Unable to parse JSON

[shoulderface]

When I am sending JSON from my backend to my application, I am getting blobs instead of the JSON I am expecting. When I stringify the error I am getting, I get:

  "graphQLErrors": [
    
  ],
  "networkError": {
    "name": "ServerParseError",
    "response": {
      "type": "default",
      "status": 200,
      "ok": true,
      "statusText": "OK",
      "headers": {
        "map": {
          "content-type": "application/json"
        }
      },
      "url": "http://xxxxxxx.ngrok.io/graphql",
      "_bodyInit": {
        
      },
      "_bodyText": "[object Blob]",
      "bodyUsed": true
    },
    "statusCode": 200,
    "bodyText": "[object Blob]"
  },
  "message": "Network error: Unexpected token o in JSON at position 1"
}

When I run these queries directly on the server everything works fine. When I copy the request from the debugger and manually fetch it, and then manually translate it using response.text(), I get:

[object Blob]

As the query itself works fine, shouldn’t the response be JSON?

Edit: I just realized I forgot to add my packages and whatnot, my bad:

    "apollo-client": "^2.6.3",
    "apollo-link": "^1.2.12",
    "apollo-link-error": "^1.1.11",
    "apollo-link-http": "^1.5.15",
    "react-apollo": "^2.5.8",
    "react-native": "^0.60.0",

Edit 2: Turns out this is related to whatwg-fetch being removed from React-Native 0.60 (see facebook/react-native#25701)

[pleportz]

In my case the error happens when the 'Network Inspect' of react native debugger is activated, as stated here: facebook/react-native#25701 (comment)