keyboard_map library Null safety

Keyboard Map

https://wicg.github.io/keyboard-map/

Classes

Keyboard
Experimental This is an experimental technologyCheck the Browser compatibility table carefully before using this in production. The interface of the Keyboard API provides functions that retrieve keyboard layout maps and toggle capturing of key presses from the physical keyboard. [...]
KeyboardLayoutMap
Experimental This is an experimental technologyCheck the Browser compatibility table carefully before using this in production. The interface of the Keyboard API is a map-like object with functions for retrieving the string associated with specific physical keys. A list of valid keys is found in the UI Events KeyboardEvent code Values specification.