For a company that had a giant 30 minute wizard in the web interface, I wrote a wizard engine in VueJS that works similarly. It's served hundreds of thousands of users since 2019 and went through medical device certification :) Took me quite some time to realize we can use `await` to wait for user input too, not just APIs etc.

I recently re-created parts of it from memory for a hobby project and just now open-sourced it: https://github.com/jtwaleson/wizard-engine

The neat thing is that we can program the complex logic of the wizard with the full power of the programming language. By making each screen in the wizard a function that has input parameters and a return value, we can treat it like any other function. Show the same screen 3x in a row? Use a for loop. Show a screen with input that depends on the output of the previous step? Just use a variable to store the results.