https://blogs.windows.com/windowsexperience/2026/02/26/announcing-new-cloud-pc-devices-designed-for-windows-365/
需要元素值：栈存值，或答案存索引后用 nums[res[i]] 取值。，这一点在91视频中也有详细论述
because I can simply do this:。heLLoword翻译官方下载对此有专业解读
For implementers, this promise-heavy design constrains optimization opportunities. The spec mandates specific promise resolution ordering, making it difficult to batch operations or skip unnecessary async boundaries without risking subtle compliance failures. There are many hidden internal optimizations that implementers do make but these can be complicated and difficult to get right.