.eslintrc

{
  "root": true,
  "env": {
    "node": true
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2016,
    "sourceType": "module"
  },
  "plugins": [
    "@typescript-eslint",
    "import",
    "prettier"
  ],
  "extends": [
    "prettier",
    "prettier/@typescript-eslint",
    "plugin:prettier/recommended"
  ],
  "globals": {},
  "rules": {
    // Possible errors
    "no-empty": [ "error", {
      "allowEmptyCatch": true
    }],

    // Best practices
    "curly": [ "error", "all" ],
    "eqeqeq": [ "error", "always", {
      "null": "ignore"
    }],
    "no-caller": "error",
    "no-new": "error",
    "no-with": "error",

    // Stylistic issues
    "brace-style": [ "error", "1tbs", {
      "allowSingleLine": true
    }],
    "comma-dangle": [ "error", "always-multiline" ],
    "comma-style": [ "error", "last" ],
    "func-call-spacing": ["error", "never"],
    "indent": "off",
    // "@typescript-eslint/indent": [ "error", 2, {
    //   "SwitchCase": 1
    // }],
    "no-trailing-spaces": "error",
    "key-spacing": [ "error", {
      "beforeColon": false,
      "afterColon": true
    }],
    "keyword-spacing": "error",
    "new-cap": "error",
    "no-bitwise": "error",
    "space-before-function-paren": [ "error", {
      "anonymous": "ignore",
      "named": "never"
    }],
    "space-infix-ops": "error",
    "space-unary-ops": [ "error", {
      "words": false,
      "nonwords": false
    }],

    // Variables
    "no-use-before-define": [ "error", {
      "functions": false
    }],
    "no-unused-vars": "off",
    "@typescript-eslint/no-unused-vars": "error",

    // ES6+
    "sort-imports": ["error", {
      "ignoreCase": false,
      "ignoreDeclarationSort": true,
      "ignoreMemberSort": false
    }],
    "import/newline-after-import": ["error"],
    "import/order": ["error", {
      "groups": ["builtin", "external", "internal", "parent", "sibling", "index"],
      "newlines-between": "never"
    }],

    // TS-specific
    "@typescript-eslint/member-delimiter-style": ["error", {
      "multiline": {
        "delimiter": "semi",
        "requireLast": true
      },
      "singleline": {
        "delimiter": "semi",
        "requireLast": false
      }
    }],
    "@typescript-eslint/no-require-imports": "error"
  }
}