: true
  },
  parserOptions: {
    ecmaVersion: 2017,
    sourceType: "module"
  },
  plugins: ["promise", "node"],
  rules: {
    "no-extra-parens": ["warn", "all", { nestedBinaryExpressions: false }],
    "accessor-pairs": "warn",
    "array-callback-return": "error",
    complexity: "off",
    curly: ["error", "multi-line", "consistent"],
    "dot-location": ["error", "property"],
    "dot-notation": "error",
    eqeqeq: "error",
    "no-console": [
      "error",
      {
        allow: ["log", "warn", "error"]
      }
    ],
    "no-empty-function": "error",
    "no-floating-decimal": "error",
    "no-implied-eval": "error",
    "no-invalid-this": "off",
    "no-lone-blocks": "error",
    "no-multi-spaces": "error",
    "no-new-func": "error",
    "no-new-wrappers": "error",
    "no-new": "error",
    "no-octal-escape": "error",
    "no-return-assign": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-unmodified-loop-condition": "error",
    "no-unused-expressions": "error",
    "no-unused-vars": "warn",
    "no-useless-call": "error",
    "no-useless-escape": "error",
    "no-useless-concat": "error",
    "no-void": "error",
    "no-warning-comments": "warn",
    "wrap-iife": "error",
    yoda: "error",
    "no-label-var": "error",
    "no-shadow": "error",
    "no-undef-init": "error",
    "callback-return": "error",
    "handle-callback-err": "error",
    "no-mixed-requires": "error",
    "no-new-require": "error",
    "no-path-concat": "error",
    "no-process-env": "off",
    "array-bracket-spacing": "error",
    "block-spacing": "error",
    "brace-style": ["error", "1tbs", { allowSingleLine: true }],
    "comma-dangle": "error",
    "comma-spacing": "error",
    "comma-style": "error",
    "computed-property-spacing": "error",
    "consistent-this": "error",
    "eol-last": "error",
    "func-names": "error",
    "func-style": ["error", "declaration", { allowArrowFunctions: true }],
    indent: ["error", 2, { SwitchCase: 1 }],
    "key-spacing": "error",
    "keyword-spacing": [
      "error",
      {
        overrides: {
          if: { after: true },
          for: { after: true },
          while: { after: true },
          catch: { after: true },
          switch: { after: true }
        }
      }
    ],
    "max-depth": "error",
    "max-len": ["error", 1500, 2],
    "max-nested-callbacks": ["error", { max: 4 }],
    "max-statements-per-line": ["error", { max: 2 }],
    "new-cap": "error",
    "newline-per-chained-call": ["error", { ignoreChainWithDepth: 6 }],
    "no-array-constructor": "error",
    "no-bitwise": "warn",
    "no-inline-comments": "error",
    "no-lonely-if": "error",
    "no-mixed-operators": "off",
    "no-multiple-empty-lines": [
      "error",
      {
        max: 2,
        maxEOF: 1,
        maxBOF: 0
      }
    ],
    "no-new-object": "error",
    "no-spaced-func": "error",
    "no-trailing-spaces": "error",
    "no-unneeded-ternary": "error",
    "no-whitespace-before-property": "error",
    "object-curly-newline": "error",
    "object-curly-spacing": ["error", "always"],
    "operator-assignment": "error",
    "operator-linebreak": ["error", "after"],
    "padded-blocks": [
      "error",
      {
        classes: "always",
        blocks: "never",
        switches: "never"
      }
    ],
    "quote-props": ["error", "as-needed"],
    quotes: [
      "error",
      "double",
      {
        avoidEscape: true,
        allowTemplateLiterals: true
      }
    ],
    "semi-spacing": "error",
    semi: "error",
    "space-before-blocks": "error",
    "space-before-function-paren": [
      "error",
      {
        anonymous: "always",
        named: "never",
        asyncArrow: "always"
      }
    ],
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "space-unary-ops": "error",
    "spaced-comment": "error",
    "unicode-bom": "error",
    "arrow-body-style": "error",
    "arrow-spacing": "error",
    "no-duplicate-imports": "error",
    "no-useless-computed-key": "error",
    "no-useless-constructor": "error",
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-destructuring": [
      "off",
      {
        VariableDeclarator: {
          array: false,
          object: true
        },
        AssignmentExpression: {
          array: true,
          object: true
        }
      },
      { enforceForRenamedProperties: false }
    ],
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "prefer-template": "error",
    "rest-spread-spacing": "error",
    "template-curly-spacing": "error",
    "yield-star-spacing": "error",
    "promise/no-return-wrap": "error",
    "promise/catch-or-return": "error",
    "promise/no-native": "off",
    "promise/no-nesting": "warn",
    "promise/no-promise-in-callback": "warn",
    "promise/no-callback-in-promise": "warn",
    "promise/no-return-in-finally": "warn",
    "node/no-missing-require": "off",
    "node/no-unpublished-bin": "error",
    "node/no-deprecated-api": "error",
    "node/exports-style": ["error", "module.exports"],
    "no-var": "error",
    "arrow-parens": ["error", "as-needed"]
  }
};