.eslintrc

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "tsconfig.json"
  },
  "plugins": ["@typescript-eslint", "mocha-no-only"],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "plugin:import/errors",
    "plugin:import/warnings",
    "plugin:import/typescript",
    "prettier", // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
    "plugin:prettier/recommended" // Enables eslint-plugin-prettier and displays prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
  ],
  "rules": {
    "no-console": "warn",
    "import/no-named-as-default": "off",
    "no-plusplus": "off",

    "@typescript-eslint/require-await": "off",
    "@typescript-eslint/array-type": ["error", {"default": "generic"}],
    "@typescript-eslint/strict-boolean-expressions": [
      "error",
      {
        "allowString": false,
        "allowNullableObject": true,
        "allowNullableBoolean": false,
        "allowNullableString": false
      }
    ],
    "@typescript-eslint/await-thenable": ["error"],
    "no-unused-vars": "off",
    "@typescript-eslint/no-unused-vars": [
      "warn",
      {
        "argsIgnorePattern": "^_"
      }
    ],
    "@typescript-eslint/no-use-before-define": ["error", {"functions": false}],
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/no-floating-promises": "error",
    "@typescript-eslint/no-throw-literal": "error",
    "@typescript-eslint/restrict-plus-operands": "error",
    "@typescript-eslint/no-this-alias": "error",
    "@typescript-eslint/no-var-requires": "warn",

    "import/no-extraneous-dependencies": ["error"],
    "object-shorthand": "error",
    "radix": "error",
    "no-unsafe-finally": "error",
    "no-return-await": "error",
    "default-case": "error",
    "no-template-curly-in-string": "error",

    // Some import rules are turned off as TS already checks these and they are pretty slow
    // https://github.com/typescript-eslint/typescript-eslint/blob/master/docs/getting-started/linting/FAQ.md#eslint-plugin-import
    "import/named": "off",
    "import/namespace": "off",
    "import/default": "off",
    "import/no-named-as-default-member": "off",

    "import/order": [
      "error",
      {
        "newlines-between": "ignore",
        "groups": [["builtin", "external"], "parent", "sibling", "index"],
        "alphabetize": {
          "order": "asc"
        }
      }
    ],
    "mocha-no-only/mocha-no-only": ["error"]
  }
}