Created Saver and autoSaver

navigation-compose/src/androidMain/kotlin/com.chrynan.navigation.compose/AndroidNavContainer.kt

@@ -5,6 +5,7 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.saveable.autoSaver
 
 @Composable
 @ExperimentalNavigationApi

navigation-compose/src/androidMain/kotlin/com.chrynan.navigation.compose/AndroidSaver.kt

@@ -0,0 +1,7 @@
+@file:Suppress("unused")
+
+package com.chrynan.navigation.compose
+
+actual typealias Saver<Original, Saveable> = androidx.compose.runtime.saveable.Saver<Original, Saveable>
+
+actual fun <T> autoSaver(): Saver<T, Any> = androidx.compose.runtime.saveable.autoSaver()

navigation-compose/src/commonMain/kotlin/com.chrynan.navigation.compose/Saver.kt

@@ -0,0 +1,19 @@
+package com.chrynan.navigation.compose
+
+/**
+ * A component that can convert the type of the [Original] into the type of [Saveable] so that it can be serialized,
+ * saved, restored. This component is meant to represent the androidx.compose.runtime.saveable.Saver interface, but
+ * that component is not available for Jetpack Compose Web, so this expected interface is defined in the common source
+ * set. The Android and JVM targets should simply use a typealias to delegate to the
+ * androidx.compose.runtime.saveable.Saver interface. The JavaScript target should provide a default implementation.
+ */
+expect interface Saver<Original, Saveable : Any>
+
+/**
+ * Retrieves a default implementation of a [Saver] interface which does not perform any conversion. Similar to the
+ * [Saver] interface, this function is meant to represent the androidx.compose.runtime.saveable.autoSaver function, but
+ * that function is not available for Jetpack Compose Web, so this expected function is defined in the common source
+ * set. The Android and JVM targets should simply delegate to the androidx.compose.runtime.saveable.autoSaver function.
+ * The JavaScript target should provide a default implementation.
+ */
+expect fun <T> autoSaver(): Saver<T, Any>

navigation-compose/src/jsMain/kotlin/com.chrynan.navigation.compose/JsSaver.kt

@@ -0,0 +1,7 @@
+@file:Suppress("unused")
+
+package com.chrynan.navigation.compose
+
+actual interface Saver<Original, Saveable : Any>
+
+actual fun <T> autoSaver(): Saver<T, Any> = object : Saver<T, Any> {}

navigation-compose/src/jvmMain/kotlin/com/chrynan/navigation/compose/JvmSaver.kt

@@ -0,0 +1,7 @@
+@file:Suppress("unused")
+
+package com.chrynan.navigation.compose
+
+actual typealias Saver<Original, Saveable> = androidx.compose.runtime.saveable.Saver<Original, Saveable>
+
+actual fun <T> autoSaver(): Saver<T, Any> = androidx.compose.runtime.saveable.autoSaver()