R: display mode for single-file shiny app

Question

When using two files (ui.R and server.R), one can change display mode with:

runApp("MyApp", display.mode = "showcase")

How can I set display mode to "showcase" for single-file shiny app?

Thx!

Answer 1

Display mode can be changed using DESCRIPTION file.

Details answered in this question: showcase display mode for published app in shinyapps.io