diff --git a/engine/lib/cache.test.ts b/engine/lib/cache.test.ts
index a6868e5..5e6d4c5 100644
--- a/engine/lib/cache.test.ts
+++ b/engine/lib/cache.test.ts
@@ -1,10 +1,5 @@
 import { expect, test, vi } from "vitest";
-import {
-	type Cache,
-	memoize,
-	withCache,
-	withCacheAsync,
-} from "#/engine/lib/cache.ts";
+import { type Cache, memoize, withCache } from "#/engine/lib/cache.ts";
 
 test("withCache", () => {
 	const cache: Cache<number> = new Map();
@@ -28,18 +23,18 @@ test("withCache", () => {
 	expect(fn).toHaveBeenCalledTimes(3);
 });
 
-test("withCacheAsync", async () => {
+test("async withCache", async () => {
 	const cache: Cache<Promise<number>> = new Map();
 	const fn = vi.fn(async (value: string): Promise<number> => {
 		return parseFloat(value);
 	});
-	const callback = withCacheAsync(fn, cache);
+	const callback = withCache(fn, cache);
 
 	const one = "1";
-	const res = callback("one", one);
-	const _ = callback("one", one);
+	const res = await callback("one", one);
+	const _ = await callback("one", one);
 
-	expect(await res).toBe(1);
+	expect(res).toBe(1);
 	expect(fn).toHaveBeenCalledTimes(1);
 
 	expect(await callback("two", "2")).toBe(2);
@@ -78,10 +73,10 @@ test("async memoize", async () => {
 	const [callback, cache] = memoize(fn);
 
 	const one = "1";
-	const res = callback(one);
-	const _ = callback(one);
+	const res = await callback(one);
+	const _ = await callback(one);
 
-	expect(await res).toBe(1);
+	expect(res).toBe(1);
 	expect(fn).toHaveBeenCalledTimes(1);
 
 	expect(await callback("2.0")).toBe(2);
diff --git a/engine/lib/cache.ts b/engine/lib/cache.ts
index af9e6f5..bff12ee 100644
--- a/engine/lib/cache.ts
+++ b/engine/lib/cache.ts
@@ -22,25 +22,6 @@ export function withCache<T, U extends (...args: Parameters<U>) => T>(
 	};
 }
 
-export function withCacheAsync<
-	T,
-	U extends (...args: Parameters<U>) => Promise<T>,
->(
-	fn: U,
-	cache: Cache<Promise<T>>,
-): (key: unknown, ...args: Parameters<U>) => Promise<T> {
-	return async (key, ...args) => {
-		if (cache.has(key)) {
-			return (await cache.get(key)) as T;
-		}
-
-		const value = fn(...args);
-		cache.set(key, value);
-
-		return await value;
-	};
-}
-
 export function memoize<T, U>(fn: (arg: U) => T): [(arg: U) => T, Cache<T>] {
 	const cache = new Map<unknown, T>();
 	const callback = withCache(fn, cache);