Whatwg Fetch fails when json parsing an empty response, how can I prevent it?

Question

I\'m using the Fetch API both in the frontend and on the backend (NodeJS), a problem that I\'ve been facing a lot happens when parsing the response as json.

respon

Answer 1

It is easy, just check response body type like below:

var contentType = response.headers.get('content-type')
        if (contentType && contentType.indexOf('application/json') !== -1) {
            return response.json();
        }else{
            //if response is not json and mostly empty
            return({})
        }

it return empty object if response was null