Mockintosh is a mock operating system in classic Macintosh OS style.
The code is open source but all credit for the design language and most icons belong to Susan Kare, the designer of the original Macintosh GUI.
It is built with React and instructions on how to set up the development environment are in CONTRIBUTING.md.
esc-pos-encoder needs some support canvas libraries to be able to be installed (ref: https://github.com/NielsLeenheer/EscPosEncoder/issues/73)
add those with
brew install pkg-config cairo pango libpng jpeg giflib librsvg