Question Re: React Native app deployment to SAP BTP in Technology Q&A

React Native app deployment to SAP BTP

Saumya3 — Thu, 10 Oct 2024 05:37:36 GMT

We are trying to deploy a React Native application on SAP BTP. We are unable to deploy it due to the following error:

The error is due to the `punycode` module which is deprecated. This module is a dependency of `whatwg-url-without-unicode` module and `whatwg-url-without-unicode` is a dependency of `expo`. We are using `expo` to build and run our app.

How can we remove this dependency? Or is there an alternative to this method of deployment to BTP?

Re: React Native app deployment to SAP BTP

KJara — Thu, 10 Oct 2024 09:36:08 GMT

Hello,
I'm also developing a React Native app. I don't have an answer for your question, I just wanted to ask how did you build up the project in order to perform a deployment, it would be great if you could tell me.

Thanks in advance,
Karel

Re: React Native app deployment to SAP BTP

Saumya3 — Thu, 10 Oct 2024 09:53:11 GMT

We are using the CAP Java framework for the deployment.

Re: React Native app deployment to SAP BTP

catano — Mon, 14 Oct 2024 09:51:17 GMT

Hi,

Do you encounter the same DeprecationWarning errors when building (or running) the expo application?

Could you perhaps share the command you use to deploy the application?
I'm looking for the exact expo or other command that is used to bild the application.

Re: React Native app deployment to SAP BTP

Saumya3 — Mon, 14 Oct 2024 10:35:11 GMT

Hi,

Re: React Native app deployment to SAP BTP

Saumya3 — Mon, 14 Oct 2024 10:40:23 GMT

Hi,

1. The command we are using to build the app is `npx expo export --platform web`.

2. After this the command `mbt build` is run to generate the makefile.

3. Then to deploy, the command `cf deploy mta_archives/<your-app-mtar-archive-name>.mtar` is run.

Also, we are not getting the same Deprecation Warning when running or building the app

Re: React Native app deployment to SAP BTP

KJara — Thu, 20 Feb 2025 13:40:57 GMT

Hi,
Aren't there any more errors or its just that error that pops out?

On my testing, I've checked that, though this warning pops out, it could still continue with the deployment, but the real error was that the manifest.json generated didn't contain any sap.app field.

I've done a workaround copying the content of the manifest.json with that sap.app field and its data into the generated one during the deployment, so it could have that field on it. Doing that solved my deployment issue.

Kind regards,
Karel