.eslintrc

{
  "root": true,
  "env": {
    "node": true
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2016,
    "sourceType": "module"
  },
  "plugins": ["@typescript-eslint", "import", "prettier"],
  "extends": ["prettier"],
  "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"
  }
}