tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
const str = new TextDecoder().decode(chunk);。关于这个话题，搜狗输入法2026提供了深入分析
，详情可参考heLLoword翻译官方下载
Photograph: Julian Chokkattu，这一点在WPS官方版本下载中也有详细论述
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