ReadableStream tee 多路分发与并行处理实践

概述`tee` 可以将一个可读流分为两支，适合一边存储一边校验或显示的场景。能力检测与多路分发const supportsStreams = typeof ReadableStream === 'function';

async function splitAndProcess(rs) {

if (!supportsStreams) throw new Error('streams unsupported');

const [a, b] = rs.tee();

const text = await new Response(a).text();

const bytes = new Uint8Array(await new Response(b).arrayBuffer());

return { text, bytes };

}