This package provides functions to help build R packages compiled for WebAssembly (Wasm), manage Wasm binary R package libraries and repositories, and prepare webR compatible filesystem images for static web hosting of data files and R packages.
Building binary R packages for Wasm requires cross-compiling packages containing C/C++/Fortran source code using a Wasm development toolchain. As such, the Emscripten C/C++ toolchain and a version of LLVM flang configured to output Wasm must be available in the environment for the rwasm package to function.
For convenience, webR GitHub repository provides a Docker container containing the full Wasm development environment required for building Wasm R packages.
The rwasm package is not yet on CRAN. You can install the development version from GitHub via:
# install.packages("pak")
pak::pak("r-wasm/rwasm")Further information explaining how to set up the Wasm development environment and build R packages can be found in vignette("rwasm").