Merge branch 'develop' into mkusername-empty

1 files changed, 19 insertions, 0 deletions

diff --git a/packages/frontend/src/scripts/use-document-visibility.ts b/packages/frontend/src/scripts/use-document-visibility.ts
new file mode 100644
index 0000000000..47e91dd937
--- /dev/null
+++ b/packages/frontend/src/scripts/use-document-visibility.ts
@@ -0,0 +1,19 @@
+import { onMounted, onUnmounted, ref, Ref } from 'vue';
+
+export function useDocumentVisibility(): Ref<DocumentVisibilityState> {
+	const visibility = ref(document.visibilityState);
+
+	const onChange = (): void => {
+		visibility.value = document.visibilityState;
+	};
+
+	onMounted(() => {
+		document.addEventListener('visibilitychange', onChange);
+	});
+
+	onUnmounted(() => {
+		document.removeEventListener('visibilitychange', onChange);
+	});
+
+	return visibility;
+}