Advice building electron package.

Hi everyone. I want to add to my ports the balena-etcher application, well I added via deb package, but I want to build it froms source, for that I'm following the AUR package for guide. The problem is that I'm running in a lot of error, building as root or as normal user with fakeroot. Anyone can guide me if it's possible to build the package from source or is better to stick with the .deb package? Thanks to all.