.eslintrc

{
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true,
      "modules": true
    },
    "project": "./tsconfig.json"
  },
  "plugins": ["react", "@typescript-eslint/eslint-plugin"],
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "prettier",
    "prettier/@typescript-eslint",
    "prettier/react"
  ],
  "env": {
    "browser": true,
    "node": true,
    "es6": true,
    "jest": true
  },
  "rules": {
    // Common js rules
    "camelcase": 2,
    "no-extend-native": 2,
    "no-proto": 2,
    "no-caller": 2,
    "no-unused-vars": 0,
    "new-cap": 2,
    "max-depth": [2, 5],
    "max-statements": [2, 60],
    "no-eq-null": 2,
    "wrap-iife": 2,
    "spaced-comment": 2,
    "no-cond-assign": ["error", "always"],
    "no-alert": 2,
    "no-console": 2,

    // NodeJs rules
    "block-scoped-var": 2,
    "global-require": 2,
    "no-mixed-requires": 2,
    "no-new-require": 2,

    // ES6 rules
    "no-var": 2,
    "prefer-const": 2,

    // React
    "react/prop-types": 0,
    "react/no-danger": 2,
    "react/no-deprecated": 2,

    // override typescript-eslint rules
    "@typescript-eslint/indent": 0,
    "@typescript-eslint/member-delimiter-style": 0,
    "@typescript-eslint/explicit-member-accessibility": 0,
    "@typescript-eslint/no-require-imports": 2,
    "@typescript-eslint/no-unnecessary-type-assertion": 2,
    "@typescript-eslint/no-unused-vars": [2, { "vars": "all", "args": "none" }],
    "@typescript-eslint/restrict-plus-operands": 2,
    "@typescript-eslint/array-type": [2, { "default": "array-simple" }],
    "@typescript-eslint/explicit-function-return-type": 0,
    "@typescript-eslint/ban-types": [
      2,
      {
        "types": {
          "Function": "Use proper function definition with arguments and return type instead",
          "String": "Use string instead",
          "Number": "Use number instead",
          "Boolean": "Use boolean instead"
        }
      }
    ]
  },
  "settings": {
    "react": {
      "version": "16.9.0"
    }
  }
}