rewrite wait to specify resolve type

Author: schiltz3

index.ts

@@ -10,6 +10,7 @@ import { checkForRoles, checkIfCollectionsExist } from "./rolesOps";
 import { classModel } from "./models/classModel";
 import { staffModel } from "./models/staffModel";
 import { yearModel } from "./models/yearModel";
+import { sleep } from "./util";
 
 // import all environment variables from .env file
 dotenv.config();

util.ts

@@ -1,8 +1,6 @@
 export function sleep(ms: number) {
   // Create new promise that resolves itself after a delay of <ms>
-  return new Promise((resolve) =>
-    setTimeout(function () {
-      resolve;
-    }, ms)
+  return new Promise((resolve: (args: void) => void) =>
+    setTimeout(resolve, ms)
   );
 }