debugShowTextField property
Must be false for production.
Debug aid: when true, the underlying TextField is rendered as a
normal, visible textfield below the digit boxes (instead of being
hidden behind them via the FittedBox/Stack hack), so a developer can
see exactly what the textfield holds and how the input formatters
behave. Defaults to false, which is the production layout — taps
fall through the digit boxes onto the hidden textfield behind them.
Implementation
final bool debugShowTextField;