使用 postMessage() 传输

¥Transferring with postMessage()

可以使用 <MessagePort> 传输 <WritableStream> 实例。

¥A <WritableStream> instance can be transferred using a <MessagePort>.

const stream = new WritableStream(getWritableSinkSomehow());

const { port1, port2 } = new MessageChannel();

port1.onmessage = ({ data }) => {
  data.getWriter().write('hello');
};

port2.postMessage(stream, [stream]); 拷贝