.eslintrc

{
  "env": {
    "browser": true,
    "es6": true,
    "node": true
  },
  "globals": {
    "document": false,
    "escape": false,
    "navigator": false,
    "unescape": false,
    "window": false
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module",
    "ecmaFeatures": {
      "modules": true
    }
  },
  "plugins": ["prettier"],
  "extends": [
    "eslint:recommended",
    "plugin:import/recommended",
    "plugin:import/typescript",
    "plugin:eslint-comments/recommended",
    "prettier"
  ],
  "rules": {
    "arrow-body-style": "error",
    "array-callback-return": "error",
    "default-case": "error",
    "dot-notation": "error",
    "eslint-comments/disable-enable-pair": "off",
    "eslint-comments/no-unused-disable": "error",
    "eqeqeq": "error",
    "func-names": "error",
    "func-style": "error",
    "import/no-named-as-default": "off",
    "import/order": ["error", {
      "groups": [
        "builtin",
        "external",
        "internal",
        "parent",
        "sibling",
        "index"
      ],
      "newlines-between": "always",
      "alphabetize": {"order": "asc", "caseInsensitive": true}
    }],
    "lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
    "no-await-in-loop": "error",
    "no-console": "off",
    "no-constructor-return": "error",
    "no-continue": "error",
    "no-negated-condition": "error",
    "no-param-reassign": "error",
    "no-return-await": "error",
    "no-prototype-builtins": "off",
    "no-shadow": "error",
    "no-unmodified-loop-condition": "error",
    "no-warning-comments": "error",
    "object-shorthand": "error",
    "one-var": ["error", "never"],
    "operator-assignment": "error",
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "prefer-destructuring": "error",
    "prefer-promise-reject-errors": "error",
    "prettier/prettier": "error",
    "require-atomic-updates": "error",
    "require-await": "error",
    "require-unicode-regexp": "error",
    "sort-imports": "off"
  },
  "overrides": [
    {
      "files": ["*.ts"],
      "parserOptions": {
        "project": "./tsconfig.eslint.json"
      },
      "plugins": ["@typescript-eslint"],
      "extends": [
        "plugin:@typescript-eslint/recommended",
        "plugin:@typescript-eslint/recommended-requiring-type-checking",
        "plugin:@typescript-eslint/strict",
        "prettier"
      ],
      "rules": {
        "no-shadow": "off",
        "no-use-before-define": "off",
        "@typescript-eslint/consistent-type-definitions": ["error", "type"],
        "@typescript-eslint/consistent-type-imports": "error",
        "@typescript-eslint/lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
        "@typescript-eslint/no-non-null-assertion": "off",
        "@typescript-eslint/member-ordering": "error",
        "@typescript-eslint/no-confusing-void-expression": "error",
        "@typescript-eslint/no-require-imports": "error",
        "@typescript-eslint/no-unused-vars": "off",
        "@typescript-eslint/no-use-before-define": "error",
        "@typescript-eslint/prefer-readonly": "error",
        "@typescript-eslint/promise-function-async": "error",
        /**
         * Temporary. The below rules should ideally be enabled, but will require more effort.
         */
        "@typescript-eslint/no-explicit-any": "off",
        "@typescript-eslint/no-misused-promises": "off",
        "@typescript-eslint/no-unnecessary-condition": "off",
        "@typescript-eslint/no-unsafe-argument": "off",
        "@typescript-eslint/no-unsafe-assignment": "off",
        "@typescript-eslint/no-unsafe-call": "off",
        "@typescript-eslint/no-unsafe-member-access": "off",
        "@typescript-eslint/no-unsafe-return": "off",
        "@typescript-eslint/restrict-template-expressions": "off"
      }
    }
  ]
}