Slow performance for alias lookup

In Visual Studio Code, the ctrl + F5 keyboard shortcuts translates PowerShell command aliases. The performance of this leaves a lot to be desired, and sometimes results in a confusing end user experience when you're rapidly moving the cursor around the editor.

Can we improve performance of this function, to make it more usable? If necessary, we could cache a lookup table, and either invalidate it on-demand, or periodically update it with a background worker.

Cheers,
Trevor Sullivan
https://trevorsullivan.net
https://twitter.com/pcgeek86

該 issue 指出了由 Visual Studio Code 的 ctrl+F5 快捷鍵觸發的 PowerShell 別名查找，但沒有指出任何檔案、測試或進入點。先追蹤這次查找，並建立一個可重現的快速游標移動效能案例；完成的標準是：在沒有所描述的令人困惑行為的情況下，該查找的可用性有可測量的提升。