Add discord-rpc 3.0 typings (#30578)

* Add discord-rpc 3.0 typings

* Lint

types/discord-rpc/discord-rpc-tests.ts

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+import * as discordrpc from "discord-rpc";
+
+discordrpc.register('0'); // $ExpectType boolean
+discordrpc.register(0); // $ExpectError
+
+const client = new discordrpc.Client({ transport: 'ipc' });

types/discord-rpc/index.d.ts

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+// Type definitions for discord-rpc 3.0
+// Project: https://github.com/discordjs/RPC#readme
+// Definitions by: Jason Bothell <https://github.com/jasonhaxstuff>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import { EventEmitter } from 'events';
+
+export function register(id: string): boolean;
+
+export class Client extends EventEmitter {
+	constructor(options: RPCClientOptions)
+
+	application: {
+		description: string
+		icon: string
+		id: string
+		rpc_origins: string[]
+		name: string
+	};
+
+	user: {
+		username: string
+		discriminator: string
+		id: string
+		avatar: string
+	};
+
+	connect(clientId: string): Promise<Client>;
+	login(options?: RPCLoginOptions): Promise<this>;
+
+	getGuild(id: string, timeout?: number): Promise<Guild>;
+	getGuilds(timeout?: number): Promise<Guild[]>;
+
+	getChannel(id: string, timeout?: number): Promise<Channel>;
+	getChannels(id?: string, timeout?: number): Promise<Channel[]>;
+
+	setCertifiedDevices(devices: CertifiedDevice[]): Promise<null>;
+
+	setUserVoiceSettings(id: string, settings: UserVoiceSettings): Promise<any>;
+
+	selectVoiceChannel(id: string, options?: { timeout?: number, force?: boolean }): Promise<Channel>;
+	selectTextChannel(id: string, options?: { timeout: number, force: boolean }): Promise<Channel>;
+
+	getVoiceSettings(): Promise<VoiceSettings>;
+	setVoiceSettings(args: VoiceSettings): Promise<any>;
+
+	captureShortcut(callback: (shortcut: Array<{ type: number, code: number, name: string }>, stop: () => void) => void): Promise<() => void>;
+
+	setActivity(args?: Presence, pid?: number): Promise<any>;
+	clearActivity(pid?: number): Promise<any>;
+
+	sendJoinInvite(user: { id: string } | string): Promise<any>;
+
+	sendJoinRequest(user: { id: string } | string): Promise<any>;
+	closeJoinRequest(user: { id: string } | string): Promise<any>;
+
+	createLobby(type: string, capacity: number, metadata: any): Promise<any>;
+	updateLobby(lobby: { id: string } | string, options?: { type: string, owner: { id: string } | string, capacity: number, metadata: any }): Promise<any>;
+	deleteLobby(lobby: { id: string } | string): Promise<any>;
+	connectToLobby(id: string, secret: string): Promise<any>;
+	sendToLobby(lobby: { id: string } | string, data: any): Promise<any>;
+	disconnectFromLobby(lobby: { id: string } | string): Promise<any>;
+	updateLobbyMember(lobby: { id: string } | string, user: { id: string } | string, metadata: any): Promise<any>;
+
+	subscribe(event: string, callback: (data: any) => void): Promise<Subscription>;
+	subscribe(event: string, args: any, callback: (data: any) => void): Promise<Subscription>;
+
+	destroy(): Promise<void>;
+}
+
+export interface RPCClientOptions {
+	transport: 'ipc' | 'websocket';
+}
+
+export interface RPCLoginOptions {
+	clientId: string;
+	clientSecret?: string;
+	accessToken?: string;
+	rpcToken?: string;
+	tokenEndpoint?: string;
+	scopes?: string[];
+}
+
+export interface Guild {
+	id: string;
+	name: string;
+	icon_url?: string;
+	members?: any[];
+}
+
+export interface Subscription {
+	unsubscribe(): Promise<boolean>;
+}
+
+export interface Channel {
+	id: string;
+	name: string;
+
+  /**
+   * Guild text: 0, Guild voice: 2, DM: 1, Group DM: 3
+   */
+	type: number;
+
+	guild_id?: string;
+
+  /**
+   * (text)
+   */
+	topic?: string;
+
+  /**
+   * (voice)
+   */
+	bitrate?: number;
+
+  /**
+   * (voice) 0 if none
+   */
+	user_limit?: number;
+
+  /**
+   * (text)
+   */
+	position?: number;
+
+  /**
+   * (voice) https://discordapp.com/developers/docs/resources/voice#voice-state-object
+   */
+	voice_states?: any[];
+
+  /**
+   * (text) https://discordapp.com/developers/docs/resources/channel#message-object
+   */
+	messages?: any[];
+}
+
+export interface CertifiedDevice {
+	type: 'audioinput' | 'audiooutput' | 'videoinput';
+	uuid: string;
+	vendor: { name: string, url: string };
+	model: { name: string, url: string };
+	related: string[];
+	echoCancellation?: boolean;
+	noiseSuppression?: boolean;
+	automaticGainControl?: boolean;
+	hardwareMute?: boolean;
+}
+
+export interface UserVoiceSettings {
+	id: string;
+	pan?: { left: number, right: number };
+	volume?: number;
+	mute?: boolean;
+}
+
+export interface VoiceSettings {
+	automaticGainControl: boolean;
+	echoCancellation: boolean;
+	noiseSuppression: boolean;
+	qos: boolean;
+	silenceWarning: boolean;
+	deaf: boolean;
+	mute: boolean;
+	input?: {
+		device: string,
+		volume: number
+	};
+	output?: {
+		device: string,
+		volume: number
+	};
+	mode?: {
+		autoThreshold: boolean,
+		threshold: number,
+		shortcut: Array<{ type: number, code: number, name: string }>,
+		delay: number
+	};
+}
+
+export interface Presence {
+	state?: string;
+	details?: string;
+	startTimestamp?: number;
+	endTimestamp?: number;
+	largeImageKey?: string;
+	largeImageText?: string;
+	smallImageKey?: string;
+	smallImageText?: string;
+	instance?: boolean;
+}

types/discord-rpc/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "discord-rpc-tests.ts"
+    ]
+}

types/discord-rpc/tslint.json

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+{ "extends": "dtslint/dt.json" }