refactor: use interfaces for AsyncEventEmitter event maps (#10044)

* refactor: use interfaces for AsyncEventEmitter event maps

* refactor: apply suggestions from code review and add tests

* refactor: better errors on missing dispatch types

packages/rest/package.json

@@ -86,7 +86,7 @@
 		"@discordjs/util": "workspace:^",
 		"@sapphire/async-queue": "^1.5.0",
 		"@sapphire/snowflake": "^3.5.1",
-		"@vladfrangu/async_event_emitter": "^2.2.2",
+		"@vladfrangu/async_event_emitter": "^2.2.4",
 		"discord-api-types": "0.37.61",
 		"magic-bytes.js": "^1.5.0",
 		"tslib": "^2.6.2",

packages/rest/src/lib/REST.ts

@@ -18,7 +18,7 @@ import { RequestMethod } from './utils/types.js';
 import type {
 	RESTOptions,
 	ResponseLike,
-	RestEventsMap,
+	RestEvents,
 	HashData,
 	InternalRequest,
 	RouteLike,
@@ -31,7 +31,7 @@ import { isBufferLike, parseResponse } from './utils/utils.js';
 /**
  * Represents the class that manages handlers for endpoints
  */
-export class REST extends AsyncEventEmitter<RestEventsMap> {
+export class REST extends AsyncEventEmitter<RestEvents> {
 	/**
 	 * The {@link https://undici.nodejs.org/#/docs/api/Agent | Agent} for all requests
 	 * performed by this manager.

packages/rest/src/lib/utils/types.ts

@@ -14,9 +14,7 @@ export interface RestEvents {
 	restDebug: [info: string];
 }
 
-export type RestEventsMap = {
-	[K in keyof RestEvents]: RestEvents[K];
-};
+export interface RestEventsMap extends RestEvents {}
 
 /**
  * Options to be passed when creating the REST instance