Reference

All functions
badge()	Embed a lifecycle badge in documentation
deprecate_soft() deprecate_warn() deprecate_stop()	Deprecate functions and arguments
deprecated() is_present()	Mark an argument as deprecated
expect_deprecated() expect_defunct()	Does expression produce lifecycle warnings or errors?
last_warnings() last_warning()	Display last deprecation warnings
pkg_lifecycle_statuses() lint_lifecycle() lint_tidyverse_lifecycle()	Lint usages of functions that have a non-stable life cycle.
signal_stage()	Signal other experimental or superseded features
verbosity	Control the verbosity of deprecation signals