Interval data as a caller may write it, with the direction optional.
Deliberately wider than SpelledInterval: a caller hands in what they
have, including data written before the direction travelled with it, and
toSpelledInterval decides what is missing. Narrowing the input to the
resolved shape would refuse the very data the resolver exists to repair.
Type Declaration
Optionaldescending?: boolean
Whether the letters move down; read from the span and quality when absent.
Interval data as a caller may write it, with the direction optional.
Deliberately wider than SpelledInterval: a caller hands in what they have, including data written before the direction travelled with it, and toSpelledInterval decides what is missing. Narrowing the input to the resolved shape would refuse the very data the resolver exists to repair.