I was fortunate to assist Joe and Dean as a TA in the intermediate Shiny workshop at rstudio::conf. One of the exercises in the workshop was to convert HTML markup to HTML tag functions (R code).
Since the conversion process is entirely mechanical I thought to create a Shiny app to perform the conversion automatically. The result was this little application: https://alandipert.shinyapps.io/html2r/
I hope folks find this useful! If you have ideas to improve it or bug fixes, don't hesitate to create issues over at https://github.com/alandipert/html2r.