To cite package ‘fastgeojson’ in publications use:

  Jorion A (2026). _fastgeojson: High-Performance 'GeoJSON' and 'JSON'
  Serialization for R_. R package version 0.2.2,
  <https://github.com/firstzeroenergy/fastgeojson>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fastgeojson: High-Performance 'GeoJSON' and 'JSON' Serialization for R},
    author = {Alex Jorion},
    year = {2026},
    note = {R package version 0.2.2},
    url = {https://github.com/firstzeroenergy/fastgeojson},
  }