topic Re: Dynatrace Race Native Plugin with Expo dynamic config in Open Q&A

Dynatrace Race Native Plugin with Expo dynamic config

KevinGruber — Mon, 22 Dec 2025 10:30:56 GMT

Hi,

We are currently implementing the official Dynatrace react-native plugin into an EXPO for monitoring RN apps.

We ran into an issue during setup, the step where we need to call `npx instrumentDynatrace` expects a static app.json file and takes the name property verbatim from there to find the project folder in the iOS and android folder.

This has multiple problems:

We don't have a static app.json -> we use app.config.ts as we use dynamic bundleIds etc based on build params
The name is not 1:1 so expo does some transformations to create the folder name
we use CNG -> which has the above mentioned problems

To work around that, we currently generate a app.json, transform the name in a similar way, call instrumentDynatrace and then delete the app.json again. While this works okish, I am of the opinion that the plugin should support static and dynamic configurations.

All the Best,
Kevin Gruber

Dynamic config Refercence: https://docs.expo.dev/workflow/configuration/

Re: Dynatrace Race Native Plugin with Expo dynamic config

matthias_hochri — Mon, 22 Dec 2025 13:35:52 GMT

Hi Kevin,

Thanks for your request. I noted that down and we will take a look upon this feature request.

In general the app.json is used for us to get an indication for plist naming. If you are using npx instrumentDynatrace and append plist= with a customized path you can essentially skip the app.json reading as well.

https://www.npmjs.com/package/@dynatrace/react-native-plugin#npx-instrumentdynatrace

Re: Dynatrace Race Native Plugin with Expo dynamic config

KevinGruber — Tue, 23 Dec 2025 06:27:02 GMT

Hi Matthias,

Awesome thanks for taking it into consideration as a feature request / would be nice to not need the manual sync step at all for expo projects.

I wasn't aware (missed the doc entry) of the manual plist config will try this to not create almost empty files to just delete it afterwards 😄

Thanks for the help!

BR,

Kev