.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly"
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "plugins": [
    "react",
    "@typescript-eslint",
    "only-warn"
  ],
  "settings": {
    "react": {
      "version": "detect"
    }
  },
  "root": true,
  "rules": {
    "@typescript-eslint/adjacent-overload-signatures": "off",
    "@typescript-eslint/ban-types": ["warn", {
      "types": {
        "{}": false
      },
      "extendDefaults": true
    }],
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/explicit-module-boundary-types": "off",
    "@typescript-eslint/indent": ["warn", 2, { 
      "MemberExpression": 0,
      "SwitchCase": 1
    }],
    "@typescript-eslint/no-empty-function": ["warn", { "allow": ["arrowFunctions"] }],
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/no-invalid-void-type": ["warn", { "allowInGenericTypeArguments": true }],
    "@typescript-eslint/no-namespace": "off",
    "@typescript-eslint/no-unused-vars": ["warn", {
      "vars": "all",
      "args": "none"
    }],
    "@typescript-eslint/no-use-before-define": "off",
    "@typescript-eslint/prefer-interface": "off",
    //"react/no-access-state-in-setstate": "warn", (requires restructuring of "app.tsx")
    "react/no-direct-mutation-state": "warn",
    "react/no-render-return-value": "warn",
    "react/no-string-refs": "warn",
    "react/no-unescaped-entities": ["warn", {"forbid": [{
      "char": ">",
      "alternatives": [">"]
    }, {
      "char": "}",
      "alternatives": ["}"]
    }]}],
    "react/no-unused-prop-types": "warn",
    "react/no-unused-state": "warn",
    "curly": ["warn", "all"],
    "eol-last": "warn",
    "for-direction": "warn",
    "getter-return": "warn",
    "keyword-spacing": "warn",
    "no-compare-neg-zero": "warn",
    "no-cond-assign": "warn",
    "no-constant-condition": ["warn", { "checkLoops": false }],
    "no-control-regex": "off",
    "no-debugger": "warn",
    "no-delete-var": "warn",
    "no-dupe-args": "warn",
    "no-dupe-keys": "warn",
    "no-duplicate-case": "warn",
    "no-empty": "warn",
    "no-empty-character-class": "warn",
    "no-empty-pattern": "warn",
    "no-ex-assign": "warn",
    "no-extra-boolean-cast": "warn",
    "no-extra-semi": "warn",
    "no-func-assign": "warn",
    "no-global-assign": "warn",
    "no-inner-declarations": "off",
    "no-invalid-regexp": "warn",
    "no-irregular-whitespace": "warn",
    "no-mixed-spaces-and-tabs": "warn",
    "no-obj-calls": "warn",
    "no-octal": "warn",
    "no-prototype-builtins": "warn",
    "no-redeclare": "warn",
    "no-regex-spaces": "warn",
    "no-self-assign": "warn",
    "no-shadow-restricted-names": "warn",
    "no-spaced-func": "warn",
    "no-sparse-arrays": "warn",
    "no-trailing-spaces": "warn",
    "no-unexpected-multiline": "warn",
    "no-unreachable": "warn",
    "no-unsafe-finally": "warn",
    "no-unsafe-negation": "warn",
    "no-unused-labels": "warn",
    "no-useless-catch": "warn",
    "no-useless-escape": "warn",
    "no-whitespace-before-property": "warn",
    "no-with": "warn",
    "quotes": ["warn", "single"],
    //"require-atomic-updates": "warn", (requires restructuring of "recursiveDirectory()")
    "semi": ["warn", "always"],
    "space-before-blocks": "warn",
    "space-unary-ops": "warn",
    "spaced-comment": "warn",
    "use-isnan": "warn",
    "valid-typeof": "warn",
    "wrap-iife": "warn",
    "yoda": "warn"
  }
}