705 lines
22 KiB
TypeScript
705 lines
22 KiB
TypeScript
import * as _discordjs_util from '@discordjs/util';
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import { Awaitable } from '@discordjs/util';
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import { GatewayDispatchPayload, GatewayReadyDispatchData, GatewaySendPayload, GatewayOpcodes, GatewayIntentBits, GatewayIdentifyProperties, GatewayPresenceUpdateData, APIGatewayBotInfo } from 'discord-api-types/v10';
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import * as _discordjs_collection from '@discordjs/collection';
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import { Collection } from '@discordjs/collection';
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import { AsyncEventEmitter } from '@vladfrangu/async_event_emitter';
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import { REST } from '@discordjs/rest';
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import { AsyncQueue } from '@sapphire/async-queue';
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declare enum WebSocketShardEvents {
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Closed = "closed",
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Debug = "debug",
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Dispatch = "dispatch",
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Error = "error",
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HeartbeatComplete = "heartbeat",
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Hello = "hello",
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Ready = "ready",
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Resumed = "resumed"
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}
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declare enum WebSocketShardStatus {
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Idle = 0,
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Connecting = 1,
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Resuming = 2,
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Ready = 3
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}
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declare enum WebSocketShardDestroyRecovery {
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Reconnect = 0,
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Resume = 1
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}
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interface WebSocketShardEventsMap {
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[WebSocketShardEvents.Closed]: [{
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code: number;
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}];
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[WebSocketShardEvents.Debug]: [payload: {
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message: string;
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}];
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[WebSocketShardEvents.Dispatch]: [payload: {
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data: GatewayDispatchPayload;
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}];
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[WebSocketShardEvents.Error]: [payload: {
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error: Error;
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}];
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[WebSocketShardEvents.Hello]: [];
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[WebSocketShardEvents.Ready]: [payload: {
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data: GatewayReadyDispatchData;
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}];
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[WebSocketShardEvents.Resumed]: [];
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[WebSocketShardEvents.HeartbeatComplete]: [payload: {
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ackAt: number;
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heartbeatAt: number;
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latency: number;
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}];
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}
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interface WebSocketShardDestroyOptions {
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code?: number;
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reason?: string;
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recover?: WebSocketShardDestroyRecovery;
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}
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declare enum CloseCodes {
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Normal = 1000,
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Resuming = 4200
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}
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interface SendRateLimitState {
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resetAt: number;
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sent: number;
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}
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declare class WebSocketShard extends AsyncEventEmitter<WebSocketShardEventsMap> {
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#private;
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private connection;
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private useIdentifyCompress;
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private inflate;
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private readonly textDecoder;
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private replayedEvents;
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private isAck;
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private sendRateLimitState;
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private initialHeartbeatTimeoutController;
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private heartbeatInterval;
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private lastHeartbeatAt;
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private initialConnectResolved;
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private failedToConnectDueToNetworkError;
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private readonly sendQueue;
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private readonly timeoutAbortControllers;
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private readonly strategy;
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readonly id: number;
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get status(): WebSocketShardStatus;
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constructor(strategy: IContextFetchingStrategy, id: number);
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connect(): Promise<void>;
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private internalConnect;
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destroy(options?: WebSocketShardDestroyOptions): Promise<void>;
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private waitForEvent;
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send(payload: GatewaySendPayload): Promise<void>;
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private identify;
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private resume;
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private heartbeat;
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private unpackMessage;
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private onMessage;
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private onError;
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private onClose;
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private debug;
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}
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/**
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* Strategies responsible for spawning, initializing connections, destroying shards, and relaying events
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*/
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interface IShardingStrategy {
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/**
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* Initializes all the shards
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*/
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connect(): Awaitable<void>;
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/**
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* Destroys all the shards
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*/
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destroy(options?: Omit<WebSocketShardDestroyOptions, 'recover'>): Awaitable<void>;
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/**
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* Fetches the status of all the shards
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*/
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fetchStatus(): Awaitable<Collection<number, WebSocketShardStatus>>;
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/**
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* Sends a payload to a shard
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*/
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send(shardId: number, payload: GatewaySendPayload): Awaitable<void>;
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/**
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* Spawns all the shards
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*/
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spawn(shardIds: number[]): Awaitable<void>;
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}
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/**
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* IdentifyThrottlers are responsible for dictating when a shard is allowed to identify.
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*
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* @see {@link https://discord.com/developers/docs/topics/gateway#sharding-max-concurrency}
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*/
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interface IIdentifyThrottler {
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/**
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* Resolves once the given shard should be allowed to identify, or rejects if the operation was aborted.
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*/
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waitForIdentify(shardId: number, signal: AbortSignal): Promise<void>;
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}
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/**
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* Simple strategy that just spawns shards in the current process
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*/
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declare class SimpleShardingStrategy implements IShardingStrategy {
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private readonly manager;
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private readonly shards;
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constructor(manager: WebSocketManager);
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/**
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* {@inheritDoc IShardingStrategy.spawn}
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*/
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spawn(shardIds: number[]): Promise<void>;
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/**
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* {@inheritDoc IShardingStrategy.connect}
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*/
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connect(): Promise<void>;
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/**
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* {@inheritDoc IShardingStrategy.destroy}
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*/
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destroy(options?: Omit<WebSocketShardDestroyOptions, 'recover'>): Promise<void>;
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/**
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* {@inheritDoc IShardingStrategy.send}
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*/
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send(shardId: number, payload: GatewaySendPayload): Promise<void>;
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/**
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* {@inheritDoc IShardingStrategy.fetchStatus}
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*/
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fetchStatus(): Promise<Collection<number, WebSocketShardStatus>>;
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}
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/**
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* The state of a rate limit key's identify queue.
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*/
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interface IdentifyState {
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queue: AsyncQueue;
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resetsAt: number;
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}
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/**
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* Local, in-memory identify throttler.
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*/
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declare class SimpleIdentifyThrottler implements IIdentifyThrottler {
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private readonly maxConcurrency;
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private readonly states;
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constructor(maxConcurrency: number);
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/**
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* {@inheritDoc IIdentifyThrottler.waitForIdentify}
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*/
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waitForIdentify(shardId: number, signal: AbortSignal): Promise<void>;
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}
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/**
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* Valid encoding types
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*/
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declare enum Encoding {
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JSON = "json"
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}
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/**
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* Valid compression methods
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*/
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declare enum CompressionMethod {
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ZlibStream = "zlib-stream"
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}
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declare const DefaultDeviceProperty: `@discordjs/ws ${string}`;
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/**
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* Default options used by the manager
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*/
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declare const DefaultWebSocketManagerOptions: {
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readonly buildIdentifyThrottler: (manager: WebSocketManager) => Promise<SimpleIdentifyThrottler>;
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readonly buildStrategy: (manager: WebSocketManager) => SimpleShardingStrategy;
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readonly shardCount: null;
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readonly shardIds: null;
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readonly largeThreshold: null;
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readonly initialPresence: null;
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readonly identifyProperties: {
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readonly browser: `@discordjs/ws ${string}`;
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readonly device: `@discordjs/ws ${string}`;
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readonly os: NodeJS.Platform;
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};
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readonly version: "10";
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readonly encoding: Encoding;
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readonly compression: null;
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readonly retrieveSessionInfo: (shardId: number) => SessionInfo | null;
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readonly updateSessionInfo: (shardId: number, info: SessionInfo | null) => void;
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readonly handshakeTimeout: 30000;
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readonly helloTimeout: 60000;
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readonly readyTimeout: 15000;
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};
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declare const ImportantGatewayOpcodes: Set<GatewayOpcodes>;
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declare function getInitialSendRateLimitState(): SendRateLimitState;
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/**
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* Represents a range of shard ids
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*/
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interface ShardRange {
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end: number;
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start: number;
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}
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/**
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* Session information for a given shard, used to resume a session
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*/
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interface SessionInfo {
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/**
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* URL to use when resuming
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*/
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resumeURL: string;
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/**
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* The sequence number of the last message sent by the shard
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*/
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sequence: number;
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/**
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* Session id for this shard
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*/
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sessionId: string;
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/**
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* The total number of shards at the time of this shard identifying
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*/
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shardCount: number;
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/**
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* The id of the shard
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*/
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shardId: number;
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}
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/**
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* Required options for the WebSocketManager
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*/
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interface RequiredWebSocketManagerOptions {
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/**
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* The intents to request
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*/
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intents: GatewayIntentBits | 0;
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/**
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* The REST instance to use for fetching gateway information
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*/
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rest: REST;
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/**
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* The token to use for identifying with the gateway
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*/
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token: string;
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}
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/**
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* Optional additional configuration for the WebSocketManager
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*/
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interface OptionalWebSocketManagerOptions {
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/**
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* Builds an identify throttler to use for this manager's shards
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*/
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buildIdentifyThrottler(manager: WebSocketManager): Awaitable<IIdentifyThrottler>;
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/**
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* Builds the strategy to use for sharding
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*
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* @example
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* ```ts
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* const manager = new WebSocketManager({
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* token: process.env.DISCORD_TOKEN,
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* intents: 0, // for no intents
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* rest,
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* buildStrategy: (manager) => new WorkerShardingStrategy(manager, { shardsPerWorker: 2 }),
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* });
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* ```
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*/
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buildStrategy(manager: WebSocketManager): IShardingStrategy;
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/**
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* The compression method to use
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*
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* @defaultValue `null` (no compression)
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*/
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compression: CompressionMethod | null;
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/**
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* The encoding to use
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*
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* @defaultValue `'json'`
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*/
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encoding: Encoding;
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/**
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* How long to wait for a shard to connect before giving up
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*/
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handshakeTimeout: number | null;
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/**
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* How long to wait for a shard's HELLO packet before giving up
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*/
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helloTimeout: number | null;
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/**
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* Properties to send to the gateway when identifying
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*/
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identifyProperties: GatewayIdentifyProperties;
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/**
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* Initial presence data to send to the gateway when identifying
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*/
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initialPresence: GatewayPresenceUpdateData | null;
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/**
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* Value between 50 and 250, total number of members where the gateway will stop sending offline members in the guild member list
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*/
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largeThreshold: number | null;
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/**
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* How long to wait for a shard's READY packet before giving up
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*/
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readyTimeout: number | null;
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/**
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* Function used to retrieve session information (and attempt to resume) for a given shard
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*
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* @example
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* ```ts
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* const manager = new WebSocketManager({
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* async retrieveSessionInfo(shardId): Awaitable<SessionInfo | null> {
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* // Fetch this info from redis or similar
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* return { sessionId: string, sequence: number };
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* // Return null if no information is found
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* },
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* });
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* ```
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*/
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retrieveSessionInfo(shardId: number): Awaitable<SessionInfo | null>;
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/**
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* The total number of shards across all WebsocketManagers you intend to instantiate.
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* Use `null` to use Discord's recommended shard count
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*/
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shardCount: number | null;
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/**
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* The ids of the shards this WebSocketManager should manage.
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* Use `null` to simply spawn 0 through `shardCount - 1`
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*
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* @example
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* ```ts
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* const manager = new WebSocketManager({
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* shardIds: [1, 3, 7], // spawns shard 1, 3, and 7, nothing else
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* });
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* ```
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* @example
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* ```ts
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* const manager = new WebSocketManager({
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* shardIds: {
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* start: 3,
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* end: 6,
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* }, // spawns shards 3, 4, 5, and 6
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* });
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* ```
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*/
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shardIds: number[] | ShardRange | null;
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/**
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* Function used to store session information for a given shard
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*/
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updateSessionInfo(shardId: number, sessionInfo: SessionInfo | null): Awaitable<void>;
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/**
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* The gateway version to use
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*
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* @defaultValue `'10'`
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*/
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version: string;
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}
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interface WebSocketManagerOptions extends OptionalWebSocketManagerOptions, RequiredWebSocketManagerOptions {
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}
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interface CreateWebSocketManagerOptions extends Partial<OptionalWebSocketManagerOptions>, RequiredWebSocketManagerOptions {
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}
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interface ManagerShardEventsMap {
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[WebSocketShardEvents.Closed]: [{
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code: number;
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shardId: number;
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}];
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[WebSocketShardEvents.Debug]: [payload: {
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message: string;
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shardId: number;
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}];
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[WebSocketShardEvents.Dispatch]: [payload: {
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data: GatewayDispatchPayload;
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shardId: number;
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}];
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[WebSocketShardEvents.Error]: [payload: {
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error: Error;
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shardId: number;
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}];
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[WebSocketShardEvents.Hello]: [{
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shardId: number;
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}];
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[WebSocketShardEvents.Ready]: [payload: {
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data: GatewayReadyDispatchData;
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shardId: number;
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}];
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[WebSocketShardEvents.Resumed]: [{
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shardId: number;
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}];
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[WebSocketShardEvents.HeartbeatComplete]: [
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payload: {
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ackAt: number;
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heartbeatAt: number;
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latency: number;
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shardId: number;
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}
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];
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}
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declare class WebSocketManager extends AsyncEventEmitter<ManagerShardEventsMap> implements AsyncDisposable {
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/**
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* The options being used by this manager
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*/
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readonly options: WebSocketManagerOptions;
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/**
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* Internal cache for a GET /gateway/bot result
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*/
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private gatewayInformation;
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/**
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* Internal cache for the shard ids
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*/
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private shardIds;
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/**
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* Strategy used to manage shards
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*
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* @defaultValue `SimpleShardingStrategy`
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*/
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private readonly strategy;
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constructor(options: CreateWebSocketManagerOptions);
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/**
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* Fetches the gateway information from Discord - or returns it from cache if available
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*
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* @param force - Whether to ignore the cache and force a fresh fetch
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*/
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fetchGatewayInformation(force?: boolean): Promise<APIGatewayBotInfo>;
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/**
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* Updates your total shard count on-the-fly, spawning shards as needed
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*
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* @param shardCount - The new shard count to use
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*/
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updateShardCount(shardCount: number | null): Promise<this>;
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/**
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* Yields the total number of shards across for your bot, accounting for Discord recommendations
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*/
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getShardCount(): Promise<number>;
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/**
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* Yields the ids of the shards this manager should manage
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*/
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getShardIds(force?: boolean): Promise<number[]>;
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connect(): Promise<void>;
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destroy(options?: Omit<WebSocketShardDestroyOptions, 'recover'>): Awaitable<void>;
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send(shardId: number, payload: GatewaySendPayload): Awaitable<void>;
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fetchStatus(): Awaitable<_discordjs_collection.Collection<number, WebSocketShardStatus>>;
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[Symbol.asyncDispose](): Promise<void>;
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}
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interface FetchingStrategyOptions extends Omit<WebSocketManagerOptions, 'buildIdentifyThrottler' | 'buildStrategy' | 'rest' | 'retrieveSessionInfo' | 'shardCount' | 'shardIds' | 'updateSessionInfo'> {
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readonly gatewayInformation: APIGatewayBotInfo;
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readonly shardCount: number;
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}
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/**
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* Strategies responsible solely for making manager information accessible
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*/
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interface IContextFetchingStrategy {
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readonly options: FetchingStrategyOptions;
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retrieveSessionInfo(shardId: number): Awaitable<SessionInfo | null>;
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updateSessionInfo(shardId: number, sessionInfo: SessionInfo | null): Awaitable<void>;
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/**
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* Resolves once the given shard should be allowed to identify
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* This should correctly handle the signal and reject with an abort error if the operation is aborted.
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* Other errors will cause the shard to reconnect.
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*/
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waitForIdentify(shardId: number, signal: AbortSignal): Promise<void>;
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}
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declare function managerToFetchingStrategyOptions(manager: WebSocketManager): Promise<FetchingStrategyOptions>;
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declare class SimpleContextFetchingStrategy implements IContextFetchingStrategy {
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private readonly manager;
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readonly options: FetchingStrategyOptions;
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private static throttlerCache;
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private static ensureThrottler;
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constructor(manager: WebSocketManager, options: FetchingStrategyOptions);
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retrieveSessionInfo(shardId: number): Promise<SessionInfo | null>;
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updateSessionInfo(shardId: number, sessionInfo: SessionInfo | null): _discordjs_util.Awaitable<void>;
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waitForIdentify(shardId: number, signal: AbortSignal): Promise<void>;
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}
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declare class WorkerContextFetchingStrategy implements IContextFetchingStrategy {
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readonly options: FetchingStrategyOptions;
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private readonly sessionPromises;
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private readonly waitForIdentifyPromises;
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constructor(options: FetchingStrategyOptions);
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retrieveSessionInfo(shardId: number): Promise<SessionInfo | null>;
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updateSessionInfo(shardId: number, sessionInfo: SessionInfo | null): void;
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waitForIdentify(shardId: number, signal: AbortSignal): Promise<void>;
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}
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interface WorkerData extends FetchingStrategyOptions {
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shardIds: number[];
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}
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declare enum WorkerSendPayloadOp {
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Connect = 0,
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Destroy = 1,
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Send = 2,
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SessionInfoResponse = 3,
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ShardIdentifyResponse = 4,
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FetchStatus = 5
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}
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type WorkerSendPayload = {
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nonce: number;
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ok: boolean;
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op: WorkerSendPayloadOp.ShardIdentifyResponse;
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} | {
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nonce: number;
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op: WorkerSendPayloadOp.FetchStatus;
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shardId: number;
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} | {
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nonce: number;
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op: WorkerSendPayloadOp.SessionInfoResponse;
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session: SessionInfo | null;
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} | {
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op: WorkerSendPayloadOp.Connect;
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shardId: number;
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} | {
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op: WorkerSendPayloadOp.Destroy;
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options?: WebSocketShardDestroyOptions;
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shardId: number;
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} | {
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op: WorkerSendPayloadOp.Send;
|
|
payload: GatewaySendPayload;
|
|
shardId: number;
|
|
};
|
|
declare enum WorkerReceivePayloadOp {
|
|
Connected = 0,
|
|
Destroyed = 1,
|
|
Event = 2,
|
|
RetrieveSessionInfo = 3,
|
|
UpdateSessionInfo = 4,
|
|
WaitForIdentify = 5,
|
|
FetchStatusResponse = 6,
|
|
WorkerReady = 7,
|
|
CancelIdentify = 8
|
|
}
|
|
type WorkerReceivePayload = {
|
|
data: any;
|
|
event: WebSocketShardEvents;
|
|
op: WorkerReceivePayloadOp.Event;
|
|
shardId: number;
|
|
} | {
|
|
nonce: number;
|
|
op: WorkerReceivePayloadOp.CancelIdentify;
|
|
} | {
|
|
nonce: number;
|
|
op: WorkerReceivePayloadOp.FetchStatusResponse;
|
|
status: WebSocketShardStatus;
|
|
} | {
|
|
nonce: number;
|
|
op: WorkerReceivePayloadOp.RetrieveSessionInfo;
|
|
shardId: number;
|
|
} | {
|
|
nonce: number;
|
|
op: WorkerReceivePayloadOp.WaitForIdentify;
|
|
shardId: number;
|
|
} | {
|
|
op: WorkerReceivePayloadOp.Connected;
|
|
shardId: number;
|
|
} | {
|
|
op: WorkerReceivePayloadOp.Destroyed;
|
|
shardId: number;
|
|
} | {
|
|
op: WorkerReceivePayloadOp.UpdateSessionInfo;
|
|
session: SessionInfo | null;
|
|
shardId: number;
|
|
} | {
|
|
op: WorkerReceivePayloadOp.WorkerReady;
|
|
};
|
|
/**
|
|
* Options for a {@link WorkerShardingStrategy}
|
|
*/
|
|
interface WorkerShardingStrategyOptions {
|
|
/**
|
|
* Dictates how many shards should be spawned per worker thread.
|
|
*/
|
|
shardsPerWorker: number | 'all';
|
|
/**
|
|
* Handles a payload not recognized by the handler.
|
|
*/
|
|
unknownPayloadHandler?(payload: any): unknown;
|
|
/**
|
|
* Path to the worker file to use. The worker requires quite a bit of setup, it is recommended you leverage the {@link WorkerBootstrapper} class.
|
|
*/
|
|
workerPath?: string;
|
|
}
|
|
/**
|
|
* Strategy used to spawn threads in worker_threads
|
|
*/
|
|
declare class WorkerShardingStrategy implements IShardingStrategy {
|
|
#private;
|
|
private readonly manager;
|
|
private readonly options;
|
|
private readonly connectPromises;
|
|
private readonly destroyPromises;
|
|
private readonly fetchStatusPromises;
|
|
private readonly waitForIdentifyControllers;
|
|
private throttler?;
|
|
constructor(manager: WebSocketManager, options: WorkerShardingStrategyOptions);
|
|
/**
|
|
* {@inheritDoc IShardingStrategy.spawn}
|
|
*/
|
|
spawn(shardIds: number[]): Promise<void>;
|
|
/**
|
|
* {@inheritDoc IShardingStrategy.connect}
|
|
*/
|
|
connect(): Promise<void>;
|
|
/**
|
|
* {@inheritDoc IShardingStrategy.destroy}
|
|
*/
|
|
destroy(options?: Omit<WebSocketShardDestroyOptions, 'recover'>): Promise<void>;
|
|
/**
|
|
* {@inheritDoc IShardingStrategy.send}
|
|
*/
|
|
send(shardId: number, data: GatewaySendPayload): void;
|
|
/**
|
|
* {@inheritDoc IShardingStrategy.fetchStatus}
|
|
*/
|
|
fetchStatus(): Promise<Collection<number, WebSocketShardStatus>>;
|
|
private setupWorker;
|
|
private resolveWorkerPath;
|
|
private waitForWorkerReady;
|
|
private onMessage;
|
|
private ensureThrottler;
|
|
}
|
|
|
|
/**
|
|
* Options for bootstrapping the worker
|
|
*/
|
|
interface BootstrapOptions {
|
|
/**
|
|
* Shard events to just arbitrarily forward to the parent thread for the manager to emit
|
|
* Note: By default, this will include ALL events
|
|
* you most likely want to handle dispatch within the worker itself
|
|
*/
|
|
forwardEvents?: WebSocketShardEvents[];
|
|
/**
|
|
* Function to call when a shard is created for additional setup
|
|
*/
|
|
shardCallback?(shard: WebSocketShard): Awaitable<void>;
|
|
}
|
|
/**
|
|
* Utility class for bootstrapping a worker thread to be used for sharding
|
|
*/
|
|
declare class WorkerBootstrapper {
|
|
/**
|
|
* The data passed to the worker thread
|
|
*/
|
|
protected readonly data: WorkerData;
|
|
/**
|
|
* The shards that are managed by this worker
|
|
*/
|
|
protected readonly shards: Collection<number, WebSocketShard>;
|
|
constructor();
|
|
/**
|
|
* Helper method to initiate a shard's connection process
|
|
*/
|
|
protected connect(shardId: number): Promise<void>;
|
|
/**
|
|
* Helper method to destroy a shard
|
|
*/
|
|
protected destroy(shardId: number, options?: WebSocketShardDestroyOptions): Promise<void>;
|
|
/**
|
|
* Helper method to attach event listeners to the parentPort
|
|
*/
|
|
protected setupThreadEvents(): void;
|
|
/**
|
|
* Bootstraps the worker thread with the provided options
|
|
*/
|
|
bootstrap(options?: Readonly<BootstrapOptions>): Promise<void>;
|
|
}
|
|
|
|
/**
|
|
* The {@link https://github.com/discordjs/discord.js/blob/main/packages/ws#readme | @discordjs/ws} version
|
|
* that you are currently using.
|
|
*/
|
|
declare const version: string;
|
|
|
|
export { type BootstrapOptions, CloseCodes, CompressionMethod, type CreateWebSocketManagerOptions, DefaultDeviceProperty, DefaultWebSocketManagerOptions, Encoding, type FetchingStrategyOptions, type IContextFetchingStrategy, type IIdentifyThrottler, type IShardingStrategy, type IdentifyState, ImportantGatewayOpcodes, type ManagerShardEventsMap, type OptionalWebSocketManagerOptions, type RequiredWebSocketManagerOptions, type SendRateLimitState, type SessionInfo, type ShardRange, SimpleContextFetchingStrategy, SimpleIdentifyThrottler, SimpleShardingStrategy, WebSocketManager, type WebSocketManagerOptions, WebSocketShard, type WebSocketShardDestroyOptions, WebSocketShardDestroyRecovery, WebSocketShardEvents, type WebSocketShardEventsMap, WebSocketShardStatus, WorkerBootstrapper, WorkerContextFetchingStrategy, type WorkerData, type WorkerReceivePayload, WorkerReceivePayloadOp, type WorkerSendPayload, WorkerSendPayloadOp, WorkerShardingStrategy, type WorkerShardingStrategyOptions, getInitialSendRateLimitState, managerToFetchingStrategyOptions, version };
|