Update main.kt

Author: krossovochkin

composeApp/src/wasmJsMain/kotlin/com/krossovochkin/chesskt/main.kt

@@ -9,7 +9,6 @@ import kotlinx.browser.window
 import kotlin.math.min
 import org.jetbrains.compose.resources.ExperimentalResourceApi
 import org.w3c.dom.HTMLElement
-import org.w3c.dom.Element
 
 @OptIn(ExperimentalComposeUiApi::class, ExperimentalResourceApi::class)
 fun main() {
@@ -25,15 +24,13 @@ fun main() {
 }
 
 private fun getContainerSize(): Int? {
-    val windowWithFrame = js("window") as WindowWithFrameElement
-    val iframe = windowWithFrame.frameElement as? HTMLElement
+    val iframe = rawWindow.frameElement as? HTMLElement
     return if (iframe != null) {
         min(iframe.offsetWidth, iframe.offsetHeight)
     } else {
         min(window.innerWidth, window.innerHeight)
     }.takeIf { it > 0 }
 }
 
-external interface WindowWithFrameElement {
-    val frameElement: Element?
-}
+@JsName("window")
+external val rawWindow: dynamic