You might assume this pattern is inherent to streaming. It isn't. The reader acquisition, the lock management, and the { value, done } protocol are all just design choices, not requirements. They are artifacts of how and when the Web streams spec was written. Async iteration exists precisely to handle sequences that arrive over time, but async iteration did not yet exist when the streams specification was written. The complexity here is pure API overhead, not fundamental necessity.
主屏幕编辑菜单的液态玻璃透明度进一步提升，玻璃质感更明显，但在部分背景下会导致文字与图标的对比度下降，导致可读性变差；深色模式下的控制中心弹窗背景也同步变得更暗。
。WPS官方版本下载对此有专业解读
By When Saturday Comes
Web streams has no synchronous path. Even if your source has data ready and your transform is a pure function, you still pay for promise creation and microtask scheduling on every operation. Promises are fantastic for cases in which waiting is actually necessary, but they aren't always necessary. The new API lets you stay in sync-land when that's what you need.
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