To cite package ‘jsonStrings’ in publications use:

  Laurent S (2022). _jsonStrings: Manipulation of JSON Strings_. R
  package version 2.1.1, <https://github.com/stla/jsonstrings>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {jsonStrings: Manipulation of JSON Strings},
    author = {Stéphane Laurent},
    year = {2022},
    note = {R package version 2.1.1},
    url = {https://github.com/stla/jsonstrings},
  }