To cite package ‘zap’ in publications use:

  Cheng M (2026). _zap: Fast Object Serialization with High
  Compression_. R package version 0.1.1.9002,
  <https://github.com/coolbutuseless/zap>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {zap: Fast Object Serialization with High Compression},
    author = {Mike Cheng},
    year = {2026},
    note = {R package version 0.1.1.9002},
    url = {https://github.com/coolbutuseless/zap},
  }