Gson R8 proguard rules (java.lang.runtimeexception: missing type parameter.)

[stevdza-san]

Checklist

• [X] I have looked into the Readme and Examples, and have not found a suitable solution or answer.
• [X] I have looked into the API documentation and have not found a suitable solution or answer.
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Description

I was using val jwt = JWT(tokenId) to retrieve claims from the tokenId, in the release build of my android studio project, along with R8 enabled. However I've received the following error: java.lang.runtimeexception: missing type parameter.

After adding those three lines of code in the proguard-rules.pro, the error disappeared:

-keep class com.google.gson.reflect.TypeToken
-keep class * extends com.google.gson.reflect.TypeToken
-keep public class * implements java.lang.reflect.Type

I also had to manually add Gson library to my project just to add those rules, since I'm using KotlinX Serialization library. Is there a way for you to add those rules for Gson, when using R8, so that we don't have to?

Reproduction

1. Enable R8
2. Retrieve claims from a tokenId with val jwt = JWT(tokenId)

Additional context

No response

JWTDecode.Android version

2.0.2

Android version(s)

33