Print message for deprecated functions in Shiny — shinyDeprecated

shinyDeprecated(new = NULL, msg = NULL,
  old = as.character(sys.call(sys.parent()))[1L], version = NULL)

Arguments

new	Name of replacement function.
msg	Message to print. If used, this will override the default message.
old	Name of deprecated function.
version	The last version of Shiny before the item was deprecated.

Description

To disable these messages, use options(shiny.deprecation.messages=FALSE).