import { win_getid } from "https://deno.land/x/denops_std@v6.4.0/function/mod.ts";
Get the window-ID for the specified window.
When {win} is missing use the current window.
With {win} this is the window number. The top window has
number 1.
Without {tab} use the current tab, otherwise the tab with
number {tab}. The first tab has number one.
Return zero if the window cannot be found.
Can also be used as a method:
GetWinnr()->win_getid()