diffr

The goal of diffr is an R package for creating code differences in JavaScript based on:

https://github.com/danvk/codediff.js

library(diffr)
file1= tempfile()
writeLines("hello, world!\n", con=file1)
file2= tempfile()
writeLines(paste0(
"hello world?\nI don't get it\n",
paste0(sample(letters, 65, replace=TRUE), collapse="")), con=file2)

diffr(file1, file2, before="f1", after="f2")