To cite package ‘watcher’ in publications use:

  Gao C (2025). _watcher: Watch the File System for Changes_. R package
  version 0.1.1.9000, , <https://github.com/r-lib/watcher>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {watcher: Watch the File System for Changes},
    author = {Charlie Gao},
    year = {2025},
    note = {R package version 0.1.1.9000, },
    url = {https://github.com/r-lib/watcher},
  }