'FaaSr' Local Test Development Package R package FaaSr version 2.0.0 Provides a local execution environment for testing and developing the 'FaaSr' workflows without requiring cloud infrastructure. The 'FaaSr' package enables R developers to validate and test workflows locally before deploying to Function-as-a-Service (FaaS) platforms. Key features include: 1) Parsing and validating JSON workflow configurations compliant with the 'FaaSr' schema 2) Simulated S3 storage operations using local file system with local logging 3) Support for conditional branching 4) Support for parallel rank functions execution 5) Workflow cycle detection and validation 6) No cloud credentials or infrastructure required for testing This package is designed for development and testing purposes. For production deployment to cloud FaaS platforms, use the main 'FaaSr' package available at <https://faasr.io/>. Software Depends: R (>= 3.5.0) Imports: jsonlite, cli, jsonvalidate, uuid Suggests: testthat, knitr, rmarkdown Figueiredo Renato <renato.figueiredo@oregonstate.edu> Comprehensive R Archive Network (CRAN) Figueiredo Renato [aut, cre, ths, cph] (ORCID: <https://orcid.org/0000-0001-9841-6060>), Park Sungjae [aut] (ORCID: <https://orcid.org/0009-0000-5357-804X>), Mu Nan [ctb], Ku Yun-Jung [ctb], Daneshmand Vahid [ctb], Thomas R. Quinn [aut], Carey Cayelan [ctb], Tran Hoang [aut], Ramrakhiani Ashish Tulso [aut] MIT + file LICENSE (https://CRAN.R-project.org/package=FaaSr/LICENSE) 2026-03-19 application/tgz https://CRAN.R-project.org/package=FaaSr doi:10.32614/CRAN.package.FaaSr en-US