Print message for deprecated functions in Shiny

Source: R/utils.R

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

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.