Enable R8 without code obfuscation

app/build.gradle

@@ -21,8 +21,14 @@ android {
     }
 
     buildTypes {
+        debug {
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
         release {
-            minifyEnabled false
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }

app/proguard-rules.pro

@@ -19,3 +19,25 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+-dontobfuscate
+
+### kotlinx.serialization https://github.com/Kotlin/kotlinx.serialization#android ###
+-if @kotlinx.serialization.Serializable class **
+-keepclassmembers class <1> {
+    static <1>$Companion Companion;
+}
+-if @kotlinx.serialization.Serializable class ** {
+    static **$* *;
+}
+-keepclassmembers class <1>$<3> {
+    kotlinx.serialization.KSerializer serializer(...);
+}
+-if @kotlinx.serialization.Serializable class ** {
+    public static ** INSTANCE;
+}
+-keepclassmembers class <1> {
+    public static <1> INSTANCE;
+    kotlinx.serialization.KSerializer serializer(...);
+}
+-keepattributes RuntimeVisibleAnnotations,AnnotationDefault
+### kotlinx.serialization https://github.com/Kotlin/kotlinx.serialization#android ###