ccc-obfuscated-code/node_modules/chance/docs/basics/letter.md

letter

// usage
chance.letter()
chance.letter({ casing: 'lower' })

Return a random letter.

chance.letter();
=> 'p'

By default it will return a random lowercase letter.

Note, wanted to call this option just case instead of casing but unfortunately that's a reserved word in JavaScript for use in a switch statement

It's possible to specify upper case

chance.letter({casing: 'upper'});
=> 'A'