fetch SyntaxError: Unexpected token  in JSON at position 0

[arasrezaei]

Description

fetch response can not be parsed as json as it has a space character at first position. this character: (  );
also if return response as Text and try to JSON.parse, get same error!
using fetch on browser on same url doesn't have that issue so it means a bug in fetch library!
also tried XMLhttpRequest and same error!

How i solved problem:
JSON.parse(response.substring(1)) //---> works! 😐 (response is string of object)

snack demo:

https://snack.expo.io/05cxVMQnX

React Native info:

System:
OS: Windows 10 10.0.17134
CPU: (8) x64 Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
Memory: 7.46 GB / 15.89 GB
Binaries:
Node: 13.12.0 - C:\Program Files\nodejs\node.EXE
Yarn: 1.22.0 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
npm: 6.14.4 - C:\Program Files\nodejs\npm.CMD
Watchman: Not Found
SDKs:
Android SDK:
API Levels: 28, 29
Build Tools: 28.0.0, 28.0.3
System Images: android-28 | Intel x86 Atom_64, android-28 | Google Play Intel x86 Atom, android-29 | Google APIs Intel x86 Atom_64, android-29 | Google Play Intel x86 Atom_64
Android NDK: Not Found
IDEs:
Android Studio: Version 3.6.0.0 AI-192.7142.36.36.6308749
Languages:
Java: 1.8.0_221 - C:\Program Files\Java\jdk1.8.0_221\bin\javac.EXE
Python: Not Found
npmPackages:
@react-native-community/cli: Not Found
react: 16.13.1 => 16.13.1
react-native: ^0.63.0 => 0.63.0

[github-actions]

⚠️	Missing Required Fields
ℹ️	It looks like your issue may be missing some necessary information. GitHub provides an example template whenever a new issue is created. Could you go back and make sure to fill out the template? You may edit this issue, or close it and open a new one.

[github-actions]

⚠️	Missing Reproducible Example
ℹ️	It looks like your issue is missing a reproducible example. Please provide a Snack or a repository that demonstrates the issue you are reporting in a minimal, complete, and reproducible manner.

[github-actions]

⚠️	Missing Environment Information
ℹ️	Your issue may be missing information about your development environment. You can obtain the missing information by running react-native info in a console.

[arasrezaei]

from snack, i found out that the issue is in android...
ios and web working well

[arasrezaei]

Does anyone even watched this issue?
🤔🤔

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as a "Discussion" or add it to the "Backlog" and I will leave it open. Thank you for your contributions.

[github-actions]

This issue was closed because it has been stalled for 7 days with no activity.