TS eslint no-unused-vars types example

eslintrc

{
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "rules": {
    "@typescript-eslint/no-unused-vars": "error"
  },
  "parser": "@typescript-eslint/parser",
  "plugins": ["@typescript-eslint"]
}

output.txt

➜  ts-eslint-test ./node_modules/.bin/eslint --ext .ts .

/Users/chris/Documents/Development/ts-eslint-test/types.d.ts
  1:19  error  'MongooseTypes' is defined but never used  @typescript-eslint/no-unused-vars

package.json

{
  "name": "ts-eslint-test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@typescript-eslint/eslint-plugin": "^1.1.1",
    "@typescript-eslint/parser": "^1.1.1",
    "eslint": "^5.12.1",
    "typescript": "^3.2.4"
  },
  "dependencies": {
    "mongoose": "^5.4.7"
  }
}

types.d.ts

import { Types as MongooseTypes } from "mongoose";

declare global {
  namespace MY_TYPES {
    export interface Session {
      _id: MongooseTypes.ObjectId;
      token: string;
    }
  }
}