After update sdk 39, app crashed

🐛 Bug Report

Summary of Issue

I update Expo SDK to 39, but the app crashed.

TypeError: undefined is not an object (evaluating ‘self.fetch.bind’)

<unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:333588:29 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 <unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:331662:13 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 <unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:331427:31 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 <unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:331343:51 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 <unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:286044:29 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 <unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271138:47 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 <unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:128282:54 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 <unknown> AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:1335:47 loadModuleImplementation AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:271:13 guardedLoadModule AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:163:46 global code AppEntry.bundle?platform=ios&dev=true&minify=false&hot=false:408363:3

Environment - output of expo diagnostics & the platform(s) you’re targeting

expo: 39.0.0 react-native: https://github.com/expo/react-native/archive/sdk-39.0.0.tar.gz

if I just use sdk 39 and react-native sdk use 38.0.2 , app is ok. I guess it’s the compatibility issues React Native has

[sjchmiela]

Hey!

When it comes to TypeError: undefined is not an object (evaluating 'self.fetch.bind') — do you have such code in your application? It doesn’t look like one that comes from us. 🤔

When it comes to 39.0.0 is not a valid SDK version — please ensure your Expo client is updated (latest version is 2.17.x). If you open Expo client and look at the <kbd>Projects</kbd> tab in Expo client, at the bottom there is: <kbd>Client version</kbd> and <kbd>Supported SDKs</kbd>. Latest Expo client on my device shows:

[byCedric]

Hi guys! Without a repro, we can’t really investigate this issue. It’s most likely that some of your dependencies are referring to a React Native internal that was changed in between 0.62.2 and 0.63.3. If someone can provide a repro, that would be helpful!

For now I can only suggest taking a look at either one of these two issues, they seem to be similar

• https://github.com/facebook/react-native/issues/22956
• https://github.com/facebook/react-native/issues/9599

Hope this helps!