W3C keyname

Tiny library that exports a function keyName that takes a keyboard event and
returns a
KeyboardEvent.key-style
string. Will use the actual key property of the event if available,
and fall back to a value synthesized from the keyCode otherwise.

Probably often wrong on non-US keyboards, since the correspondence
between a key code and the character it produces when shift is held is
predicted based on a hard-coded table. Meant as a fallback for
KeyboardEvent.key, not a replacement.

The lookup tables from key codes (event.keyCode) to names are
exported as base (when Shift isn't held) and shift (when Shift is
held).

License: MIT