.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "preact",
    "prettier/@typescript-eslint"
  ],
  "ignorePatterns": ["*.d.ts"],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module",
    "project": ["./tsconfig.json"],
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "plugins": ["@typescript-eslint"],
  "env": {
    "browser": true
  },
  "rules": {
    "complexity": ["error", 7],
    "eqeqeq": "error",
    "yoda": "error",
    "no-use-before-define": "off",
    "@typescript-eslint/no-use-before-define": ["error", { "enums": false }],
    "block-spacing": "error",
    "brace-style": "off",
    "@typescript-eslint/brace-style": "error",
    "camelcase": "error",
    "capitalized-comments": "error",
    "comma-dangle": ["error", "always-multiline"],
    "comma-spacing": "off",
    "@typescript-eslint/comma-spacing": "error",
    "comma-style": "error",
    "computed-property-spacing": "error",
    "func-call-spacing": "off",
    "@typescript-eslint/func-call-spacing": "error",
    "func-style": "error",
    "implicit-arrow-linebreak": "error",
    "indent": "off",
    "@typescript-eslint/indent": ["error", 2],
    "jsx-quotes": "error",
    "keyword-spacing": "error",
    "line-comment-position": "error",
    "lines-between-class-members": "error",
    "max-depth": ["error", 3],
    "max-lines-per-function": ["error", 50],
    "max-statements-per-line": "error",
    "multiline-comment-style": "error",
    "multiline-ternary": ["error", "always-multiline"],
    "no-multiple-empty-lines": ["error", { "max": 1 }],
    "no-nested-ternary": "error",
    "no-trailing-spaces": "error",
    "no-unneeded-ternary": "error",
    "no-whitespace-before-property": "error",
    "nonblock-statement-body-position": "error",
    "object-curly-newline": ["error"],
    "object-curly-spacing": ["error", "always"],
    "one-var-declaration-per-line": "error",
    "operator-linebreak": ["error"],
    "padded-blocks": ["error", "never"],
    "quotes": "off",
    "@typescript-eslint/quotes": "error",
    "semi": "off",
    "@typescript-eslint/semi": ["error", "always"],
    "semi-spacing": "error",
    "semi-style": "error",
    "space-before-blocks": "error",
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "spaced-comment": "error",
    "switch-colon-spacing": "error",
    "arrow-body-style": "error",
    "arrow-parens": "error",
    "arrow-spacing": "error",
    "no-confusing-arrow": "error",
    "no-duplicate-imports": "error",
    "no-useless-constructor": "off",
    "@typescript-eslint/no-useless-constructor": "error",
    "no-var": "error",
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-template": "error",
    "template-curly-spacing": "error",
    "@typescript-eslint/require-await": "error",
    "@typescript-eslint/array-type": ["error", { "default": "array-simple" }],
    "@typescript-eslint/await-thenable": "error",
    "@typescript-eslint/ban-ts-comment": "error",
    "@typescript-eslint/class-literal-property-style": "error",
    "@typescript-eslint/consistent-type-definitions": ["error", "interface"],
    "@typescript-eslint/explicit-function-return-type": [
      "error",
      { "allowExpressions": true }
    ],
    "@typescript-eslint/explicit-member-accessibility": [
      "error",
      { "accessibility": "explicit" }
    ],
    "@typescript-eslint/member-delimiter-style": "error",
    "@typescript-eslint/member-ordering": "error",
    "@typescript-eslint/method-signature-style": "error",
    "@typescript-eslint/no-base-to-string": "error",
    "@typescript-eslint/no-explicit-any": "error",
    "@typescript-eslint/no-floating-promises": "error",
    "@typescript-eslint/no-for-in-array": "error",
    "@typescript-eslint/no-implied-eval": "error",
    "@typescript-eslint/no-throw-literal": "error",
    "@typescript-eslint/no-unnecessary-boolean-literal-compare": "error",
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        "args": "after-used",
        "varsIgnorePattern": "^(h)$",
        "caughtErrors": "all"
      }
    ],
    "@typescript-eslint/no-unsafe-call": "error",
    "@typescript-eslint/prefer-for-of": "error",
    "@typescript-eslint/prefer-nullish-coalescing": "error",
    "@typescript-eslint/prefer-optional-chain": "error",
    "@typescript-eslint/prefer-readonly": "error",
    "@typescript-eslint/promise-function-async": "error",
    "@typescript-eslint/switch-exhaustiveness-check": "error"
  }
}