Function cardinalityForRange

cardinalityForRange(
    start: Cardinality,
    end: Cardinality,
    locale: string,
): Cardinality
Classify a range from its start and end cardinalities under the requested locale. For example, for English "1–2 books", pass CARDINALITY_ONE and CARDINALITY_OTHER.

If the locale has cardinal rules but no CLDR range rule for this pair, the result is the end cardinality. A locale with no cardinal rules throws.
Parameters
- start: Cardinality
  the cardinality of the range's start value
- end: Cardinality
  the cardinality of the range's end value
- locale: string
  a BCP 47 locale tag. Malformed tags resolve to the undetermined locale; a non-string argument is rejected.
Returns Cardinality
one of the root's frozen CARDINALITY_* constants

Throws
if an endpoint is not a CARDINALITY_* value, or the locale is not a string

Throws
if the locale has no CLDR cardinal rules