.eslintrc.json

{
  "env": { "browser": true, "es2022": true, "node": true },
  "parserOptions": { "sourceType": "module", "ecmaVersion": "latest" },
  "rules": {
    "eqeqeq": ["error", "always"],
    "no-loop-func": ["error"],
    "no-self-compare": ["error"],
    "no-unmodified-loop-condition": ["error"],
    "no-useless-concat": ["error"],
    "curly": ["error", "multi-line", "consistent"],
    "consistent-return": [
      "warn",
      {
        "treatUndefinedAsUnspecified": true
      }
    ],
    "no-return-await": ["error"],
    "arrow-body-style": ["error", "as-needed"],
    "arrow-parens": ["error", "always"],
    "arrow-spacing": ["error"],
    "no-useless-computed-key": ["error"],
    "no-useless-rename": ["error"],
    "no-var": ["error"],
    "object-shorthand": ["error", "always"],
    "prefer-arrow-callback": ["error"],
    "prefer-const": ["error"],
    "prefer-numeric-literals": ["error"],
    "prefer-rest-params": ["error"],
    "prefer-spread": ["error"],
    "rest-spread-spacing": ["error", "never"],
    "template-curly-spacing": ["error", "never"],
    "no-unused-private-class-members": ["error"],
    "no-invalid-this": ["error"],
    "class-methods-use-this": ["warn"],
    "handle-callback-err": ["error", "^err"],
    "no-console": ["off"],
    "no-constant-condition": ["error", { "checkLoops": false }],
    "no-return-assign": ["error"],
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1,
        "VariableDeclarator": { "let": 2, "const": 3 },
        "MemberExpression": 1
      }
    ],
    "block-spacing": ["error", "always"],
    "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
    "camelcase": "warn",
    "comma-dangle": ["error", "always-multiline"],
    "comma-spacing": ["error", { "before": false, "after": true }],
    "comma-style": ["error", "last"],
    "eol-last": ["error"],
    "func-call-spacing": ["error", "never"],
    "key-spacing": [
      "error",
      { "beforeColon": false, "afterColon": true, "mode": "minimum" }
    ],
    "keyword-spacing": [
      "error",
      {
        "before": true,
        "after": true,
        "overrides": { "function": { "after": false } }
      }
    ],
    "linebreak-style": ["error", "unix"],
    "max-len": ["error", { "code": 120, "ignoreUrls": true }],
    "max-nested-callbacks": ["error", { "max": 5 }],
    "new-cap": [
      "warn",
      { "newIsCap": true, "capIsNew": true, "properties": true }
    ],
    "new-parens": ["error"],
    "no-lonely-if": ["error"],
    "no-trailing-spaces": ["error"],
    "no-unneeded-ternary": ["error"],
    "no-whitespace-before-property": ["error"],
    "object-curly-spacing": ["error", "always"],
    "operator-assignment": ["error", "always"],
    "operator-linebreak": [
      "error",
      "after",
      { "overrides": { "?": "before", ":": "before" } }
    ],
    "quotes": ["error", "single", { "allowTemplateLiterals": true }],
    "semi": ["error", "always"],
    "semi-spacing": ["error", { "before": false, "after": true }],
    "space-before-blocks": ["error", "always"],
    "space-before-function-paren": [
      "error",
      { "anonymous": "never", "named": "never", "asyncArrow": "always" }
    ],
    "space-in-parens": ["error", "never"],
    "space-infix-ops": ["error"],
    "space-unary-ops": [
      "error",
      { "words": true, "nonwords": false, "overrides": { "typeof": false } }
    ],
    "no-extra-parens": [
      "error",
      "all",
      {
        "returnAssign": false,
        "nestedBinaryExpressions": false,
        "enforceForArrowConditionals": false,
        "allowParensAfterCommentPattern": "@type"
      }
    ],
    "no-shadow-restricted-names": ["error"],
    "no-use-before-define": ["error", { "functions": false }],
    "no-unused-vars": [
      "error",
      { "argsIgnorePattern": "^_", "varsIgnorePattern": "^_" }
    ]
  }
}