.eslintrc.json

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "plugins": [
    "@typescript-eslint",
    "import",
    "simple-import-sort"
  ],
  "parserOptions": {
    "ecmaFeatures": {"impliedStrict": true},
    "ecmaVersion": 2017,
    "sourceType": "module"
  },
  "extends": [
    "eslint:recommended",
    "preact",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "rules": {
    "@typescript-eslint/ban-ts-comment": "off",
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/no-empty-function": "off",
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/no-unused-vars": ["error", {
      "argsIgnorePattern": "^_",
      "caughtErrors": "all",
      "caughtErrorsIgnorePattern": "^_"
    }],
    "array-bracket-spacing": "warn",
    "arrow-body-style": ["error", "as-needed"],
    "arrow-parens": ["warn", "as-needed"],
    "block-scoped-var": "warn",
    "comma-dangle": ["warn", "always-multiline"],
    "comma-spacing": "warn",
    "import/no-cycle": "error",
    "import/no-duplicates": "warn",
    "indent": ["error", 2, {
      "SwitchCase": 1,
      "offsetTernaryExpressions": true
    }],
    "key-spacing": "warn",
    "keyword-spacing": "warn",
    "object-curly-spacing": ["warn", "never"],
    "no-cond-assign": "off",
    "no-console": ["warn", {"allow": ["warn", "error"]}],
    "no-else-return": "off",
    "no-lonely-if": "off",
    "no-multi-spaces": ["warn", {"ignoreEOLComments": true}],
    "no-prototype-builtins": "off",
    "no-spaced-func": "warn",
    "no-unused-vars": "off",
    "no-useless-concat": "warn",
    "no-var": "warn",
    "prefer-arrow-callback": "warn",
    "prefer-template": "off",
    "quote-props": ["warn", "consistent-as-needed"],
    "quotes": ["warn", "double", {
      "avoidEscape": true,
      "allowTemplateLiterals": true
    }],
    "react-hooks/exhaustive-deps": "off",
    "react/no-danger": "off",
    "semi": ["error", "never"],
    "simple-import-sort/imports": ["warn", {"groups": [
      ["^preact", "^@?\\w"],
      ["^\\u0000"],
      ["^"],
      ["^\\."],
      ["\\.module\\.(css|scss|less)$", "\\.(json|svg|png|jpg|jpeg)"]
    ]}],
    "space-before-function-paren": ["warn", {
      "anonymous": "never",
      "named": "never",
      "asyncArrow": "always"
    }],
    "space-in-parens": ["warn", "never"],
    "strict": "error",
    "template-curly-spacing": ["warn", "never"],
    "operator-linebreak": ["warn", "before"]
  },
  "env": {
    "browser": true,
    "es6": true
  }
}