1 files changed, 57 insertions, 0 deletions
diff --git a/apps/web/src/animation/channel-data.ts b/apps/web/src/animation/channel-data.ts
new file mode 100644
index 00000000..2fc08b5c
--- /dev/null
+++ b/apps/web/src/animation/channel-data.ts
@@ -0,0 +1,57 @@
+import type {
+	AnimationChannel,
+	ChannelData,
+	CompositeChannelData,
+} from "@/animation/types";
+
+const LEGACY_ANIMATION_STORAGE_KEYS = new Set(["bindings", "channels"]);
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+	return typeof value === "object" && value !== null;
+}
+
+export function isLeafChannelData(
+	data: ChannelData | undefined,
+): data is AnimationChannel {
+	return isRecord(data) && Array.isArray(data.keys);
+}
+
+export function isCompositeChannelData(
+	data: ChannelData | undefined,
+): data is CompositeChannelData {
+	return isRecord(data) && !Array.isArray(data.keys);
+}
+
+export function getChannelsFromData({
+	data,
+}: {
+	data: ChannelData | undefined;
+}): AnimationChannel[] {
+	if (isLeafChannelData(data)) {
+		return [data];
+	}
+	if (!isCompositeChannelData(data)) {
+		return [];
+	}
+	return Object.values(data).filter(isLeafChannelData);
+}
+
+export function getChannelEntriesFromData({
+	data,
+}: {
+	data: ChannelData | undefined;
+}): Array<[string, AnimationChannel]> {
+	if (isLeafChannelData(data)) {
+		return [["value", data]];
+	}
+	if (!isCompositeChannelData(data)) {
+		return [];
+	}
+	return Object.entries(data).flatMap(([componentKey, channel]) =>
+		isLeafChannelData(channel) ? [[componentKey, channel]] : [],
+	);
+}
+
+export function isAnimationStorageKey({ key }: { key: string }): boolean {
+	return !LEGACY_ANIMATION_STORAGE_KEYS.has(key);
+}