The R package fabletools provides tools for building modelling packages, with a focus on time series forecasting. This package allows package developers to extend fable with additional models, without needing to depend on the models supported by fable.
You could install the stable version on CRAN:
install.packages("fabletools")You can install the development version from GitHub:
# install.packages("remotes")
remotes::install_github("tidyverts/fabletools")