wip: refactor(client): migrate components to composition api

packages/client/src/scripts/use-leave-guard.ts

@@ -0,0 +1,34 @@
+import { inject, onUnmounted, Ref } from 'vue';
+import { i18n } from '@/i18n';
+import * as os from '@/os';
+
+export function useLeaveGuard(enabled: Ref<boolean>) {
+	const setLeaveGuard = inject('setLeaveGuard');
+
+	if (setLeaveGuard) {
+		setLeaveGuard(async () => {
+			if (!enabled.value) return false;
+
+			const { canceled } = await os.confirm({
+				type: 'warning',
+				text: i18n.locale.leaveConfirm,
+			});
+
+			return canceled;
+		});
+	}
+
+	/*
+	function onBeforeLeave(ev: BeforeUnloadEvent) {
+		if (enabled.value) {
+			ev.preventDefault();
+			ev.returnValue = '';
+		}
+	}
+
+	window.addEventListener('beforeunload', onBeforeLeave);
+	onUnmounted(() => {
+		window.removeEventListener('beforeunload', onBeforeLeave);
+	});
+	*/
+}