Fixed linting issues

packages/stitcher/src/adapters/kv/memory.ts

@@ -2,8 +2,9 @@ const kv = new Map<string, string>();
 
 export async function set(key: string, value: string, ttl: number) {
   kv.set(key, value);
+  await Promise.resolve(ttl);
 }
 
 export async function get(key: string) {
-  return kv.get(key);
+  return Promise.resolve(kv.get(key) ?? null);
 }

packages/stitcher/src/vast.ts

@@ -78,6 +78,10 @@ async function scheduleForPackage(assetId: string, url: string) {
 }
 
 async function fetchAsset(id: string) {
+  if (!api) {
+    // If we have no api configured, we cannot use it.
+    return null;
+  }
   const { data, status } = await api.assets({ id }).get();
   if (status === 404) {
     return null;

packages/stitcher/test/mock.ts

@@ -1,7 +1,6 @@
 import { DateTime } from "luxon";
 import type { MasterPlaylist, MediaPlaylist } from "../src/parser";
 import type { Session } from "../src/session";
-import type { Interstitial } from "../src/types";
 
 export function mockMaster(): MasterPlaylist {
   return {