Expo Router performance auto instrumentation

[krystofwoldrich]

Description

There is a new router for RN apps Expo Router, currently in RC.

• https://expo.github.io/router/docs/

It's built on top of react-navigation so maybe auto instrumentation will work out of the box, but we need to check that.

[marandaneto]

Maybe it works OOTB because its based on one of our integrations that we already support, likely has to be tested but in the case, offering 1st class support.

[marandaneto]

Let's start by testing if it works OOTB and later prioritize again in case it does not work.

[k1n8t1c]

Hi @krystofwoldrich do you have any update on this item?
Dealing with this right now. Expo-router does not have a standard App.js entry point, so I'm trying to figure out if there is a workaround. Looks like I'm not alone: expo/sentry-expo#370
Thanks

[kahest]

Hey @k1n8t1c thanks for flagging this - we're already in the holiday slowdown, but expect updates after the holidays!

[prathmeshgodse]

Hey @krystofwoldrich please do update us on this issue. I'm working on an Expo project and would definitely appreciate an update on this.

[lavaxun]

My team is also implementing sentry for Expo and we hit the same roadblock.
Greatly appreciate for any help on this.

[k1n8t1c]

Hey everyone, not sure if this is the preferred route, but in case it helps someone.

Working with expo router, I tried a couple of "hacks",

• first, I wrapped the RootLayout element in our _layout.js before export- that did not enable instrumentation
• then I followed this guide for enabling screen tracking in the expo router: https://docs.expo.dev/router/reference/screen-tracking/
  combined with this guide https://docs.expo.dev/router/reference/screen-tracking/
  This did the trick, at least for navigation events.
  Later, I might consider implementing custom instrumentation for the expo router if this issue is not resolved with expo router 3 and Expo 50.

[krystofwoldrich]

Thank you, everyone, for the messages and for letting us know about your interest, we are currently finalizing the deprecation of the sentry-expo library (#3262).

And following that, we will work on new features like Expo Router Automatic Instrumentation.

[krystofwoldrich]

Todos:

• Add Guide to Sentry Docs (from https://docs.expo.dev/guides/using-sentry/#usage-with-expo-router)
• Enable the auto instrumentation in the Sentry Expo Sample application

[krystofwoldrich]

Docs are at https://docs.sentry.io/platforms/react-native/performance/instrumentation/expo-router/
Sample code here

sentry-react-native/samples/expo/app/_layout.tsx

Lines 21 to 23 in df6100a

	const routingInstrumentation = new Sentry.ReactNavigationInstrumentation({
	enableTimeToInitialDisplay: !isExpoGo(), // This is not supported in Expo Go.
	});