function getSharedGroupCapacities getSharedGroupCapacities(listings: ListingForGroupLookup[]): Promise<{ remaining: RemainingMap; staticCap: RemainingMap; membership: Map<number, number[]>; }> Group remaining, static caps, and membership for date-less package checks. Parameters listings: ListingForGroupLookup[] Return Type Promise<{ remaining: RemainingMap; staticCap: RemainingMap; membership: Map<number, number[]>; }>