shaggy (mosaic-dev box)andClaude Haiku 4.5
caebf9ef70
Co-Authored-By: Claude Haiku 4.5 <[email protected]>
37 lines
1.3 KiB
TypeScript
37 lines
1.3 KiB
TypeScript
import { io } from 'socket.io-client';
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import type { ChatSocket } from './chat-contract';
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let socket: ChatSocket | null = null;
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export function getSocket(): ChatSocket {
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if (!socket) {
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// socket.io-client 4.8.3's `io()` factory declaration always returns the
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// default unparameterized Socket (it accepts no <ListenEvents, EmitEvents>
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// generics), so this one cast is the unavoidable boundary between that and the
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// typed `/chat` contract. Every other call site uses the resulting ChatSocket
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// with no further assertions.
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socket = io('/chat', {
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withCredentials: true,
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autoConnect: false,
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transports: ['websocket', 'polling'],
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}) as unknown as ChatSocket;
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// A transient `disconnect` (network blip, server restart) must NOT null
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// the singleton: socket.io-client auto-reconnects this same instance,
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// and its listeners stay registered across that reconnect. Nulling here
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// previously orphaned those listeners on the next getSocket() call by
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// handing back a brand-new, unconnected instance. Only destroySocket()
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// (an explicit, intentional teardown) may reset the singleton.
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}
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return socket;
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}
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/** Tear down the singleton socket and reset the reference. */
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export function destroySocket(): void {
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if (socket) {
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socket.offAny();
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socket.disconnect();
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socket = null;
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}
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}
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