rw: Evaluate R Expressions withing R WebAssembly

TL;DR

The rw R package allows you to evaluate R code within R WebAssembly as implemented by webR, e.g.

> rw::rw_do_call(Sys.info)
       sysname        release        version       nodename        machine 
  "Emscripten"        "4.0.8"           "#1"   "emscripten"       "wasm32" 
         login           user effective_user 
    "web_user"      "unknown"      "unknown" 

This can be useful when we need to evaluate arbitrary, untrusted R code in a secure manner isolated from the host system. It is also useful for making sure R code and R packages work in webR without having to go the extra mile to upload packages online and then testing it in the web browser at https://webr.sh/.

Installation

remotes::install_github("futureverse/rw", subdir = "r")

The package requires the rw command-line tool, which can be installed as:

npm install -g @henrikbengtsson/rw