That's right. Once you've got the equivalent commands for each platform, it should be possible to build and package for all of them (Mac/Win/Linux). I've just

That's right. Once you've got the equivalent commands for each platform, it should be possible to build and package for all of them (Mac/Win/Linux). I've just done a tri-platform Electron app which handles quite a few platform-specific commands. (For drive listing, SD-card formatting, file decryption (in custom C apps), etc.) It does take a lot more work (and lots of time-consuming testing). But it can be done.