类:TransformStream

\Class: TransformStream

TransformStream 由 <ReadableStream> 和 <WritableStream> 组成,它们相互连接,以便在将写入 WritableStream 的数据推送到 ReadableStream 的队列之前接收并可能进行转换。

\A TransformStream consists of a <ReadableStream> and a <WritableStream> that are connected such that the data written to the WritableStream is received, and potentially transformed, before being pushed into the ReadableStream's queue.

import {
 TransformStream,
} from 'node:stream/web';
const transform = new TransformStream({
 transform(chunk, controller) {
 controller.enqueue(chunk.toUpperCase());
 },
});
await Promise.all([
 transform.writable.getWriter().write('A'),
 transform.readable.getReader().read(),
]); 拷贝