Node.js already had its own streaming API at the time that was ported to also work in browsers, but WHATWG chose not to use it as a starting point given that it is chartered to only consider the needs of Web browsers. Server-side runtimes only adopted Web streams later, after Cloudflare Workers and Deno each emerged with first-class Web streams support and cross-runtime compatibility became a priority.
server_port = 7000
，更多细节参见safew官方下载
12月20日，“京津冀协同发展背景下的养老协同模式创新”圆桌论坛。
const curTime = posToTime.get(pos);