I have been experimenting with React in R. Here is a quick illustration of making a htmlwidget out of react-json.
# requires dev version of listviewer
# devtools::install_github("timelyportfolio/listviewer@feature/react-json")
library(listviewer)
# use reactR for React dependencies
# devtools::install_github("timelyportfolio/reactR")
library(reactR)