Initially it was fun, although MermaidJS lacked support for the diagram types I used at that time.
What stooped to be fun, is that MermaidJS needs a whole Chromebrowser engine to render the diagrams and it is built on Node.js.
Trying to generate my diagrams in another environment again was a total PITA and not worth the time.
I would love if the MermaidJS devs would port everything to another tech stack, don't use a whole browser engine to render their diagrams and make diagram creation easy and reproducible for build piplelines.