.eslintrc.json

{
  "env": {
    "commonjs": true,
    "es2021": true,
    "node": true
  },
  "extends": "eslint:recommended",
  "parserOptions": {
    "ecmaFeatures": {
      "impliedStrict": true
    }
  },
  "plugins": [
    "json"
  ],
  "rules": {
    "arrow-parens": ["error", "as-needed"],
    "block-scoped-var": "error",
    "brace-style": ["error", "1tbs", {"allowSingleLine": true}],
    "camelcase": "off",
    "comma-dangle": ["error", "never"],
    "comma-spacing": ["error", {"before": false, "after": true}],
    "comma-style": ["error", "last"],
    "computed-property-spacing": ["error", "never"],
    "curly": ["error", "multi-line"],
    "dot-location": ["error", "property"],
    "dot-notation": "error",
    "eol-last": "error",
    "eqeqeq": "error",
    "func-style": ["error", "declaration", {"allowArrowFunctions": true}],
    "indent": ["error", "tab"],
    "keyword-spacing": "error",
    "key-spacing": ["error", {"beforeColon": false, "afterColon": true}],
    "linebreak-style": ["error", "unix"],
    "max-len": ["error", 131, 3],
    "max-nested-callbacks": ["error", {"max": 3}],
    "new-cap": "error",
    "new-parens": "error",
    "no-console": "off",
    "no-eval": "error",
    "no-extra-bind": "error",
    "no-floating-decimal": "error",
    "no-implied-eval": "error",
    "no-labels": "error",
    "no-lonely-if": "error",
    "no-loop-func": "error",
    "no-multi-spaces": "error",
    "no-multiple-empty-lines": ["error", {"max": 1}],
    "no-nested-ternary": "error",
    "no-new-require": "error",
    "no-sequences": "error",
    "no-shadow-restricted-names": "error",
    "no-shadow": "error",
    "no-spaced-func": "error",
    "no-sync": "error",
    "no-trailing-spaces": ["error", {"skipBlankLines": false}],
    "no-undef-init": "error",
    "no-use-before-define": ["error", {"functions": false}],
    "object-curly-spacing": ["error", "never"],
    "padding-line-between-statements": [
      "error",
      {"blankLine": "always", "prev": "*", "next": ["function", "for", "while", "do", "if", "switch", "return"]},
      {"blankLine": "any", "prev": "if", "next": "if"},
      {"blankLine": "always", "prev": "block-like", "next": "*"},
      {"blankLine": "always", "prev": "multiline-block-like", "next": "*"},
      {"blankLine": "always", "prev": ["const", "let", "var"], "next": "*"},
      {"blankLine": "never", "prev": "const", "next": "const"},
      {"blankLine": "never", "prev": "let", "next": "let"},
      {"blankLine": "never", "prev": "var", "next": "var"}
    ],
    "prefer-arrow-callback": "error",
    "quotes": ["error", "single"],
    "semi-spacing": ["error", {"before": false, "after": true}],
    "semi": ["error", "always"],
    "space-before-blocks": "error",
    "space-before-function-paren": ["error", "never"],
    "space-in-parens": ["error", "never"],
    "space-unary-ops": ["error", {"words": true, "nonwords": false}],
    "spaced-comment": ["error", "always"]
  }
}