To cite package ‘diffviewer’ in publications use:

  Wickham H, Kunst J, Chang W (2024). _diffviewer: HTML Widget to Show
  File Differences_. R package version 0.1.2.9000, ,
  <https://github.com/r-lib/diffviewer>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {diffviewer: HTML Widget to Show File Differences},
    author = {Hadley Wickham and Joshua Kunst and Winston Chang},
    year = {2024},
    note = {R package version 0.1.2.9000, },
    url = {https://github.com/r-lib/diffviewer},
  }