Allow to undo Create activity

src/remote/activitypub/act/delete.ts

@@ -0,0 +1,21 @@
+import create from '../create';
+import deleteObject from '../delete';
+
+export default async (resolver, actor, activity) => {
+	if ('actor' in activity && actor.account.uri !== activity.actor) {
+		throw new Error();
+	}
+
+	const results = await create(resolver, actor, activity.object);
+
+	await Promise.all(results.map(async promisedResult => {
+		const result = await promisedResult;
+		if (result === null) {
+			return;
+		}
+
+		await deleteObject(result);
+	}));
+
+	return null;
+};