Rest API: trouble receiving response through script (browser and Postman display correctly)

Solved by adding .json() to the response like so:

const fetchRestApiData = () => {
      fetch('http://localhost/wptest2/?rest_route=/wp/v2/posts/1', {
          <config removed...>
      })
        .then(response => console.log(response.json(), `=====response.json()=====`));
    };