feat: masks, properties refactor, shaders, storage migrations, and more

apps/web/src/lib/cancel-interaction.ts

@@ -0,0 +1,24 @@
+type CancelFn = () => void;
+
+const cancellers = new Set<CancelFn>();
+
+export function registerCanceller({ fn }: { fn: CancelFn }): () => void {
+	cancellers.add(fn);
+
+	return () => {
+		cancellers.delete(fn);
+	};
+}
+
+export function cancelInteraction(): boolean {
+	if (cancellers.size === 0) return false;
+
+	const activeCancellers = Array.from(cancellers);
+	cancellers.clear();
+
+	for (const cancel of activeCancellers) {
+		cancel();
+	}
+
+	return true;
+}