Aggregating channels, filter inoperable.

src/query.js

@@ -0,0 +1,22 @@
+export function getActorIdentifier(actor) {
+	if (!actor) {
+		return null;
+	}
+
+	return `${actor.slug}:${actor.id}`;
+}
+
+export function parseActorIdentifier(identifier) {
+	if (!identifier) {
+		return null;
+	}
+
+	const [slug, idString] = identifier.split(':');
+	const id = Number(idString);
+
+	if (!id) {
+		return null;
+	}
+
+	return { slug, id };
+}