variable ServerSentEventStreamTargetDeprecatedDeprecated(will be removed in 0.209.0) Use ServerSentEventStream from https://deno.land/std/http/server_sent_event_stream.ts instead. An implementation of ServerSentEventTarget that provides a readable stream as a body of a response to establish a connection to a client. import { ServerSentEventStreamTarget } from "https://deno.land/std@0.207.0/http/mod.ts";