An object with arbitrary string-indexed values of an optional generic type Optional<T>. T defaults to unknown
when not explicitly supplied. For convenient iteration of definitely assigned (i.e. non-nullable) entries, keys,
and values, see the following functions: definiteEntriesOf, definiteKeysOf, and
definiteValuesOf.
An object with arbitrary string-indexed values of an optional generic type
Optional<T>.Tdefaults tounknownwhen not explicitly supplied. For convenient iteration of definitely assigned (i.e. non-nullable) entries, keys, and values, see the following functions: definiteEntriesOf, definiteKeysOf, and definiteValuesOf.