....

app/src/main/java/com/base/filerecoveryrecyclebin/billing/BillingClientLifecycle.kt

+package com.base.filerecoveryrecyclebin.billing
+
+import androidx.lifecycle.DefaultLifecycleObserver
+import com.android.billingclient.api.Purchase
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+
+class BillingClientLifecycle : DefaultLifecycleObserver {
+
+    private val _subscriptionPurchases = MutableStateFlow<List<Purchase>>(emptyList())
+    val subscriptionPurchases = _subscriptionPurchases.asStateFlow()
+}
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app/src/main/java/com/base/filerecoveryrecyclebin/billing/BillingViewModel.kt

 package com.base.filerecoveryrecyclebin.billing
 
 import android.app.Application
+import android.content.Context
 import androidx.lifecycle.AndroidViewModel
 
-class BillingViewModel(application: Application):AndroidViewModel(application) {
-
+class BillingViewModel(application: Application) : AndroidViewModel(application) {
 
+//    val billingClientLifecycle: BillingClientLifecycle
+//        get() = BillingClientLifecycle.getInstance(this)
+//
+//    @Volatile
+//    private var INSTANCE: BillingClientLifecycle? = null
+//    fun getInstance(applicationContext: Context): BillingClientLifecycle =
+//        INSTANCE ?: synchronized(this) {
+//            INSTANCE ?: BillingClientLifecycle(applicationContext).also { INSTANCE = it }
+//        }
 }
\ No newline at end of file