All data sets required for the examples and exercises in the book "Forecasting: principles and practice" (2nd ed, 2017) by Rob J Hyndman and George Athanasopoulos. This package also loads other packages required for the book.
Hyndman, R.J., and Athanasopoulos, G. (2017). Forecasting: principles and practice, OTexts: Melbourne, Australia. https://OTexts.org/fpp2/
forecast
package