function readFrameDeprecatedDeprecateduse Deno.upgradeWebSocket Read websocket frame from given BufReader import { readFrame } from "https://deno.land/std@0.115.1/ws/mod.ts"; Deprecateduse Deno.upgradeWebSocket Read websocket frame from given BufReader readFrame(buf: BufReader): Promise<WebSocketFrame>Parametersbuf: BufReaderReturnsPromise<WebSocketFrame>