types(voice): bring back typed events (#8109)

packages/voice/__tests__/SpeakingMap.test.ts

@@ -11,8 +11,8 @@ describe('SpeakingMap', () => {
 		const starts: string[] = [];
 		const ends: string[] = [];
 
-		speaking.on('start', (userId: string) => void starts.push(userId));
-		speaking.on('end', (userId: string) => void ends.push(userId));
+		speaking.on('start', (userId) => void starts.push(userId));
+		speaking.on('end', (userId) => void ends.push(userId));
 
 		for (let i = 0; i < 10; i++) {
 			speaking.onPacket(userId);

packages/voice/src/VoiceConnection.ts

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/method-signature-style */
 import { EventEmitter } from 'node:events';
 import type { GatewayVoiceServerUpdateDispatchData, GatewayVoiceStateUpdateDispatchData } from 'discord-api-types/v10';
 import type { CreateVoiceConnectionOptions } from '.';
@@ -161,6 +162,32 @@ export type VoiceConnectionState =
 	| VoiceConnectionReadyState
 	| VoiceConnectionDestroyedState;
 
+export interface VoiceConnection extends EventEmitter {
+	/**
+	 * Emitted when there is an error emitted from the voice connection
+	 * @event
+	 */
+	on(event: 'error', listener: (error: Error) => void): this;
+	/**
+	 * Emitted debugging information about the voice connection
+	 * @event
+	 */
+	on(event: 'debug', listener: (message: string) => void): this;
+	/**
+	 * Emitted when the state of the voice connection changes
+	 * @event
+	 */
+	on(event: 'stateChange', listener: (oldState: VoiceConnectionState, newState: VoiceConnectionState) => void): this;
+	/**
+	 * Emitted when the state of the voice connection changes to a specific status
+	 * @event
+	 */
+	on<T extends VoiceConnectionStatus>(
+		event: T,
+		listener: (oldState: VoiceConnectionState, newState: VoiceConnectionState & { status: T }) => void,
+	): this;
+}
+
 /**
  * A connection to the voice server of a Guild, can be used to play audio in voice channels.
  */

packages/voice/src/audio/AudioPlayer.ts

@@ -1,4 +1,4 @@
-/* eslint-disable @typescript-eslint/prefer-ts-expect-error */
+/* eslint-disable @typescript-eslint/prefer-ts-expect-error, @typescript-eslint/method-signature-style */
 import EventEmitter from 'node:events';
 import { AudioPlayerError } from './AudioPlayerError';
 import type { AudioResource } from './AudioResource';
@@ -154,10 +154,32 @@ export type AudioPlayerState =
 export interface AudioPlayer extends EventEmitter {
 	/**
 	 * Emitted when there is an error emitted from the audio resource played by the audio player
-	 *
 	 * @event
 	 */
-	on: (event: 'error', listener: (error: AudioPlayerError) => void) => this;
+	on(event: 'error', listener: (error: AudioPlayerError) => void): this;
+	/**
+	 * Emitted debugging information about the audio player
+	 * @event
+	 */
+	on(event: 'debug', listener: (message: string) => void): this;
+	/**
+	 * Emitted when the state of the audio player changes
+	 * @event
+	 */
+	on(event: 'stateChange', listener: (oldState: AudioPlayerState, newState: AudioPlayerState) => void): this;
+	/**
+	 * Emitted when the audio player is subscribed to a voice connection
+	 * @event
+	 */
+	on(event: 'subscribe' | 'unsubscribe', listener: (subscription: PlayerSubscription) => void): this;
+	/**
+	 * Emitted when the status of state changes to a specific status
+	 * @event
+	 */
+	on<T extends AudioPlayerStatus>(
+		event: T,
+		listener: (oldState: AudioPlayerState, newState: AudioPlayerState & { status: T }) => void,
+	): this;
 }
 
 /**

packages/voice/src/networking/VoiceUDPSocket.ts

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/method-signature-style */
 import { createSocket, Socket } from 'node:dgram';
 import { EventEmitter } from 'node:events';
 import { isIPv4 } from 'node:net';
@@ -50,6 +51,13 @@ const KEEP_ALIVE_LIMIT = 12;
  */
 const MAX_COUNTER_VALUE = 2 ** 32 - 1;
 
+export interface VoiceUDPSocket extends EventEmitter {
+	on(event: 'error', listener: (error: Error) => void): this;
+	on(event: 'close', listener: () => void): this;
+	on(event: 'debug', listener: (message: string) => void): this;
+	on(event: 'message', listener: (message: Buffer) => void): this;
+}
+
 /**
  * Manages the UDP networking for a voice connection.
  */

packages/voice/src/receive/SSRCMap.ts

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/method-signature-style */
 import { EventEmitter } from 'node:events';
 
 /**
@@ -21,6 +22,12 @@ export interface VoiceUserData {
 	userId: string;
 }
 
+export interface SSRCMap extends EventEmitter {
+	on(event: 'create', listener: (newData: VoiceUserData) => void): this;
+	on(event: 'update', listener: (oldData: VoiceUserData | undefined, newData: VoiceUserData) => void): this;
+	on(event: 'delete', listener: (deletedData: VoiceUserData) => void): this;
+}
+
 /**
  * Maps audio SSRCs to data of users in voice connections.
  */

packages/voice/src/receive/SpeakingMap.ts

@@ -1,5 +1,13 @@
 import { EventEmitter } from 'node:events';
 
+export interface SpeakingMap extends EventEmitter {
+	/**
+	 * Emitted when a user starts/stops speaking.
+	 * @event
+	 */
+	on: (event: 'start' | 'end', listener: (userId: string) => void) => this;
+}
+
 /**
  * Tracks the speaking states of users in a voice channel.
  */