.eslintrc.json

{
  "parserOptions": {
    "ecmaVersion": 2020
  },
  "plugins": ["brace-rules"],
  "rules": {
    "no-caller": 1,
    "no-cond-assign": 1,
    "no-constant-condition": ["error", { "checkLoops": false }],
    "no-dupe-args": 1,
    "no-dupe-keys": 1,
    "no-duplicate-case": 1,
    "no-empty": 1,
    "no-extra-boolean-cast": 0,
    "no-extra-parens": 0,
    "no-extra-semi": 1,
    "no-floating-decimal": 1,
    "no-func-assign": 1,
    "no-negated-in-lhs": 1,
    "no-obj-calls": 1,
    "no-unreachable": 1,
    "no-use-before-define": ["error", "nofunc"],
    "use-isnan": 1,
    "valid-jsdoc": 0,
    "valid-typeof": 1,

    "block-scoped-var": 0,
    "consistent-return": 1,
    "default-case": 1,
    "dot-notation": 1,
    "no-else-return": 1,
    "no-invalid-this": 1,
    "no-loop-func": 0,
    "no-multi-spaces": ["warn", { "ignoreEOLComments": true }],
    "no-new": 1,
    "no-redeclare": 0,
    "no-return-assign": 1,
    "no-self-assign": 1,
    "no-self-compare": 1,
    "no-unmodified-loop-condition": 1,
    "no-unused-expressions": 1,
    "no-unused-labels": 1,
    "no-useless-concat": 0,
    "yoda": 1,

    "no-delete-var": 1,
    "no-label-var": 1,
    "no-shadow-restricted-names": 1,
    "no-shadow": 1,
    "no-undef": 0,
    "no-undef-init": 1,
    "no-unused-vars": 0,

    "comma-spacing": 1,
    "indent": ["warn", "tab", { "outerIIFEBody": 0 }],
    "key-spacing": 1,
    "new-cap": 0,
    "new-parens": 1,
    "no-mixed-spaces-and-tabs": ["warn", "smart-tabs"],
    "no-multi-assign": 1,
    "no-trailing-spaces": 1,
    "no-unneeded-ternary": 1,
    "no-irregular-whitespace": 1,
    "object-curly-spacing": ["warn", "always"],
    "operator-assignment": 1,
    "operator-linebreak": ["warn", "after"],
    "quote-props": 1,
    "semi": 1,
    "semi-spacing": 1,
    "space-before-function-paren": ["warn", "never"],
    "space-in-parens": 1,
    "space-unary-ops": 1,
    "spaced-comment": ["warn", "always"],

    "no-class-assign": 1,
    "no-const-assign": 1,
    "no-dupe-class-members": 1,
    "prefer-const": 1,

    "brace-rules/brace-on-same-line": [
      "warn",
      {
        "FunctionDeclaration": "never",
        "FunctionExpression": "ignore",
        "ArrowFunctionExpression": "always",
        "IfStatement": "never",
        "TryStatement": "ignore",
        "CatchClause": "ignore",
        "DoWhileStatement": "never",
        "WhileStatement": "never",
        "ForStatement": "never",
        "ForInStatement": "never",
        "ForOfStatement": "never",
        "SwitchStatement": "never"
      },
      { "allowSingleLine": true }
    ]
  }
}