performanceResourceTiming.responseEnd
高精度毫秒时间戳,表示在 Node.js 接收到资源的最后一个字节后或在传输连接关闭前(以先发生者为准)的时间。
🌐 The high resolution millisecond timestamp representing the time immediately after Node.js receives the last byte of the resource or immediately before the transport connection is closed, whichever comes first.