Ocultar botón de pantalla completa si no es posible

src/main.ts

@@ -295,12 +295,17 @@ async function initJuego() {
   window.requestAnimationFrame(loop);
 }
 
-document.getElementById("full-screen")!.addEventListener("click", async () => {
+const fullscreenEl = document.getElementById("full-screen")!;
+if ("requestFullscreen" in document.documentElement) {
+  fullscreenEl.addEventListener("click", async () => {
     document.documentElement.requestFullscreen &&
       (await document.documentElement.requestFullscreen({
         navigationUI: "hide",
       }));
     await screen.orientation.lock("landscape");
-});
+  });
+} else {
+  fullscreenEl.hidden = true;
+}
 
 initJuego();