Drawio desktop now ships with a command line mode that provides the complete functionality of dawio-batch. I will not continue to develop on this piece of software.
A command line converter for draw.io documents. Converts diagrams to common image formats by wrapping the existing online conversion code into an offline tool.
Starting with version 8.5.3, drawio-batch has been rewritten as a JavaScript application based on puppeteer instead of the unmaintained phantomjs.
Thus, packaging has changed and phantomjs is not required anymore.
npm -g install
This will install a drawio-batch script.
There is also an Archlinux AUR package for this project.