How to generate an iOS IPA file with Ionic Framework?

I've successfully built the iOS app with the ionic build ios command. But now I want to use TestFlight and it asks me for an IPA file. It seems that file is not generated with that build command. So, how can I generate it?

Thanks

this article is kind of old but should help you.

In Command line change into the folder that contains your *.xcodeproj, and run the following:

xcodebuild -target "My Target" -scheme "My Scheme"
-configuration Release clean archive

Now you’ve got your xcarchive , Following line will generate ipa which you can upload to TestFlight.

cd platforms/ios/build/device/usr/bin/xcrun -sdk iphoneos PackageApplication "$(pwd)/$PROJECT_NAME.app" -o "$(pwd)/$PROJECT_NAME.ipa"

Hope this helps