What TransformStreams are supposed to do is check for backpressure on the controller and use promises to communicate that back to the writer:
最后是 Thumbs.db 文件。Thumbs（缩写自 thumbnails）即缩略图数据库，这是一种 Windows 系统文件，采用 OLE 复合文档结构。它用于储存文件夹中图像和视频的缩略图预览缓存，以加速 Windows 资源管理器对缩略图的加载。。heLLoword翻译官方下载对此有专业解读
。safew官方下载对此有专业解读
Tiny Footprint: Our HH-Routing data adds only 0.5% to 1% to OsmAnd's already incredibly compact map sizes. The entire planet's car routing data is around 800MB!
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