It is an extension of futile.logger package.
see files in:
./R/fun_log.R ./inst/example-logging/*
./inst/example-logging/example-logging-rmd.Rmd is an example of Rmd that uses the logging functions
install.packages("devtools")
devtools::install_github("akirocode/aktools")
library(aktools)
or install a specific immutable version (specific tag)
install.packages("devtools")
devtools::install_github("akirocode/aktools@0.8.0")
library(aktools)