ReadableStream BYOBReader 二进制读取与背压协作实践

概述BYOBReader 允许复用调用方缓冲区，降低分配开销。本文提供最小读取与处理示例。能力检测与 BYOB 读取const supportsRS = typeof ReadableStream === 'function'; async function readBinary(stream, size = 64 * 1024) { if (!supportsRS) throw new Error('streams unsupported'); const reader = stream.getReader({ mode: 'byob' }); const buf = new Uint8Array(size); const chunks = []; while (true) { const { value, done } = await reader.read(buf); if (done) break; chunks.push(value.slice()); } return chunks; }