Kotlin Multiplatform

// commonMain — shared business logic
class ProductRepository(private val client: HttpClient) {
    suspend fun fetchProducts(): List<Product> =
        client.get("https://api.example.com/products").body()
}

// commonMain — shared models
@Serializable
data class Product(val id: String, val name: String, val price: Double)

// expect / actual — platform-specific glue
expect class Logger() {
    fun log(message: String)
}

// androidMain
actual class Logger {
    actual fun log(message: String) = Log.d("App", message)
}

// iosMain
actual class Logger {
    actual fun log(message: String) = NSLog(message)
}