promptdiff
// compare prompt versions. track iterations.
installation
npm install -g promptdiffusage
# compare two prompt files
promptdiff v1.txt v2.txt
# show word-level diff
promptdiff v1.txt v2.txt --word
# output as JSON
promptdiff v1.txt v2.txt --json
# show token count diff
promptdiff v1.txt v2.txt --tokens