To achieve usable performance, every major runtime has resorted to non-standard internal optimizations for Web streams. Node.js, Deno, Bun, and Cloudflare Workers have all developed their own workarounds. This is particularly true for streams wired up to system-level I/O, where much of the machinery is non-observable and can be short-circuited.
It’s based on ComposeFS, whose primary focus is ensuring data integrity. It relies on EROFS (Enhanced Read-Only File System) to guarantee that data won’t be corrupted and to store file metadata. It natively performs data deduplication and LZ4 compression.。关于这个话题，谷歌浏览器【最新下载地址】提供了深入分析
union alloc_header{，这一点在Line官方版本下载中也有详细论述
Per-digit arithmetic — computing sum and carry for each pair