Deprecated functions under the control of the developer now warn repeatedly in unit tests.
Deprecation warnings now record a backtrace. Call lifecycle::last_warnings() and lifecycle::last_warning() to print the warnings that occurred during the last command, along with their backtraces.
The naming scheme of signaller functions has been simplified:
signal_soft_deprecated() is now deprecate_soft().warn_deprecated() is now deprecate_warn().stop_defunct() is now deprecate_stop().The signaller functions now take a version and two descriptors for the deprecated feature and its replacement (the latter is optional). The deprecation message is built from these components. You can pass a details argument to append additional information to the generated deprecation message.
Helpers from rlang’s compat-lifecycle.R drop-in file are now exported in this package.