Expo notifications can't call `getExpoPushTokenAsync()`

Am currently trying to setup notifications on my managed expo project

• Expo version 47.0.0
• Expo notifications version 0.17.0
• Device: Samsung Galaxy s10
• Android version 12

I am currently just trying to get the basic setup itself working and retrieve my devices push token. This should be done using Notifications.getExpoPushTokenAsync() as described here.

The Problem

My error is strange, when I call getExpoPushTokenAsync it does indeed get me the expo push token, however shortly after my app crashes with the following messages

ERROR  TypeError: undefined is not an object (evaluating '_$$_REQUIRE(_dependencyMap[1], "../../../src/util").types.isPromise')
 WARN  [expo-notifications] Error encountered while updating server registration with latest device push token. [TypeError: undefined is not an object (evaluating '_$$_REQUIRE(_dependencyMap[5], "@ide/backoff").computeNextBackoffInterval')]

I have tried

• re-installing node_modules and expo-notifications but still get the same.
• I can definitely see the @ide/backoff package is installed in my node_modules.
• I also followed these instructions to setup firebase in app, even though my understanding is that it should work out of the box in expo go app while devving.

One other interesting thing is that I can call Notifications.getDevicePushTokenAsync() fine with no error. But still get the same error if i pass that in to getExpoPushTokenAsync method after. At a surface level it seems like somehow the request out to expo services to get the expo push token is both passing and failing 🤷‍♂️

const devicePushTokenResponse = await Notifications.getDevicePushTokenAsync();
const expoPushTokenResponse = await Notifications.getExpoPushTokenAsync({
  devicePushToken: devicePushTokenResponse,
}); // <--- Returns token & errors a few seconds later

Couldn't see any other posts with this error and expo-notifications, so would be keen to see if anyone else has ran into / fixed a similar issue recently

Cheers

Alright I figured it out, it was somewhat hinted at by this line ERROR TypeError: undefined is not an object (evaluating '_$$_REQUIRE(_dependencyMap[1], "../../../src/util").types.isPromise') And more specifically the fact that a node_modules dependency is referencing 3 levels up in the file system.

The solution

Turns out that for some reason my module resolver (defined in babel.config.js) was resolving my project's util folder instead of the packages util folder. I think this was compounded by my metro config making use of the inlineRequires functionality to improve performance (see more)

I am sure there is some actual config that could be updated to exclude node_modules from using inline requires (i did try use a blocklist to no avail), but as an interim, i was able to get it working fine by changing the path of my util folder to be @my-project/util so that it avoids future collisions.

Hope this helps anyone who runs into the same issue in the future :)