add(item: HeartoItem): void this.items.set(item.id, item);
get(id: string): HeartoItem
// Example usage const hearto_1g1r_collection = new HeartoCollection(); hearto_1g1r_collection.add( id: "1", name: "Heart A" ); console.log(hearto_1g1r_collection.listAll()); hearto_1g1r_collection
interface HeartoItem id: string; name: string; type?: string; add(item: HeartoItem): void this