Manjaro Sway HDMI

I have a Manjaro laptop with Sway preinstalled. I need to have the image transmitted via HDMI to an external monitor - in other words, what I see on the laptop screen should be displayed on the external monitor via HDMI. How can I achieve this?

Preinstalled you say, but i wonder … Anyhow, you should check the sway-output(5) — Arch manual pages and get familiar with how Sway’s configs work.

You could try the package wdisplays from the AUR if it fits your needs.