don't mixup superagent.Response \w fetch.Response

Author: jimmywarting

lib/test.js

@@ -10,6 +10,8 @@ const { Server } = require('https');
 const { deepStrictEqual } = require('assert');
 const { Request } = require('superagent');
 
+/** @typedef {import('superagent').Response} Response */
+
 class Test extends Request {
   /**
    * Initialize a new `Test` with the given `app`,