function isWebSocketPongEventDeprecatedDeprecateduse Deno.upgradeWebSocket Returns true if input value is a WebSocketPongEvent, false otherwise. import { isWebSocketPongEvent } from "https://dotland.deno.dev/std@0.110.0/ws/mod.ts"; isWebSocketPongEvent(a: WebSocketEvent): a is WebSocketPongEventParametersa: WebSocketEventReturnsa is WebSocketPongEvent