Improve error handling of API (#4345)

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* Update attached_notes.ts

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* Refactor

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* Update call.ts

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* ✌️

* Fix

src/server/api/endpoints/admin/emoji/list.ts

@@ -18,16 +18,16 @@ export const meta = {
 	}
 };
 
-export default define(meta, (ps) => new Promise(async (res, rej) => {
+export default define(meta, async (ps) => {
 	const emojis = await Emoji.find({
 		host: ps.host
 	});
 
-	res(emojis.map(e => ({
+	return emojis.map(e => ({
 		id: e._id,
 		name: e.name,
 		aliases: e.aliases,
 		host: e.host,
 		url: e.url
-	})));
-}));
+	}));
+});