I looked at a few surveys and nearly 50% of the developers are using Windows. I doubt that this can change so much for JavaScript.
Yeah, my data is anecdata - I only know one country and mostly small shops. But unless something drastically changed the last years where I was in startup land - many web developers tended to prefer Linux or Macs, whether they're using Rails, Python, or PHP. In general the bigger or more agency-like the company, the higher the percentage of Windows for developers.
I actually only know web developers using Macs to edit their TS, maybe a rare case of Linux, zero other MS things used, except maybe VS Code. And maybe it's debatable if VS Code is the best TS editor, I also have no numbers about widespread use, but I doubt it's a majority.